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I have an existing desktop with Windows XP. I have added another hard drive on which i have installed CentOS5. I have updated grub.conf as follows: # grub.conf generated by ...
  1. 05-12-2010 #1
    linram
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    Dual boot Windows XP and CentOS5

    I have an existing desktop with Windows XP. I have added another hard drive on which i have installed CentOS5. I have updated grub.conf 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/VolGroup00/LogVol00
    # initrd /initrd-version.img
    #boot=/dev/hda
    default=0
    timeout=20
    splashimage=(hd0,0)/grub/splash.xpm.gz
    #hiddenmenu
    title CentOS (2.6.18-164.15.1.el5)
    root (hd0,0)
    kernel /vmlinuz-2.6.18-164.15.1.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
    initrd /initrd-2.6.18-164.15.1.el5.img
    title CentOS (2.6.18-53.el5)
    root (hd0,0)
    kernel /vmlinuz-2.6.18-53.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
    initrd /initrd-2.6.18-53.el5.img
    title Windows XP
    map (hd0) (hd1)
    map (hd1) (hd0)
    rootnoverify (hd0,0)
    makeactive
    chainloader +1

    the hard drive mapping is : hd0 = hdc = CentOS
    hd1 = hda = WindowsXP
    I did this as I believe Windows likes to be the first hard drive.

    The desktop boots into the grub menu ok but on selecting WindowsXP I get a new screen with:
    title Windows XP
    map (hd0) (hd1)
    map (hd1) (hd0)
    rootnoverify (hd0,0)
    makeactive
    chainloader +1

    and a flashing cursor

    I am not sure what to do next. If I remove the new hard drive the machine boots into WindowsXP so the I am not getting to the Windows bootloader from CentOS.

    Advise please.
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  2. 05-12-2010 #2
    devils casper
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    Hi and Welcome !

    If GRUB Menu appears at startup, it means Machine is booting up from CentOS Hard disk and Windows OS is Secondary disk.
    Edit Windows XP title block in grub.conf
    Code:
    title Windows XP
rootnoverify (hd1,0)
map (hd0) (hd1)
map (hd1) (hd0)
chainloader +1
    It is amazing what you can accomplish if you do not care who gets the credit.
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  3. 05-12-2010 #3
    linram
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    Quote Originally Posted by devils casper View Post
    Hi and Welcome !

    If GRUB Menu appears at startup, it means Machine is booting up from CentOS Hard disk and Windows OS is Secondary disk.
    Edit Windows XP title block in grub.conf
    Code:
    title Windows XP
rootnoverify (hd1,0)
map (hd0) (hd1)
map (hd1) (hd0)
chainloader +1
    Works perfectly! Thanks
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