If you have forgotten your username as well, type: ls /home.The root account is the ultimate administrator and can do anything to the Ubuntu installation (including erase it), so please be careful with what commands you enter in the root terminal.In recent versions of Ubuntu, the filesystem is mounted as read-only, so you need to enter the follow command to get it to remount as read-write, which will allow you to make changes: mount -o rw,remount / In this case, you want the Drop to root shell prompt option so press the Down arrow to get to that option, and then press Enter to select it. After you select recovery mode and wait for all the boot-up processes to finish, you’ll be presented with a few options.From the boot menu, select recovery mode, which is usually the second boot option.Right after start target virtual machine (click inside virtual machine window) and press Shift key repeatedly until you will see the grub menu.Go to virtual machine’s ** Configuration-> Hardware Tab -> Boot Order.I want to reset my password in Ubuntu virtual machine.

Virtualbox ubuntu forgot password