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Old 08-17-2003, 08:10 PM   #1
Registered: Feb 2003
Location: Hinsdale/Chicago, IL, USA
Distribution: Slackware 10 (
Posts: 43

Rep: Reputation: 15
problem with booting to new kernel (2.4.21) with Grub

I have Redhat 9 currently installed, and for some reason my mobo (ASUS P4T-E) doesn't like the floppy driver being built into the kernel, so I had to rebuild it making it a module, however the source for kernel 2.4.20-19.9 that comes with RH 9 won't recompile, keeps giving me errors that header files are missing. So I downloaded 2.4.21 from and attempted to compile it, which I was able to do, however at boot time it doesn't like it, here is my grub.conf

# grub.conf generated by anaconda
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,1)
# kernel /boot/vmlinuz-version ro root=/dev/hdb2
# initrd /boot/initrd-version.img
title Red Hat Linux (2.4.20-19.9)
root (hd0,1)
kernel /boot/vmlinuz-2.4.20-19.9 ro root=LABEL=/ hda=ide-scsi
initrd /boot/initrd-2.4.20-19.9.img
title Linux (2.4.21)
root (hd0,1)
kernel /boot/bzImage vga=791 root=/dev/hdb2 read-only
title Windows XP
rootnoverify (hd0,0)
chainloader +1

for some reason my linux partition /dev/hdb2 is not being recongnized, it has been extremely frustrating, and I don't know if it is seeing it at boot time, all I see is my cdrom hdc and my zip hdd, and I have built ide support into the new kernel. please help...

-Frustrated 5 year newbie
Old 08-17-2003, 08:52 PM   #2
Senior Member
Registered: May 2003
Location: Sydney, Nova Scotia, Canada
Distribution: slackware
Posts: 4,185

Rep: Reputation: 59
you didn't specify the path to initrd for linux 2.4.21 and you say your cdrom is hdc, so why are you passing hda=ide-scsi? and are you running /sbin/grub-install after making changes?
Old 08-17-2003, 11:36 PM   #3
Registered: Feb 2003
Location: Hinsdale/Chicago, IL, USA
Distribution: Slackware 10 (
Posts: 43

Original Poster
Rep: Reputation: 15
as for the initrd is that a must have? It's just a ram disk right? The first kernel was installed for me by the redhat installer, I have no clue why it is passing hda=ide=scsi I just left it as is, being that it boots properly, again I'm still very much a newbie, why would the rh installer put that there?
Old 08-18-2003, 12:29 AM   #4
Senior Member
Registered: Aug 2003
Location: UK
Distribution: Debian SID / KDE 3.5
Posts: 2,313

Rep: Reputation: 47
you've just got bzimage down for your kernel file?
Is that what you compiled it too?

this is my current Grub entry for linux.

title GNU/Linux 2.4.21-sorsha
root (hd0,4)
kernel /vmlinuz-2.4.21-sorsha1 root=/dev/hda6 vga=10 /dev/hdd=ide-scsi

if you CD to /boot and look around there should be a vmlinuz a and possibly a config file with version that match your new compiled version.

I also have no initrd. the ide-scsi bit is for CDRW's

Last edited by leonscape; 08-18-2003 at 12:30 AM.


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