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Old 03-04-2004, 03:27 AM   #1
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Registered: Feb 2004
Location: California
Distribution: Red Hat 9.0
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Question Booting to New Kernel using Boot Disk


I have windows 2k on the master hd and red hat 9.0 on the slave hd. I use a linux boot disk to boot up from the floppy drive.

Recently, the red hat updater says that I have an updated kernel version that I should try to boot to. How do I do this?

I don't want to install any bootloader onto the windows master hd. I want to either boot from the linux hd or use the boot disk.

When I use the boot disk, it says that I can enter "linux <parameters>" What kind of parameters can I enter there? I tried typing the latest kernel version, but i guess that's not the correct parameters.

On the other hand, I tried configuring the bios to boot from the slave drive. The only thing that shows up is "GRUB". I don't see a ">" prompt at all. Should I wait a while for this prompt to show up?

Anyways, my goal is to boot into the latest kernel without touching anything from the master hd. Second, I want to create a boot disk that would use the latest kernel. How do I do this?

Your help is much appreciated!

Old 03-04-2004, 05:40 AM   #2
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Registered: Jul 2003
Location: Indiana
Distribution: Mandrake Slackware-current QNX4.25
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Before you upgrade do this:
dd if=/dev/hda of=/boot/boot.hda bs=512 count=1
This makes a copy of the MBR of your master drive. If it gets messed up you can restore it like this:
dd if=/boot/boot.hda of=/dev/hda
Or just this
cat /boot/boot.hda >/dev/hda

If you want to make a bootdisk:
mkbootdisk /dev/fd0 X.Y.Z
Where X.Y.Z is the version number of the new kernel.

If you want to learn all about boot parameters then read the Linux Bootprompt HOWTO at


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