Hiall, My System is SUSE 9.1. It all started with some hickups with burning DVDs in K3b then after a restart K3b suddenly could not detect any media anymore. I also noticed that I could not read anything from any of my drives (one DVD one DVD-Recorder). listing /media/dvd with an inserted CD. Normally it automounts the CD and seconds later it is available under /media/dvd/ and /media/dvdrecorder/ respectively. I have no idea how to bring them back. Yast still finds the drives, and thinks they are setup correctly: Name Device Link Mount Point DVD-ROM DDU1621 /dev/hda /dev/dvd /media/dvd _NEC DVD_RW ND-2500A /dev/hdb /dev/dvdrecorder /media/dvdrecorder Also, here's the relevant fstab entrys (that look quite normal): /dev/dvd /media/dvd subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/dvdrecorder /media/dvdrecorder subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/fd0 /media/floppy subfs fs=floppyfss,procuid,nodev,nosuid,sync 0 0 /dev/cdrom /media/cdrom subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 and finally the links in the /dev directory: kongeo@linux:~> ll /dev/cdrom lrwxrwxrwx 1 root root 3 2005-01-14 07:34 /dev/cdrom -> hda kongeo@linux:~> ll /dev/dvd* lrwxrwxrwx 1 root root 3 2005-01-14 07:34 /dev/dvd -> hda lrwxrwxrwx 1 root root 3 2005-01-14 07:34 /dev/dvdrecorder -> hdb during boot it looks like: <4>hda: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive <4>hdb: _NEC DVD_RW ND-2500A, ATAPI CD/DVD-ROM drive <4>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 <4>hdc: WDC WD800JB-00FMA0, ATA DISK drive <4>hdd: WDC WD800JB-00FMA0, ATA DISK drive <4>ide1 at 0x170-0x177,0x376 on irq 15 [....] <4>hda: ATAPI 40X DVD-ROM drive, 512kB Cache <6>Uniform CD-ROM driver Revision: 3.20 <4>hdb: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache I have no idea where else to look. Can anybody help me? Kostas
On Fri, Jan 14, 2005 at 11:21:07AM +0200, Konstantinos Georgokitsos wrote:
I have no idea where else to look. Can anybody help me?
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner. -- David Smith Work Email: Dave.Smith@st.com STMicroelectronics Home Email: David.Smith@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2
On Friday 14 January 2005 11:47, David SMITH wrote:
On Fri, Jan 14, 2005 at 11:21:07AM +0200, Konstantinos Georgokitsos wrote:
I have no idea where else to look. Can anybody help me?
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time? Well, on second thought it's certainly possible. We had a power shortage a few days ago, who knows. I'd have to open the box and try the drives on another machine. Kostas
On Fri, Jan 14, 2005 at 12:42:38PM +0200, Konstantinos Georgokitsos wrote:
On Friday 14 January 2005 11:47, David SMITH wrote:
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time?
I didn't realise you'd had two fail at the same time, but it's always worth eliminating the possibility rather than spending ages chasing around looking for software problems.
I'd have to open the box and try the drives on another machine.
Try booting some kind of "live-cd distribution" (e.g. Knoppix, Mepis, SuSE Eval) rather than hacking the hardware; it could save you some effort. Oh, I forgot, you haven't got a CD-writer :-/ -- David Smith Work Email: Dave.Smith@st.com STMicroelectronics Home Email: David.Smith@ds-electronics.co.uk Bristol, England GPG Key: 0xF13192F2
On Friday 14 January 2005 13:18, David SMITH wrote:
Try booting some kind of "live-cd distribution" (e.g. Knoppix, Mepis, SuSE Eval) rather than hacking the hardware; it could save you some effort.
Good idea! Should've thought of it myself... I have one around from a magazine
Oh, I forgot, you haven't got a CD-writer :-/
I'm in the office, there are plenty :-) Kostas
On Friday 14 January 2005 13:26, Konstantinos Georgokitsos wrote:
On Friday 14 January 2005 13:18, David SMITH wrote:
Try booting some kind of "live-cd distribution" (e.g. Knoppix, Mepis, SuSE Eval) rather than hacking the hardware; it could save you some effort.
Good idea! Should've thought of it myself... I have one around from a magazine
Oh, I forgot, you haven't got a CD-writer :-/
I'm in the office, there are plenty :-)
Thanks for all the suggestion! Ok, now I've done it. Knoppix can see the drives just fine and anything that is in it. I did not try to burn anything on my DVD-Recorder, but this seems not to be the main problem as I can not list the contents of anything that I insert. So the drives do work ok. And as I said in an earlier post during SUSE bootup (I've done that sever times now) they look fine. To Carlos E. R.: I have two HDs on one controller and the two DVDs on the other, so I will try to replug them. But mind you, the computer was working like this since approx. May 2004! So I don't think it's what's happened, but I'll try it anyway. So, where should I look next? Kostas
The Monday 2005-01-17 at 14:04 +0200, Konstantinos Georgokitsos wrote:
Ok, now I've done it. Knoppix can see the drives just fine and anything that is in it. I did not try to burn anything on my DVD-Recorder, but this seems not to be the main problem as I can not list the contents of anything that I insert. So the drives do work ok. And as I said in an earlier post during SUSE bootup (I've done that sever times now) they look fine.
To Carlos E. R.: I have two HDs on one controller and the two DVDs on the other, so I will try to replug them. But mind you, the computer was working like this since approx. May 2004! So I don't think it's what's happened, but I'll try it anyway.
Ok, I understand that under Knoppix you can browse the contents of the CD/DVDs, right? If so, it is not a hardware (cable) problem.
So, where should I look next?
Good question :-) I don't like the automount idea at all, I prefer manual mounting. You could try... -- Cheers, Carlos Robinson
On Monday 17 January 2005 20:40, Carlos E. R. wrote:
Good question :-)
I don't like the automount idea at all, I prefer manual mounting. You could try..
I found it quite neat not to have to mount everytime by hand. Anyway, what do I have to do to change the automount into a manual mount? I probably will have to change the fstab: /dev/dvd /media/dvd subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/dvdrecorder /media/dvdrecorder subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/fd0 /media/floppy subfs fs=floppyfss,procuid,nodev,nosuid,sync 0 0 /dev/cdrom /media/cdrom subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 but into what? Also I assume I have to disable some automounter deamon. Where do I do that (Yast I suppose?) Also, does k3b need to mount the writer, and how will this work with no autofs?
-- Cheers, Carlos Robinson
Kostas
On Tuesday 18 January 2005 07:44, Konstantinos Georgokitsos wrote:
On Monday 17 January 2005 20:40, Carlos E. R. wrote:
Good question :-)
I don't like the automount idea at all, I prefer manual mounting. You could try..
I found it quite neat not to have to mount everytime by hand. Anyway, what do I have to do to change the automount into a manual mount? I probably will have to change the fstab: /dev/dvd /media/dvd subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/dvdrecorder /media/dvdrecorder subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0 /dev/fd0 /media/floppy subfs fs=floppyfss,procuid,nodev,nosuid,sync 0 0 /dev/cdrom /media/cdrom subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
but into what? Also I assume I have to disable some automounter deamon. Where do I do that (Yast I suppose?)
Change 'subfs' to 'auto' and remove the 'fs=xxxfss' altogether. Add 'user' to the mount options, if you want to be able to mount as user. To disable it temporarily, you could also simply do 'umount /dev/dvd', then it won't be mounted automatically and you can do 'mount /dev/dvd /media/dvd' to mount it manually. If you give more than one parameter to mount it won't look in fstab. But then you always have to be root to mount.
Also, does k3b need to mount the writer, and how will this work with no autofs?
You only mount file systems, and until you've burned the CD there is no file system on it, so k3b doesn't mount it.
On Tuesday 18 January 2005 08:55, Anders Johansson wrote:
Change 'subfs' to 'auto' and remove the 'fs=xxxfss' altogether. Add 'user' to the mount options, if you want to be able to mount as user.
To disable it temporarily, you could also simply do 'umount /dev/dvd', then it won't be mounted automatically and you can do 'mount /dev/dvd /media/dvd' to mount it manually. If you give more than one parameter to mount it won't look in fstab. But then you always have to be root to mount.
ok, that little test worked but only with my DVD (so I can use the manual mount method for the moment), but not my DVD-writer: linux:/var/log # umount /dev/dvd linux:/var/log # mount /dev/dvd /media/dvd mount: block device /dev/dvd is write-protected, mounting read-only linux:/var/log # ls /media/dvd . .. autorun.bat autorun.inf boot cdrom.ico index.html KNOPPIX linux:/var/log # umount /dev/dvd linux:/var/log # umount /dev/dvdrecorder linux:/var/log # mount /dev/dvdrecorder /media/dvdrecorder mount: block device /dev/dvdrecorder is write-protected, mounting read-only mount: No medium found linux:/var/log # ls /media/dvdrecorder/ . .. linux:/var/log # umount /dev/dvdrecorder umount: /dev/dvdrecorder: not mounted Now, I must suspect that the dvdrecorder has a physical problem? I will have to try it on another machine to be sure then... hope it is all right it was quite reliable until now.. sniff :-( Ok, that is also the initial error that k3b gave me when trying to burn...
You only mount file systems, and until you've burned the CD there is no file system on it, so k3b doesn't mount it.
Nice explanation! thx! Kostas
On Tuesday 18 January 2005 10:30, Konstantinos Georgokitsos wrote:
Now, I must suspect that the dvdrecorder has a physical problem? I will have to try it on another machine to be sure then... hope it is all right it was quite reliable until now.. sniff :-( Ok, that is also the initial error that k3b gave me when trying to burn...
The DVD-Recorder is definitely half-dead. Fortunately, it still has guarantee. However Automount still does not work again, so I stay with good old manual mount for the moment. Thanks for all your suggestions! Kostas
El 2005-01-18 a las 08:44 +0200, Konstantinos Georgokitsos escribió: [you emailed me direct; I sent copy to the list for future reference]
On Monday 17 January 2005 20:40, Carlos E. R. wrote:
Good question :-)
I don't like the automount idea at all, I prefer manual mounting. You could try..
I found it quite neat not to have to mount everytime by hand.
I know. But you can try to see if that is the problem.
Anyway, what do I have to do to change the automount into a manual mount? I probably will have to change the fstab:
Right. There is an article in the SuSE SDB that explains this in detail; anyway, I'll write what I use.
/dev/dvd /media/dvd subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/dvd /media/dvd auto ro,noauto,user,exec 0 0
/dev/dvdrecorder /media/dvdrecorder subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/dvdrecorder /media/dvdrecorder auto ro,noauto,user,exec 0 0
/dev/fd0 /media/floppy subfs fs=floppyfss,procuid,nodev,nosuid,sync 0 0
unmodified.
/dev/cdrom /media/cdrom subfs fs=cdfss,ro,procuid,nosuid,nodev,exec,iocharset=utf8 0 0
/dev/cdrom /media/cdrom auto ro,noauto,user,exec 0 0
but into what? Also I assume I have to disable some automounter deamon. Where do I do that (Yast I suppose?)
Not really, I have it on; I only don't tell it about my cdroms. It is quite handy for other removable media, like usb things. I also dissabled it for flopyes, but you do not need to do so, you are not having problems with them. If you did, the line would be like: /dev/fd0 /media/floppy auto noauto,user,sync 0 0
Also, does k3b need to mount the writer, and how will this work with no autofs?
Actually, I dissabled the automount feature because I had problems recording; so it should work better, no interferences. -- Saludos Carlos Robinson
On 13:08 Tue 18 Jan , Carlos E. R. wrote:
<SNIP>
Not really, I have it on; I only don't tell it about my cdroms. It is quite handy for other removable media, like usb things. I also dissabled it for flopyes, but you do not need to do so, you are not having problems with them. If you did, the line would be like:
/dev/fd0 /media/floppy auto noauto,user,sync 0 0
While we're on the subject... This begs a question, if I may: I have a PCMCIA flash disk that, until mounted, causes the kernel to spit out messages at such a high rate that it is staggering. How would I cause that to mount automatically, as well (assuming there is a way)? /dev/hde1 /mnt/sandisk vfat user,noauto,iocharset=iso8859-1,codepage=437 0 0 <SNIP>
Many thanks... -- ..."Yogi" CH Namast Yoga Studio
The Tuesday 2005-01-18 at 10:11 -0600, C Hamel wrote:
While we're on the subject... This begs a question, if I may: I have a PCMCIA flash disk that, until mounted, causes the kernel to spit out messages at such a high rate that it is staggering. How would I cause that to mount automatically, as well (assuming there is a way)? /dev/hde1 /mnt/sandisk vfat user,noauto,iocharset=iso8859-1,codepage=437 0 0
Change that noauto by auto. But of course, that may fail if it is not available at boot time, and will lock the booting process and dump you into an emergency prompt were you are supoossed to fsck drives. The real way would be to address those error messages. -- Cheers, Carlos Robinson
Carlos, On Monday 17 January 2005 10:40, Carlos E. R. wrote:
...
I don't like the automount idea at all, I prefer manual mounting. ...
Why? You like doing things the hard way? It's kind of tedious, isn't it? I can see disallowing auto-run file execution--I do--but what's to be gained by having to go through the ritual "mount ..." incantion?
-- Cheers, Carlos Robinson
RRS
On Tuesday 18 January 2005 07:53, Randall R Schulz wrote:
Carlos,
On Monday 17 January 2005 10:40, Carlos E. R. wrote:
...
I don't like the automount idea at all, I prefer manual mounting. ...
Why? You like doing things the hard way? It's kind of tedious, isn't it? I can see disallowing auto-run file execution--I do--but what's to be gained by having to go through the ritual "mount ..." incantion?
It depends on what you're running. If you've ever tried running multiple OSes in vmware, where all OSes including the host is using automounting you will very quickly see the beauty of manual mounting :)
The Monday 2005-01-17 at 22:53 -0800, Randall R Schulz wrote:
On Monday 17 January 2005 10:40, Carlos E. R. wrote:
...
I don't like the automount idea at all, I prefer manual mounting. ...
Why? You like doing things the hard way? It's kind of tedious, isn't it? I can see disallowing auto-run file execution--I do--but what's to be gained by having to go through the ritual "mount ..." incantion?
For one, I like being in control, I do not want my CDs spinning needlessly. And two, and this is the decisive reason, it was problematic, specially when trying to record a CD. You will see an article in the SuSE database (SDB) at their web page where they coment on this, recognise some people are having trouble with it, and explain how to dissable automount and go back to the old behaviour. -- Cheers, Carlos Robinson
On Tuesday 18 January 2005 06:53, Randall R Schulz wrote:
Carlos,
On Monday 17 January 2005 10:40, Carlos E. R. wrote:
...
I don't like the automount idea at all, I prefer manual mounting. ...
Why? You like doing things the hard way? It's kind of tedious, isn't it? I can see disallowing auto-run file execution--I do--but what's to be gained by having to go through the ritual "mount ..." incantion?
Speed? When my system automounts it uses that sync option that means hopeless transfer rates. I measured the difference between synced and non-synced with my firewire HD, and the difference was something crazy like 16x as long with a synced mount! If someone knows a way to tune the automount parameters for individual devices, I'd be very pleased to know the details. -- Steve Boddy
On Tuesday 18 January 2005 23:23, Stephen Boddy wrote:
On Tuesday 18 January 2005 06:53, Randall R Schulz wrote:
Carlos,
On Monday 17 January 2005 10:40, Carlos E. R. wrote:
...
I don't like the automount idea at all, I prefer manual mounting. ...
Why? You like doing things the hard way? It's kind of tedious, isn't it? I can see disallowing auto-run file execution--I do--but what's to be gained by having to go through the ritual "mount ..." incantion?
Speed? When my system automounts it uses that sync option that means hopeless transfer rates. I measured the difference between synced and non-synced with my firewire HD, and the difference was something crazy like 16x as long with a synced mount! If someone knows a way to tune the automount parameters for individual devices, I'd be very pleased to know the details.
Actually, thinking about it, this is more to do with hotplug. -- Steve Boddy
The Tuesday 2005-01-18 at 23:25 -0000, Stephen Boddy wrote:
Speed? When my system automounts it uses that sync option that means hopeless transfer rates. I measured the difference between synced and non-synced with my firewire HD, and the difference was something crazy like 16x as long with a synced mount! If someone knows a way to tune the automount parameters for individual devices, I'd be very pleased to know the details.
Actually, thinking about it, this is more to do with hotplug.
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow. -- Cheers, Carlos Robinson
Carlos, On Tuesday 18 January 2005 15:34, Carlos E. R. wrote:
The Tuesday 2005-01-18 at 23:25 -0000, Stephen Boddy wrote:
Speed? When my system automounts it uses that sync option that means hopeless transfer rates. I measured the difference between synced and non-synced with my firewire HD, and the difference was something crazy like 16x as long with a synced mount! If someone knows a way to tune the automount parameters for individual devices, I'd be very pleased to know the details.
Actually, thinking about it, this is more to do with hotplug.
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow.
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
-- Cheers, Carlos Robinson
Randall Schulz
On Wednesday 19 January 2005 01:23, Randall R Schulz wrote:
Carlos,
On Tuesday 18 January 2005 15:34, Carlos E. R. wrote:
The Tuesday 2005-01-18 at 23:25 -0000, Stephen Boddy wrote:
Speed? When my system automounts it uses that sync option that means hopeless transfer rates. I measured the difference between synced and non-synced with my firewire HD, and the difference was something crazy like 16x as long with a synced mount! If someone knows a way to tune the automount parameters for individual devices, I'd be very pleased to know the details.
Actually, thinking about it, this is more to do with hotplug.
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow.
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
And who gave you permission to make a logical and relevant statement? ;-) I could read back through the thread, and spend two paragraphs trying to make it look like you're talking twaddle, but as a refreshing change for this list, I'll just shut up instead :-) -- Steve Boddy
Steve, Buddy, On Tuesday 18 January 2005 17:48, Stephen Boddy wrote:
...
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
And who gave you permission to make a logical and relevant statement? ;-)
I could read back through the thread, and spend two paragraphs trying to make it look like you're talking twaddle, but as a refreshing change for this list, I'll just shut up instead :-)
That's hardly any way to support ISPs who charge by the byte.
-- Steve Boddy
RRS
On Wednesday 19 January 2005 02:07, Randall R Schulz wrote:
Steve, Buddy,
On Tuesday 18 January 2005 17:48, Stephen Boddy wrote:
...
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
And who gave you permission to make a logical and relevant statement? ;-)
I could read back through the thread, and spend two paragraphs trying to make it look like you're talking twaddle, but as a refreshing change for this list, I'll just shut up instead :-)
That's hardly any way to support ISPs who charge by the byte.
-- Steve Boddy
RRS LOL. Two lines or two pages; doesn't matter. Ain't unmetered great :-D But hang on... that means I saved anyone on metered ISP's some money... Come on everyone, cough up. Reward those who don't talk rubbish for ever and a day by donating some of your gains... 'Cept I probably just burnt all savings talking about it :-(
-- Steve Boddy
The Tuesday 2005-01-18 at 17:23 -0800, Randall R Schulz wrote:
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow.
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
I mentioned automount being usefull for hot-plugable drives, like usb thing, and perhaps for floppy drives. Then Stephen mentioned a firewire HD, and that is R/W media also. So, yes, I think that automount probably is not a good idea for R/W media. Also, what about dvd ram? Mmm, I don't know if it is available in linux yet. -- Cheers, Carlos Robinson
On Wednesday 19 January 2005 23:46, Carlos E. R. wrote:
The Tuesday 2005-01-18 at 17:23 -0800, Randall R Schulz wrote:
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow.
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
I mentioned automount being usefull for hot-plugable drives, like usb thing, and perhaps for floppy drives. Then Stephen mentioned a firewire HD, and that is R/W media also. So, yes, I think that automount probably is not a good idea for R/W media.
Also, what about dvd ram? Mmm, I don't know if it is available in linux yet.
-- Cheers, Carlos Robinson
"Oh! my hero!" while fluttering eyelids in a masculine manner ;-) There I am getting textually-thrashed by Serf Sour-Schulz, and my knight-in-shining-bits comes charging in brandishing a mighty keyboard (the keyboard having usurped the pens dominance over the sword some years ago ;-), and mortally wounds Randall's reasoning! Sorry. It's late, I'm tired, and I tend towards verbal nonsense in this state. Hey Patrick, is that far enough off-topic for you? On DVD-RAM, do you mean DVD+/-RW? Isn't this what that whole Packet Writing SuSE forum is all about? AFAICT it's available, but tricky/unreliable, and not very fast at all. If you really mean RAM, then I'm not sure at all. -- Steve Boddy
Stephen, On Thursday 20 January 2005 13:22, Stephen Boddy wrote:
On Wednesday 19 January 2005 23:46, Carlos E. R. wrote:
The Tuesday 2005-01-18 at 17:23 -0800, Randall R Schulz wrote:
Well, a drive that can be hotplugged must be mounted sync, because the user may remove it anytime. That means the kernel can not buffer it and delay write operations... thus, it will be slow.
I thought we were talking about DVD-ROM drives? Such devices not written to, and hence the synchronous option imposes no performance penalty.
I mentioned automount being usefull for hot-plugable drives, like usb thing, and perhaps for floppy drives. Then Stephen mentioned a firewire HD, and that is R/W media also. So, yes, I think that automount probably is not a good idea for R/W media.
Also, what about dvd ram? Mmm, I don't know if it is available in linux yet.
-- Cheers, Carlos Robinson
"Oh! my hero!" while fluttering eyelids in a masculine manner ;-)
There I am getting textually-thrashed by Serf Sour-Schulz, and my knight-in-shining-bits comes charging in brandishing a mighty keyboard (the keyboard having usurped the pens dominance over the sword some years ago ;-), and mortally wounds Randall's reasoning!
Sorry. It's late, I'm tired, and I tend towards verbal nonsense in this state.
No kidding...
Hey Patrick, is that far enough off-topic for you?
On DVD-RAM, do you mean DVD+/-RW? Isn't this what that whole Packet Writing SuSE forum is all about? AFAICT it's available, but tricky/unreliable, and not very fast at all. If you really mean RAM, then I'm not sure at all. --
No. DVD-RAM is a separate thing. It's a kind of DVD format that allows random access, read-write operation. It simulates a regular magnetic or flash-RAM type device. See http://en.wikipedia.org/wiki/DVD-RAM for more information.
Steve Boddy
Randall Schulz
On Friday 14 January 2005 05:42 am, Konstantinos Georgokitsos wrote:
On Friday 14 January 2005 11:47, David SMITH wrote:
On Fri, Jan 14, 2005 at 11:21:07AM +0200, Konstantinos Georgokitsos wrote:
I have no idea where else to look. Can anybody help me?
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time? Well, on second thought it's certainly possible. We had a power shortage a few days ago, who knows. I'd have to open the box and try the drives on another machine.
Have you rebooted the machine since the failures? I hate to recommend anyone boot linux for no reason but I have had cases where a drive will get 'farkled' by some media and rebooting (resetting the drive) will bring it back. Haven't found anything else that will do it.
The Friday 2005-01-14 at 12:42 +0200, Konstantinos Georgokitsos wrote:
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time? Well, on second thought it's certainly possible. We had a power shortage a few days ago, who knows. I'd have to open the box and try the drives on another machine.
Are they both on the same cable? Then try reseating the connectors first, and if not, changing the cable. -- Cheers, Carlos Robinson
Carlos E. R. wrote:
The Friday 2005-01-14 at 12:42 +0200, Konstantinos Georgokitsos wrote:
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time? Well, on second thought it's certainly possible. We had a power shortage a few days ago, who knows. I'd have to open the box and try the drives on another machine.
Are they both on the same cable? Then try reseating the connectors first, and if not, changing the cable.
I have another option: I did have too many devices in my computer which resulted in weird phenomenons like loss of one or more drives, loss of one or more controller cards (yes, indeed) which simply couldn't be seen anymore. When I removed 2 discs again, it started to work fine again. How about you? How many drives (discs, dvd/cd-roms) etc do you have? Martin
The Saturday 2005-01-15 at 00:10 +0100, Martin Deppe wrote:
I have another option: I did have too many devices in my computer which resulted in weird phenomenons like loss of one or more drives, loss of one or more controller cards (yes, indeed) which simply couldn't be seen anymore.
Sounds like too much power demanded from the power supply. -- Cheers, Carlos Robinson
Carlos E. R. wrote:
The Friday 2005-01-14 at 12:42 +0200, Konstantinos Georgokitsos wrote:
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
Both of them, at the same time? Well, on second thought it's certainly possible. We had a power shortage a few days ago, who knows. I'd have to open the box and try the drives on another machine.
Are they both on the same cable? Then try reseating the connectors first, and if not, changing the cable.
I have another option: I did have too many devices in my computer which resulted in weird phenomenons like loss of one or more drives, loss of one or more controller cards (yes, indeed) which simply couldn't be seen anymore. When I removed 2 discs again, it started to work fine again. How about you? How many drives (discs, dvd/cd-roms) etc do you have? Martin I forgot to mention that it was an issue of the power supply unit (it became too small for the number of devices it had to supply). Martin
Weird - I just did a fresh install of SuSE 9.2, and my DVD-RAM burner has disappeared. It's not listed under CD/DVD devices under yast - I think it's detected at boot time (but can't swear to it). Is this something that other people have noticed with 9.2? Are there any simple steps for re-incorporating it into the system? BTW it was working absolutely fine under 9.1 the day before, so I am almost certain the drive hasn't failed. Hope someone can help. Cheers, Jon. David SMITH wrote:
On Fri, Jan 14, 2005 at 11:21:07AM +0200, Konstantinos Georgokitsos wrote:
I have no idea where else to look. Can anybody help me?
Are you sure the hardware is still OK? My DVD-ROM drive failed in a similar manner.
-- Jonathan Brooks (Ph.D.) Research Fellow PaIN Group, Department of Human Anatomy & Genetics University of Oxford, South Parks Road, Oxford, OX1 3QX tel: +44(0)1865-282654 fax: +44(0)1865-282656
The Friday 2005-01-14 at 22:06 -0000, Jonathan Brooks wrote:
Weird - I just did a fresh install of SuSE 9.2, and my DVD-RAM burner has disappeared. It's not listed under CD/DVD devices under yast - I think it's detected at boot time (but can't swear to it).
Have a carefull look at /var/log/boot.msg to know for sure. -- Cheers, Carlos Robinson
Carlos E. R. wrote:
The Friday 2005-01-14 at 22:06 -0000, Jonathan Brooks wrote:
Weird - I just did a fresh install of SuSE 9.2, and my DVD-RAM burner has disappeared. It's not listed under CD/DVD devices under yast - I think it's detected at boot time (but can't swear to it).
Have a carefull look at /var/log/boot.msg to know for sure.
Hi, thanks - I had a look at /var/log/boot.msg and the relevant entry seems to be: <7>Probing IDE interface ide1... <7>ide1: Wait for ready failed before probe ! <4>hdd: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive <4>ide1 at 0x170-0x177,0x376 on irq 15 Is this something to do with DMA? If so, how do I turn it off for /dev/hdc and make it permanent? Cheers, Jon.
The Saturday 2005-01-15 at 08:55 -0000, Jonathan Brooks wrote:
Have a carefull look at /var/log/boot.msg to know for sure.
Hi, thanks - I had a look at /var/log/boot.msg and the relevant entry seems to be: <7>Probing IDE interface ide1... <7>ide1: Wait for ready failed before probe ! <4>hdd: DVD-ROM DDU1621, ATAPI CD/DVD-ROM drive <4>ide1 at 0x170-0x177,0x376 on irq 15
Is this something to do with DMA? If so, how do I turn it off for /dev/hdc and make it permanent?
But your drive is there, insn't? Or do you mean that there should be another one at hdc? If so, I don't think DMA is related, if fails earlier than that, before any probe. Are you sure it works, that the cable is ok, etc? Try another OS, be it a knopix, or even windows. For your question, grep -i DMA /etc/sysconfig/* finds it: /etc/sysconfig/hardware~:DEVICES_FORCE_IDE_DMA_ON="/dev/hdc /dev/hdd" /etc/sysconfig/hardware~:DEVICES_FORCE_IDE_DMA_OFF="" -- Cheers, Carlos Robinson
participants (10)
-
Anders Johansson -
Bruce Marshall -
C Hamel -
Carlos E. R. -
David SMITH -
Jonathan Brooks -
Konstantinos Georgokitsos -
Martin Deppe -
Randall R Schulz -
Stephen Boddy