help dual-boot CentOS 5/ WinXP
I installed WinXP on a spare hd by temporarily disconnecting hd0 and connecting hd1 in its place. It installed and booted, and then I was ready to switch back to CentOS 5 on hd0 and WinXP on hd1.
I reconnected hd0 as primary, /dev/hda, and hd1 as /dev/hdc. I added an entry to grub.conf to boot WinXP as follows;
# grub.conf generated by anaconda
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/hdc1
# initrd /initrd-version.img
title CentOS 5 (2.6.18-8.1.15.el5)
kernel /vmlinuz-2.6.18-8.1.15.el5 ro root=/dev/hda3 rhgb quiet
title CentOS 5 (126.96.36.199-al)
kernel /vmlinuz-188.8.131.52-al ro root=/dev/hda3 rhgb quiet
title Windows XP Home Edition
This much is correct, I think. Now, I'm pretty sure I need to edit the boot.ini file to account for the change from windows thinking it is mounted on hd0 to actually being mounted on hd1. This is the current boot.ini;
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /noexecute=optin /fastdetect
C:\ = "Unidentified operating system on drive C."
I'm not sure how this needs to be modified. Also, I'm mystified by the last line, C:\ = "Unidentified operating system on drive C.". When the only hd connected was hd1 in the hd0 spot, WinXP booted and ran just fine, with no errors. So, I don't know if I need to be concerned about this or not. But, until I get the necessary editing done to at least get it to start to boot, I won't know about this last line.
So, first things first. Does anyone know how this boot.ini file should be modified? Thanks for any help.
With both drives attached and booted into CentOS (which is out of date by the way) as root type something along the lines of;
/sbin/grub-install --recheck /dev/hda1
And also see this: http://www.redhat.com/advice/tips/dualboot.html
Use fdisk -l (that is the lower case letter 'L' in the command) to verify before making any changes.
Thanks, Lenard. Your link provided the answer.
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