Re: Unable to boot into CompactFlash card - card not found by initrd

[Michael Lange <klappnase@freenet.de>]

Hi,

thanks for the reply.

Thus spoketh Scott Ferguson <prettyfly.productions@gmail.com> 
unto us on Wed, 18 Jan 2012 11:23:35 +1100:

> 
> At the grub prompt hit 'e' to enter edit mode.
> What where does GRUB expect the root to be? (should not be hd0, probably
> should be hd1,1).

the grub.cfg entry:

menuentry 'CFcard' --class debian --class gnu-linux --class gnu --class
os { insmod part_msdos
   insmod ext2
   set root='(hd0,msdos1)'
   search --no-floppy --fs-uuid --set 7329bb28-71ea-4060-96a1-accaeef453f5
   echo   'Loading Linux 2.6.32-5-686 ...'
   linux   /vmlinuz-2.6.32-5-686 root=LABEL=CFCARD ro
   echo   'Loading initial ramdisk ...'
   initrd   /initrd.img-2.6.32-5-686
}

where both (hd0,msdos1) and 7329bb28-71ea-4060-96a1-accaeef453f5 point
to /boot on /dev/sda1.
The grub menuentry was one of my first suspects, too, especially as I am
not familiar with grub2 at all and good docs on it are hard to find. I
admit that I don't know what the "set root=..." line does at all, when I
change it into set root='(hd1,msdos1)' or '(hd1,1)' I can't see any
difference. However, when I edited the grub.cfg entry the same way I
could boot an usb flash drive, so I think it is ok, and the final error
message when booting fails is:

    ALERT! /dev/disk/by-label/CFCARD does not exist. Dropping to a shell!

So apparently linux looks up the right place but does not find it, no
wonder as there is no /dev/hda and none of the boot messages indicating
the CF card has been recognized is seen.

Regards

Michael


.-.. .. ...- .   .-.. --- -. --.   .- -. -..   .--. .-. --- ... .--. . .-.

When a child is taught ... its programmed with simple instructions --
and at some point, if its mind develops properly, it exceeds the sum of
what it was taught, thinks independently.
		-- Dr. Richard Daystrom, "The Ultimate Computer",
		   stardate 4731.3.