This article provides step-by-step instruction on how to break GRUB password on VMwre VCSA 6.x. Attach live Linux distro to the VCSA VM and boot the VM on the live Linux image. For the purpose of the manual, I use Knoppix v7.0.5.
Start Knoppix live in single user mode by invoking the following command:
boot: linux single
Once the system has booted, mount /dev/sda1 under /mnt:
# mount /dev/sda1 /mnt
Edit menu.lst file:
# vim /mnt/grub/menu.lst
and remove the password line that looks like:
password --md5 $5$adkjhsdk/nadjkfku473u
Save and close the file. Reboot the system:
# sync; sync # cd / # umount /mnt # reboot