On Thu, Sep 29, 2005 at 12:22:23PM -0500, Patrick Shanahan wrote:

...

What I want to know what program I must use to know what the correct root is. <snip>> counting starts with zero as the first digit.

0 = a (and 0 = 1)

root (hd3,2) = hdd3 /dev/hdf3 = (hd6,2)

Well, with me it is hd3,2. What I am looking for is not so much a way to calculate it yourself, but a way to determine it automaticaly, something like: # foo /dir/bar hd3,2 or # foo /dev/hdf3 hd3,2 Or something similar. houghi -- Quote correct (NL) http://www.briachons.org/art/quote/ Zitiere richtig (DE) http://www.afaik.de/usenet/faq/zitieren Quote correctly (EN) http://www.netmeister.org/news/learn2quote.html

On Thu, Sep 29, 2005 at 12:59:54PM -0500, Patrick Shanahan wrote:

* houghi [09-29-05 12:40]:

...

Well, with me it is hd3,2. What I am looking for is not so much a way to calculate it yourself, but a way to determine it automaticaly, something like:

# foo /dir/bar hd3,2

or # foo /dev/hdf3 hd3,2

Or something similar.

cat /etc/fstab

No, that is not correct. That does not hold any information about what grub has. Where whould a program or script get the (hd3,2) info from that? I think I am not being clear. I am looking for a command or program or script that translates either /media/data or /dev/hdf3 to the correct root information. I am able to calculate it myself. I just want the computer to do it for me. A command that has /dev/hdf3 as input and hd3,2 as output (or whatever is correct) houghi -- Quote correct (NL) http://www.briachons.org/art/quote/ Zitiere richtig (DE) http://www.afaik.de/usenet/faq/zitieren Quote correctly (EN) http://www.netmeister.org/news/learn2quote.html

* houghi [10-01-05 10:47]:

I have a bit more information. Say I have the Alpha 1 all in /media/data/opensuse/DVD_10.1_A1 That means that linux and initard are: /media/data/opensuse/DVD_10.1_A1/boot/loader/linux /media/data/opensuse/DVD_10.1_A1/boot/loader/initrd

Now /media/data is /dev/hdf3, so I must enter the following in grub:

title DVD_10.1_A1 root # Later kernel /opensuse/DVD_10.1_A1/boot/loader/linux initrd /opensuse/DVD_10.1_A1/boot/loader/initrd

Now I still need to know what root is. I can do this by counting. I can also do this by lauching `grub` as root and enter: grub> find /opensuse/DVD_10.1_A1/boot/loader/linux

This gives me : (hd3,2)

Any way I could do this without entering grub?

Not to my knowledge. BUT, you said that /media/data is /dev/hdf3 and grub gives you (hd3,2). This is incorrect as I understand. 'f' is the sixth letter which would translate to the digit 5, the sixth digit counting zero. I believe it should read (hd5,2). Also remember, the number of hard drives is not relevant for the device location. It *is* the device location on the bus that determines the device name, /dev/hdf3, sixth device, third primary partition on the device. -- Patrick Shanahan Registered Linux User #207535 http://wahoo.no-ip.org @ http://counter.li.org HOG # US1244711 Photo Album: http://wahoo.no-ip.org/gallery2

On Saturday 01 October 2005 18:02, Patrick Shanahan wrote:

* houghi [10-01-05 10:47]:

...

I have a bit more information. Say I have the Alpha 1 all in /media/data/opensuse/DVD_10.1_A1 That means that linux and initard are: /media/data/opensuse/DVD_10.1_A1/boot/loader/linux /media/data/opensuse/DVD_10.1_A1/boot/loader/initrd

Now /media/data is /dev/hdf3, so I must enter the following in grub:

title DVD_10.1_A1 root # Later kernel /opensuse/DVD_10.1_A1/boot/loader/linux initrd /opensuse/DVD_10.1_A1/boot/loader/initrd

Now I still need to know what root is. I can do this by counting. I can also do this by lauching `grub` as root and enter: grub> find /opensuse/DVD_10.1_A1/boot/loader/linux

This gives me : (hd3,2)

Any way I could do this without entering grub?

Not to my knowledge.

BUT, you said that /media/data is /dev/hdf3 and grub gives you (hd3,2). This is incorrect as I understand. 'f' is the sixth letter which would translate to the digit 5, the sixth digit counting zero. I believe it should read (hd5,2).

Also remember, the number of hard drives is not relevant for the device location. It *is* the device location on the bus that determines the device name, /dev/hdf3, sixth device, third primary partition on the device.

No it isn't. For grub, what's interesting is the ordering the BIOS uses (changeable in the device map) I don't think it would be too much difficulty ripping out the device identification bits of grub to a stand-alone utility. But isn't "cat /boot/grub/device.map" sufficient?

On Saturday 01 October 2005 18:37, houghi wrote:

On Sat, Oct 01, 2005 at 06:17:52PM +0200, Anders Johansson wrote:

...

I don't think it would be too much difficulty ripping out the device identification bits of grub to a stand-alone utility. But isn't "cat /boot/grub/device.map" sufficient?

That's already a part of it. Now I also need to know what the partition is.

The way grub-install does it is df `dirname filename| sed -n 's%.*\(/dev/[^ ]*\).*%\1%p' I'm looking at the BIOS stuff in grub now to see if I can make a stand-alone utility out of it

On Saturday 01 October 2005 19:45, houghi wrote:

On Sat, Oct 01, 2005 at 07:17:48PM +0200, Anders Johansson wrote:

...

The way grub-install does it is

df `dirname filename| sed -n 's%.*\(/dev/[^ ]*\).*%\1%p'

I'm looking at the BIOS stuff in grub now to see if I can make a stand-alone utility out of it

I think I am going in circles here. The above (if you put a backtick in front of |, making it filename`| )

Well, I expressed myself badly. dirname is a command, but filename was meant to be replaced with whatever file you wanted to know the location of

tells me /dev/hdf3. That still does not show me hd3,2

No, but combine that with the device map and you're set

Would be handy if all could be done with one command

I'm working on it

On Sat, Oct 01, 2005 at 09:26:32PM +0200, houghi wrote:

I am working on some butt ugly bash script myself. Still a pity that there is not a build in command to do it with.

OK. Here is the code I have made. Nit very good looking and too much grep and awk instead of sed. Also too many parameters. You run it as `bios /path/to/linux_kernel` At this moment it only outputs the grub information. I will edit it so that lilo will also work. I then will include it in makeSUSEdvd in such a way that if you run makeSUSEdvd it will tell you what to fill out in both grub and lilo config files. If anybody has an easier way, please let me know. Two examples: houghi@penne : bios /media/data/opensuse/DVD_10.1_A1/boot/loader/linux ### Put the following in /boot/grub/menu.lst ### title SOMETHING root (hd3,2) linux /opensuse/DVD_10.1_A1/boot/loader/linux initrd /opensuse/DVD_10.1_A1/boot/loader/initrd houghi@penne : mount /dev/hdf6 /mnt/ houghi@penne : bios /mnt/10.1/boot/loader/linux ### Put the following in /boot/grub/menu.lst ### title SOMETHING root (hd3,5) linux /10.1/boot/loader/linux initrd /10.1/boot/load Here is the code I used: #!/bin/bash # bios # Get the directory DEV0=`dirname $1` DEV=`df $DEV0 |grep dev|awk '{print $1}'` # Get the prefix PRE=`df $1 |grep dev|awk '{print $6}'` AFT=`echo $DEV0|sed s#$PRE##g` # Get the number NUM=`echo $DEV|awk -F/dev/... '{f=$NF}END{print f+0}'` # Get the boot sequence DEV2=`echo $DEV|awk -F${NUM} '{print $1}'` # Get it all together let NUM=NUM-1 DEV3=`grep $DEV2 /boot/grub/device.map|awk -F")" '{print $1}'`",$NUM)" #output echo "### Put the following in /boot/grub/menu.lst ###" echo "title SOMETHING" echo " root $DEV3" echo " linux $AFT/linux" echo " initrd $AFT/initrd" houghi -- Quote correct (NL) http://www.briachons.org/art/quote/ Zitiere richtig (DE) http://www.afaik.de/usenet/faq/zitieren Quote correctly (EN) http://www.netmeister.org/news/learn2quote.html

* houghi [10-01-05 11:35]:

On Sat, Oct 01, 2005 at 11:02:16AM -0500, Patrick Shanahan wrote:

...

BUT, you said that /media/data is /dev/hdf3 and grub gives you (hd3,2). This is incorrect as I understand. 'f' is the sixth letter which would translate to the digit 5, the sixth digit counting zero. I believe it should read (hd5,2).

It is hd3,2. It boots with hd3,2 and even grub gives me 3,2 (See my other post.)

I stand corrected. I should have looked closer. My own system shows /dev/hde as (hd2). sorry for the mis-information. My bad.... -- Patrick Shanahan Registered Linux User #207535 http://wahoo.no-ip.org @ http://counter.li.org HOG # US1244711 Photo Album: http://wahoo.no-ip.org/gallery2