no linux after reboot

[Grant Allan]

> If you would, we prefer bottom posting here.  See
>
> http://en.wikipedia.org/wiki/Top-posting
>
> I'll reorder this.
>
> On Fri, Dec 09, 2005 at 11:53:29AM +1300, Grant Allan wrote:
>> > Boot your CD 1 to rescue mode (put "linux rescue" at the boot prompt).
>> > Let it mount your system on /mnt/sysimage.  At the prompt, do this:
>> >
>> >   chroot /mnt/sysimage
>> >   cat boot/grub/grub.conf
>> >
>> > See to it that it created a decent grub.conf similar to mine:
>> >
>> > default=0
>> > timeout=5
>> > splashimage=(hd0,0)/grub/splash.xpm.gz
>> > hiddenmenu
>> > title Fedora Core (2.6.14-1.1644_FC4)
>> >         root (hd0,0)
>> >         kernel /vmlinuz-2.6.14-1.1644_FC4 ro root=/dev/bobcatvg/root1
>> >         initrd /initrd-2.6.14-1.1644_FC4.img
>> >
>> > Yours will have different details but the same structure.  Then
>> >
>> >   grub-install /dev/hda
>> >   exit
>> >   exit
>> >
>> > Yes, exit twice - once out of the chroot and once out of the rescue
>> > shell, and it will reboot.
>> >
>> > Pop out the CD and it should boot linux.
>> >
>> > Cheers,
>> > --
>> > Bob McClure, Jr.
>>
>> hi,
>>
>> i have some more news: grub.conf looks OK to me.
>> but grub-install generates an error as follows:
>>    /dev/hdd1 does not have any corresponding BIOS drive
>>
>> does that maybe mean that i should jump into BIOS and get it to
>> autodetect
>> my hard drives?  i forgot to do that yesterday.
>
> It's probably already doing that.  It's unrelated.
>
>> cheers,
>> grant
>
> Just another detail to take care of what the installer missed.  After
> you have chrooted to /mnt/sysimage, edit /boot/grub/device.map to add
> the line
>
> (hd3)     /dev/hdd
>
> assuming "hd3" is not mapped to some other device.  Note that in
> grub.conf, numbering starts at 0, not 1.  Then do the grub-install
> thing.  If that doesn't work, you may need to tell us more about the
> drive and partitioning arrangement, and post grub.conf, if you can.
>
> Cheers,
> --
> Bob McClure, Jr.             Bobcat Open Systems, Inc.
> robertmcclure at earthlink.net  http://www.bobcatos.com
> Peace at any price is inflationary.
>
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>

Hi,

Yay, I'm no longer getting windows!  Furthermore, I have learned today
about bottom posting.

However, I now have the following on rebooting my machine:

GRUB Loading stage1.5
GRUB loading, please wait...
Error 21

To make sure I tell you the right stuff regarding partitions & disks,
please can you tell me if there is a way to query for this info (e.g.
using linux rescue)?

I have both put old and new hard drives on the one ribbon, but by my
understanding that doesn't add up with the name /hdd, so I'd like to find
out for sure.


Thanks again,
Grant