Install grub damaged by windows (Ubuntu)

Because the Ubuntu installation CD does not have the rescue mode, many friends may be confused about Reinstalling grub. In fact, the live mode of Ubuntu itself is an enhanced version of rescue. Start the CD, enter the liveCD mode, open the terminal, and enter the command: sudogrub (sudo is required here, friends who used to use the rescue mode will get used to the fact that they are super users and forget this one. As a result, the root command will never be executed successfully.) root (hdx, y)

Because the Ubuntu installation CD does not have the rescue mode, many friends may be confused about Reinstalling grub. In fact, the live mode of Ubuntu itself is an enhanced version of rescue.

Start the CD, enter the liveCD mode, open the terminal, and enter the command:

Sudo grub

(Sudo is required here. Friends who used to use the rescue mode will get used to entering the system as a Super User and forget this one. As a result, the root command will never be executed successfully)

Root (hdx, y)

(The hard disk partition of your/boot directory is in brackets. If you are not clear about it, you can use find/boot/grub/stage1 to find it)

Setup (hd0)

OK! Your grub has been retrieved!