grub.conf in centos 6.2

paruhang · 05-24-2012, 04:06 PM

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 directly.as i know, i have insert centos cd and run from rescue mode while trying to edit grub.conf such error occurs.

Code:

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.

ratotopi · 05-24-2012, 04:46 PM

Install Windows XP first then CentOS, it should solve the problem.

paruhang · 05-24-2012, 04:58 PM

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:

Code:

grub> root (hd0,0)
error 18: selected cylinder exceeds maximum supported by BIOS.

DavidMcCann · 05-25-2012, 12:14 PM

Searching for your error message on the internet reveals a lot of threads with possible answers to the problem:
http://ubuntuforums.org/showthread.php?t=1238739
http://www.gnu.org/software/grub/man...e2-errors.html
http://www.tuxradar.com/answers/234
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.