Grub Issue

g geleem at
Tue Oct 14 21:11:16 UTC 2008

Hash: SHA1

Joseph L. Casale wrote:
> I'll try this when I get home. What is bizarre is that it doesn't even
> begin the grub timeout, it boots almost immediately into Windows?

'windows' may be first 'title' and timeout=0, if grub is installed.
see example below.

to check that it is installed, run from a command line;

  dd if=/dev/sda of=bootsector.hex bs=512 count=1

open 'bootsector.hex' with a hex editor and look around byte 0x17f for
word 'grub' to insure grub is loaded. if you see 'microsoft' anywhere,
grub is not loaded.


Amy Kelly wrote:
> OK, thanks.I'll do that tonight and see if that works.

example of a grub.conf:

default=0    ## default to *first* 'title'
timeout=5    ## time delay in seconds for auto boot
hiddenmenu   ## hide menu from screen view
title Scientific Linux SL (2.6.18-92.1.13.el5)
  root (hd0,0)
  kernel /boot/vmlinuz-2.6.18-92.1.13.el5 ro root=LABEL=/ rhgb quiet
  initrd /boot/initrd-2.6.18-92.1.13.el5.img
title Scientific Linux SL (2.6.18-92.1.10.el5)
  root (hd0,1)
  kernel /boot/vmlinuz-2.6.18-92.1.10.el5 ro root=LABEL=/1 rhgb quiet
  initrd /boot/initrd-2.6.18-92.1.10.el5.img

in above;
 'title'  = what is displayed in menu when shown
 'root'   = root of system being booted
 'kernel' = kernel to be loaded
 'initrd' = image to use
 'rhgb'   = redhat graphic boot
 'quiet'  = quiet mode, do not show all of boot info

for less terse description of grub boot loader, see:

to select your choice of manual.

- --


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'Rute User's Tutorial and Exposition'
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