iB::Topic::GRUB error - /dev/cloop & the BIOS

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Topic: GRUB error - /dev/cloop & the BIOS, /dev/cloop has no corresp. BIOS drive

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daldred

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Posts: 13
Joined: Mar. 2006

Posted: Feb. 05 2007,18:47

I'm trying to do a traditional HD install on an old laptop, which has no CDROM. I've got DSL running (as if from CD) using loadlin: the files from the ISO are on /dev/hda5.

When I run the installation, GRUB is not installed - the installation bombs out with an error but the window closes too fast to see it. Running

$ sudo grub-install /dev/hda

produces an error:

/dev/cloop has no corresponding BIOS drive

Rebooting now drops me straight back into Windows, with no GRUB involvement - so it's not installed. The advice on similar errors elsewhere relies on being able to amend /boot/grub/devices.map - but at this stage of the installation that file is on a read-only device

Any suggestions, anyone? I've run this process for an HD install before without issues, but on a previous version - has something changed that I should have known about?

^thehatsrule^ Offline

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Joined: July 2006

Posted: Feb. 05 2007,20:01

Try editing /cdrom/boot/grub/devices.map

daldred

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Posts: 13
Joined: Mar. 2006

Posted: Feb. 05 2007,22:21

Quote (^thehatsrule^ @ Feb. 05 2007,15:01)

Try editing /cdrom/boot/grub/devices.map

/cdrom/boot doesn't exist (/cdrom is the cdrom iso extract - so it's got Knoppix and isolinux directories only for a loadlin boot. The actual cdrom image would have a boot directory, but that only contain the isolinux directory - even if this was a real cdrom /cdrom/boot/grub/ wouldn't exist).

I've tried editing /dev/hda6/boot/grub/device.map, but that has no effect on the error.

I also tried to mount /dev/hda6 onto / ; that still gave the same error when I tried to run grub-install. I then tried unmounting /dev/cloop - but /dev/cloop is busy (presumably being addressed by the system which is running from it!).

Aaargh..... Any ideas?

daldred

Group: Members
Posts: 13
Joined: Mar. 2006

Posted: Feb. 06 2007,09:24

Quote (daldred @ Feb. 05 2007,17:21)

Quote (^thehatsrule^ @ Feb. 05 2007,15:01)

Try editing /cdrom/boot/grub/devices.map

That proved to be the issue.

Although the loadlin boot instructions on the Wiki say to put isolinux at the same directory level as KNOPPIX (eliminating the /boot/ level), actual booting works with /boot still in place - and the HD install then works and installs the bootloader.

Once I've got this machine fully as I want it I'll post something about how it worked...

3 replies since Feb. 05 2007,18:47

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