I've been digging into this error. I don't recommend diving into the
deep-end of debian-installer (d-i) unless you have to! I present a
simple 4-line modification to 'list-devices' that solves the problem.
The root cause is the way d-i's /bin/list-devices script detects a CD
using udevinfo. the script iterates all the devices in /sys/block/
In the cases that are failing the drives are on the IEEE1394 bus:
udevinfo -q all -p /sys/block/sr0
P: /block/sr0
N: scd0
S: disk/by-id/ieee1394-xxxxxx...
S: disk/by-path/pci-xxxx....
E: DEVTYPE=disk
E: ID_SERIAL=xxxxx...
E: ID_BUS =ieeee1394
E: ID_PATH=pcixxxx.....
At the point where CD-ROMs are detected the /bin/list-devices script
does this:
if ! $match && [ "$TYPE" = cd ]; then
if udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q '^ID_CDROM='; then
match=:
fi
fi
Obviously, there isn't an ID_CDROM since DEVTYPE = disk.
When the failure occured I used Ctrl+Alt+F2 to switch to a virtual
terminal then using "nano /bin/list-devices" I modified it to read:
if ! $match && [ "$TYPE" = cd ]; then
if udevinfo -q env -p "$devpath" 2>/dev/null | \
grep -q '^ID_CDROM='; then
match=:
elif udevinfo -q name -p "$devpath" 2>/dev/null | \
grep -q 'cd'; then
match=:
fi
fi
I then returned to the installer menu using Ctrl+Alt+F1 and ran the
"Detect and mount CD-ROM" step once more. It successfully detects the
CD-ROM drive and ends up reporting:
CD-ROM detected
The CD-ROM autodetection was successful. A CD-ROM drive has been found and it
currently contains the CD Ubuntu 7.10 "Gutsy Gibbon" - Alpha i386 (20070921.1).
The installation will now continue.
I had a similar failure trying to install Feisty on a Dell PowerEdge 4x
Xeon server earlier this year. On that occasion I dropped Ubuntu because
I didn't have the time to debug the issue fully. That suggests to me
this issue could be affecting a lot more systems than we might have
thought.
Hopefully you can test and apply this patch to d-i so the installer
works on a wider range of systems.
I'll now try a complete install run and hope this solves bug #143963
too.
--
Gutsy Alternate fails: cannot detect and mount CD-ROM
https://bugs.launchpad.net/bugs/143958
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