notes/recovery.txt at master · tr0nucf/notes · GitHub

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recovery

Linux

Repair discs
Hirens Boot CD
https://downloads.tomsguide.com/Hiren-s-Boot-CD,0301-51033.html
boot-repair-disc
https://sourceforge.net/projects/boot-repair-cd/?source=directory
*alt
	sudo add-apt-repository ppa:yannubuntu/boot-repair
	sudo apt-get update
	sudo apt-get install -y boot-repair && boot-repair
	launch Boot-Repair:
		>boot-repair
		click "Recommended repair"
		When repair is finished, note the URL (paste.ubuntu.com/XXXXX) that appeared on a paper, then reboot and check if you recovered access to your OSs.

If the repair did not succeed, indicate the URL to people who help you by email or forum.

GRUB
>bootrec /fixmbr
>sudo update-grub
sudo grub-install /dev/sda
	grub rescue >
		ls
		ls (hd0,msdos1)/
		set prefix=(hd1,msdos1)/boot/grub
		insmod normal
		normal

fsck
>*backup first*<
>dd if=/dev/sda2 of=/disk2/backup-sda2.img
e2fsck
>e2fsck -f /dev/sda3
>mke2fs -n /dev/sda3
>dumpe2fs /dev/sda3|grep -i superblock
>e2fsck -f -b 8193 /dev/sda3