Reinstallation of grub in Linux-general Linux technology-Linux technology and application information. For details, refer to the following section. If your computer is a dual-system (Windows + Linux), grub will be reinstalled every time the Windows system is reinstalled. If a friend asks this question today, I will paste the specific steps here, we hope to provide you with some convenience.
1: insert the Linux system installation disk and start the computer in disc startup mode.
2: in Terminal/command line mode: sh # sudo grub
3: in Terminal/command line mode: grub> root (hdx, y)
Here, x and y represent the disks and partitions of the Linux system. If you are not clear, you can query the/boot/grub/menu. lst file or enter the hd file and use the Tab.
4: in Terminal/command line mode: grub> setup (hdm, n)
Generally, enter setup (hd0) here. If you want to install grub to a custom disk and partition, enter m and n.
If the execution is successful, the screen will display: successful ......
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