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How to access hidden GRUB in Xubuntu

rated 0 times [ 0] [ 0] / answers: 1 / hits: 4446 / 1 Year ago, tue, december 27, 2022, 9:41:46

I have recently installed Xubuntu 12.04 alongside Windows XP. My parents don't use Xubuntu, so I configured the GRUB file as written in some articles. I changed:

GRUB_DEFAULT= 4 #Assuming Windows is the fifth menu entry

GRUB_TIMEOUT=0

GRUB_HIDDEN_TIMEOUT=0

Now whenever I press and hold the Shift key it says GRUB loading, but does not show GRUB and boots directly into XP. How can I access grub.cfg to change the settings so I'll have correct settings?

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breadoules

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answered 1 Year ago amencisiv · Accepted Answer

You should be able to boot from the xubuntu CD in live CD mode - then you can mount the / or /boot file system and make the changes you need to make.

Alternately you can boot the system rescue CD (http://www.sysresccd.org/) and do the same.

The tricky part of this is working out which disk partition has /boot on it.

Once you have started xubuntu in Live CD mode open a terminal and use sudo to get a root shell. Alternately, boot the system rescue CD and it will drop you in a root shell.

Then look in /dev for files like sda1 sda2 sdb1 etc.

Try mounting each in turn:

# mount /dev/sd1 /mnt

# ls /mnt

# umount /mnt

If mount gives an error, ignore that partition. If ls /mnt shows a directory called boot, then look in there for the files you have to change to reconfigure grub.