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[Bug 177050] Installation fails when reading from CD times out, possibly due to missing Floppy drive
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 11 Jan 2007 12:43:45 -0700 (MST)
  • Message-id: <20070111194345.E368CF97@xxxxxxxxxxxxxxxxxxxxxx>

VladCodrea@xxxxxxxxxxxxxxx changed:

What |Removed |Added
Info Provider|VladCodrea@xxxxxxxxxxxxxxx |

------- Comment #21 from VladCodrea@xxxxxxxxxxxxxxx 2007-01-11 12:43 MST -------
Created an attachment (id=112538)
--> (
DMA enabled in CD Properties Control Panel of Windows 98

I verified file integrity the following way:

1) I inserted a pressed Kubuntu CD while the laptop was booted in Windows 98.

2) I made the D: (CD/DVD) drive shareable in Windows 98 and copied it entirely
to a Linux computer via SAMBA.

3) On the Linux computer, I ran "md5sum -c md5sum.txt" in the copied folder and
all files were found to be OK.

To determine whether Windows 98 was using DMA, I went to Control Panel ->
System Properties -> Device Manager -> CDROM -> TORiSAN DVD-ROM DRDN216 ->
Properties -> Settings. The DMA checkbox is selected, as shown in the attached

The CPU usage of Windows 98 while the CD was being copied averaged at 30%, and
the baseline when the computer was idle was 5%.

To see whether turning off mwdma2 in Linux helps, I booted the laptop into
OpenSuse 10.2 and ran 'hdparm -d0 /dev/hdc'. Next I inserted the Kubuntu CD,
and saw that it was mounted as "/media/Kubuntu 6.06 amd64".

I then attempted to copy the entire contents of "/media/Kubuntu 6.06 amd64"
onto the hard drive. The first couple of files (autorun.inf, rssfeeds.rdf,
aggreg8.jar, and chrome.rdf) were copied, after which the CD stopped spinning
and laptop started being extremely sluggish. The last lines in dmesg were:

hdc: DMA disabled
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
spurious 8259A interrupt: IRQ7.

Thank you for your help.

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