Hadoop Disk Repair Guide

1. In the Grub Boot Maske press "Escape" (Once!)
2. Key "E" for Edit (1. offered kernel)
3. Move down one line, key word kernel, again "E" for Edit, at the end of the line enter kernel parameter init=/bin/sh, press Return to conclude Edit operation
4. Boot by pressing key "B"
5. At Root Prompt enter PATH=$PATH:/sbin:/usr/sbin
6. fsck.ext4 -f -y /dev/sda1
7. fsck.ext4 -f -y /dev/sda3
8. mdadm --assemble /dev/md0
9. fsck.ext -f -y /dev/md0
10. Reboot by pressing CTRL-Alt-Del (reboot or shutdown don't work!)