Restore the Ubuntu boot menu

Introduction

Windows is often reinstalled when two systems are used! Is there a way to reinstall Windows without Ubuntu?

This problem is well solved when Windows xp/Ubuntu is used! However, it is difficult to use Windows 7 (including Vista) or above!

Because Microsoft has changed the OS startup mechanism! For details, see bootmgr and Bcdedit (Baidu encyclopedia)

For more information, see install Ubuntu12.4 in Windows 7 (x64).

Tool: EasyBCD

1. Set the Win7 boot guide Ubuntu1. Add the Win7 boot item

2. Set OS parameters to boot

Initiator type and disk

Select GRUB 2

Select Ubuntu system partition

(1) Add a boot item; (2) view settings

3. Restart the PC and enter the boot entry.

Set up (first boot: Win7; second boot: Ubuntu)

Restart and go to "NeoSmart Linux ".

2. Set Ubuntu boot Win71. install Grub to the hard disk

Sudo grub-install/dev/sda

Note: The first hard disk in the Ubuntu partition is sda, and the second partition is sdb... and so on.

2. Update the Grub boot menu

Sudo update-grub

Reference article: 1. Grub2/Installing (Reinstalling GRUB 2-Reinstalling GRUB 2 from a Working System) implements failover