[Grml] Re: booting from external disk
Michael Prokop
mika at grml.org
Fri Mar 23 12:56:47 CET 2007
* August C. Quint <augustq at gmx.net> [20070322 16:11]:
> >> Maybe using Grub instead is worth a try.
> I think we should first try to solve problem #2.
Yeah for sure, just answered your question. ;)
> >> Sorry no idea yet. Can you please provide me a screenshot of the
> >> booting process where it hangs?
> Sorry, I don't know how to make a screenshot in this stage of booting. And I
> don't have a digital camera (yet). So I try to write down the lines visible:
> the last lines before the problem happesn are related to raidx, so here it
> goes:
> Success: loaded module raid456
> Success: loaded module raid5
> Success: loaded module raid6
> Modprobe: FATAL: Module raid10 not found
> Done.
> Begin: Assemblying all MD arrays ...
> Now I get 6x the lines:
> usb 2-2: reset high speed USB device running ehci_hcd and address 2
> followed by
> sd: 0:0:0:0: SCSI error: return code = 0x00050000
> And this will continue.
Ok, so if you press return then you don't see a busybox shell or
something like that?
> It looks like it accessed the disk successfully but it tries to access the
> single disk as a raid-disk in this stage (but I'm no expert here).
No, shouldn't be the case because if there aren't any MD arrarys
present, mdadm will not touch anything.
> What can I do? Which information do you need?
Please make sure that you are trying to boot the correct system.
So boot your system but append root=/dev/sdb1 to the end of the
'grml' entry in lilo (yes, this works interactive - no reason to
adjust /etc/lilo.conf) this time if your grml system resides on
first partition of the device. What are you getting then? Any
changes when using root=/dev/sda1?
> >> Oh, and you might want to try to use root=UUID=... instead of
> >> root=/dev/sd[a-z]... so you can make sure your system uses the
> >> correct device for booting.
> where do I have to put these modifications (I'm no expert here) ?
> I guess: I can use Knoppix to boot the machine and look for the file lio.conf
> (or so) on this external harddisk. Right?
Knoppix?!
http://michael-prokop.at/blog/2006/08/11/stable-root-device-aka-uuid/
regards,
-mika-
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