Re: Ubuntu Dapper (6.06) Install fails on cdrom open, kernel panic -- please help
- From: "James Elliott" <James.Elliott@xxxxxxxxxxxxxxx>
- Date: Tue, 25 Jul 2006 06:32:40 +0800
----- Original Message ----- From: "Alain --" <ubuntu@xxxxxxxxxxxxxx>
To: "Ubuntu Help and User Discussions" <ubuntu-users@xxxxxxxxxxxxxxxx>
Sent: Tuesday, July 25, 2006 6:11 AM
Subject: Ubuntu Dapper (6.06) Install fails on cdrom open, kernel panic -- please help
Dear All,
Environment:
- Gateway2000 Pentium Pro 200MHz
- 256 MB RAM (SIMMs)
- 2 IDE HDs
- this PC currently does not have an O/S installed.
History:
- Original HD: 6GB, made secondary drive when
I got my 20GB HD. No O/S on this HD
- 20GB HD, crashed and unusable due power failure
(I know, I should have had a UPS, but)
- Ran Win98 till event above (original O/S was Win95)
- Bought replacement HD (no O/S)
- I struggled to get the BIOS to see both HD, but
eventually it did see them both (new 20GB and old 6GB)
Jumper settings one to Cable Select, the Other to Slave.
It seems no other jumper setting works, though I must
not have tried all combinations.
Ubuntu:
- downloaded Dapper (6.06 LTS) for desktop (i386) iso
image
- burnt CD with Ahead Nero
- CD seems fine when I look at it (data) on the PC on
which it was burnt (my only option)
Install sequence:
- Configured BIOS to boot from CD
- Boot shows ubuntu CD-ROM start screen (count down
to boot, boot options)
- Boot
Problem:
It hangs very near the start of the boot sequence.
I have not found, in the forum or the on-line documentation,
any help to resolve my problem. The only thing I found, that
could help, mentioned to try with 128MB ram instead of their
full complement of 512MB. (I suppose I could go from 256 to
128, I have not tried that, at this point).
==================================================
I ran several scenarios (detail):
1/ Plain, straight boot, no change (boot options are 'boot=casper initrd=/casper/initrd.gz ramdisk_size=1048576 root=/dev/ram rw quiet splash -- ').
2/ Changed boot options to read '.../ram rw noapic nolapic -- '
3/ Changed boot options to read '.../ram rw acpi=off -- '
4/ Changed boot options to read '.../ram rw acpi=off noapic nolapic -- '
---------------
a/ Tried options above with ' quiet splash'
b/ Tried options above without ' quiet splash'
c/ Tried options above with ' splash' but without ' quiet'
d/ Tried options above without ' splash' but with ' quiet'
Options 1, 2, 3 and 4 behave exactly the same way.
Reporting variation are observed between a, b, c and d, but the same behaviour overall, regardless of which set of options I started with in 1 to 4.
Full boot sequence:
- In all cases it starts with 'loading Linux kernel' shown in a pop-up window with a progress bar, goes to 100% quite quickly, waits a few seconds and blanks the screen.
- In a & d (quiet) I can then see a normal message: 'uncompressing kernel... ok, booting the kernel'; and an error message: 'ACPI: unable to locate RSDP'.
- In b & c (no quiet) I do not have time to see those messages, but I suppose that they are there too.
- In a, I then see the splash screen that shows: 'Loading essential drivers... ok' and 'mounting root file system...' (no ok, hangs there, though shortly after this message the CD-ROM spins at high speed for a few seconds and stops.
- In b, I then see a whole pile of messages whizzing by, it comes to a stop on 'cdrom: open failed' then the CD-ROM spins at high speed for a few minutes and stops. exactly one minute after the 'cdrom: open failed' message comes '<0>Kernel panic - not syncing: Fatal exception in interrupt'.
- In c, I see something similar to 'a' with a bit more info: first message on splash screen is 'Loading essential drivers... ok', then 'Running /scripts/init-premount ok', then 'mounting root file system...' (no ok) and finally 'Running /scripts/casper-premount ok', the CD-ROM spins at high speed for a few seconds then stops.
- In d, I see a bit less than 'b': it does not show 'cdrom: open failed', but eventually shows the kernel panic message as above.
In all cases nothing ever happens after the above.
At this point CTRL-ALT-DEL does not work.
No keyboard input seems to have any effect.
The only way I found to try again or do anything is a power-off.
That's where I need help: to try other boot sequences maybe.
The computer hardware has not changed (except for on failed HD with Win98 replaced by a new and blank HD without any O/S) all hardware worked before. There is a possibility that some hardware was damaged by the power failure that damaged the previous 20GB HD, but it seems to me that this is not the problem at this stage.
I'd like to know what locks and why.
Amongst other problems would be to find a way to record a trace of all boot messages (maybe onto floppy disk). But I don't know how to do this. Bearing in mind the install hangs with no option but a hard reset.
That's the full story.
Thanks for reading, hoping someone out there can help.
Best regards,
Alain.
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