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How to recover GRUB without use LIVE CD

11.05.16

  17:05:00 by admin, Categories: GRUB GestoR Unified Boot

many times , grub 2 is a boot manager , it come by default with many distributions LINUX, and it in a moment not operate, why ?

the major cause is maybe, it try boot from fail device or simply not exist or setting bad.

I am going to show how fix this problem.   the messages is showing with the following text

 ENTERED RECUE MODE

root rescue >

 

Primero accedé a la lista de particiones disponibles:


those steps are leaded toward centos

////////////////77
chroot /mnt/sysimage
ls /dev/sd*
s /sbin | grep grub2  # Identify GRUB installation command
# /sbin/grub2-install /dev/sda  # Install the boot loader in the boot partition of the first hard disk


grub> root (hd0,0) or  (hd0,1) , look at fileystem for selection  (ls /dev/sd*)
root (hd0,0)
Filesystem type unknown, partition type 0xfd


grub> setup (hd1)
Checking if "/boot/grub/stage1" exists... no
Checking if "/grub/stage1" exists... <- here it usually hangs, but sometimes I get a no.

/////////////////

 

 

 

https://www.tecmint.com/recover-or-rescue-corrupted-grub-boot-loader-in-centos-7/

source link :  http://blog.desdelinux.net/como-recuperar-grub-2-sin-utilizar-un-live-cd/

https://feeding.cloud.geek.nz/posts/reinstalling-grub-on-unbootable-debian/

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