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Old 05-24-2012, 05:06 PM   #1
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grub.conf in centos 6.2

hi everybody,
i have problem installing centos and windows. first i installed centos in my laptop and windows xp but i was not able to boot centos. windows will open i know, i have insert centos cd and run from rescue mode while trying to edit grub.conf such error occurs.
grub> root (hd0,0)
error 18: selected cylinder exceeds maximum supported by BIOS.
can anybody guide me how to fix problems, i'll be greatful any kinds of ideas suggestions are welcome.

Last edited by paruhang; 05-24-2012 at 05:59 PM.
Old 05-24-2012, 05:46 PM   #2
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Install Windows XP first then CentOS, it should solve the problem.
Old 05-24-2012, 05:58 PM   #3
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thank you ratotopi,
for your quick reply, i have installed more than 4 times. first i installed centos and windows and i edit grub.conf so i was able to boot centos or windows xp on my choice but this time when i try to edit grub such error occurs:

grub> root (hd0,0)
error 18: selected cylinder exceeds maximum supported by BIOS.
Old 05-25-2012, 01:14 PM   #4
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Searching for your error message on the internet reveals a lot of threads with possible answers to the problem:
It seems that it could be anything from the size of your disk to a faulty cable or corrupted BIOS.

If you install Windows first and then CentOS, I don't think you should have to do anything to grub: CentOS should see the Windows installation and set up grub for you.


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