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Change the boot sequence and waiting time in Grub2 January 16, 2012

Posted by viboon in : Ubuntu , add a comment
sudo gedit /etc/default/grub

See GRUB_DEFAULT and GRUB_TIMEOUT for altering the order and timeout. After the changes, please update the grub by using

sudo update-grub

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Recovering Grub 2 after installing other OS April 10, 2010

Posted by viboon in : Ubuntu , add a comment

Boot with live CD and enter the below command in the terminal.

mount | tail -1

You will get something like this:

/dev/sda2 on /media/0d104aff-ec8c-44c8-b811-92b993823444
type ext4 (rw,nosuid,nodev,uhelper=devkit)

Install grub to the mounted drive.

sudo grub-install --root-directory=/media/0d104aff-ec8c-44c8-
b811-92b993823444 /dev/sda

Finally, update grub.

sudo update-grub2

Ref: https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows

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Removing Ubuntu or any OS from Windows Boot Manager October 30, 2009

Posted by viboon in : MS Windows, Ubuntu , add a comment

In Windows:
1. Run “cmd” as Administrator
2. type “bcdedit.exe”. This will list all of the OS that start up in Windows Boot Manager
3. Enter the command bcdedit.exe/delete {OS ID}, for an example:

bcdedit.exe/delete {802d5e32-0784-11da-bd33-000476eba25f}

Ref: http://ubuntuforums.org/showthread.php?t=829466

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Using Windows Boot Manager or GRUB for Windows(Vista)-Linux system October 30, 2009

Posted by viboon in : MS Windows, Ubuntu , add a comment

By installing more than one OS, boot loader will play a significant role to assist and manage the system booting. Basically, the type of applied boot loader follows the last installed OS. For instance, GRUB will take place when Ubuntu is installed after Windows, and Windows Boot Manager will be vice versa. However, we can change the boot loader to be the one we want without reinstalling the OS(s) in a proper sequence. Clearly, only boot loader will be reinstalled separately into the Mater-boot record (MBR).

This article will give you the procedure to reinstall the boot loader which is no matter what OS is installed before or last.

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