1. Boot with gparted
2. cd /tmp
3. mkdir test
4. mount /dev/sda1 /tmp/test
5. chroot /dev/test /bin/bash
6. Change:
/etc/passwd:
root:x:0:0:root:/root:/sbin/nologin
admin:x:591:503::/home/admin:/usr/local/platform/bin/cliscript.sh
to:
root:x:0:0:root:/root:/bin/bash
admin:x:591:503::/home/admin:/bin/bash
/etc/shadow
root:!!:14657:0:99999:7:::
to:
root:$1$D2ISXWJF$urnCHPxcF20BUWWwvTZfX0:14657:0:99999:7:::
/etc/sudoers
add the Line for admin under the user privilege specification so that it looks like this:
# User privilege specification
root ALL=(ALL) ALL
admin ALL=(ALL) ALL
7. exit
8. cd /tmp
9. umount /tmp/test
10. umount /dev/sda1
11. reboot
12. login with admin and your password, you are in the bash shell, not in the cisco cli anymore
13. enter sudo su and your login password and you become root