HOWTO: Restore GRUB (if your MBR is messed up)

Restoring GRUB (the GRand Unified Bootloader) is quite simple in Ubuntu; instead of going through all of the "gain root access" steps, and playing with confusing shell commands, you can simply use the Ubuntu installation CD (the alternate version if you use dapper) to restore it without going through all of the previous hassles.

[edit]

Here are the steps

1. Boot your computer with Ubuntu CD.
2. Go through the install process until you reach "[!!!] Disk Partition."
3. Select Manually Partition.
4. Mount the appropriate linux partions:
   /
   /boot
   swap
   DO NOT FORMAT THEM
5. Finish the manual partitioning.
6. Select "Yes" when it asks you to save the changes.
7. It will give you errors saying that "The system couldn't install ....." after that; ignore them. Proceed with selecting "continue" until you get back to the Ubuntu installation menu.
8. Jump to "Install GRUB."
9. Once it is finished, simply restart your computer.

Good luck!

keep learning

No matter where u r,u need 2 keep learning,for ur primary purpose is to defeat urself.actually,there are too much knowledge to learn,we are just a tiny bottle in a huge sea,u had to make a decesion that what's most suitable for u.
reading,remembering,understanding,reviewing...but,the fact is we don't have so much time to track it.it's amazing that I can afford it,isn't it?

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another step.