so I booted up an old Linux Mint machine today and I can't seem to remember the password. So I wanted to reset the password using the instructions on Mint's website but when I hold shift the GNU GRUB boot menu does not seem to come up. It just asks me for my password then shows me the login screen.To clarify, I know the system password but not the login password.I initially assumed it was because I was using a USB keyboard at first but that does not appear to be the problem as it is recognizing the keyboard immediately and I can enter Bios. Any help would be appreciated.Password Reset Page - http://community.linuxmint.com/tutorial/view/339
Can't enter GNU GRUB boot menu!
linux mint;login;keyboard;password
You have to download in other machine a live distro (if you have 64bit , download 64 and if you have 32bit download 32 bit), Then step by step do the following steps:Boot with your live cdcreate a dirmount your old linux on your dirchroot dirNow , you have old linux and you can change password, and manipulate grub and run grub-install