John R Pierce a écrit :
in a nutshell, you boot the linux CD into 'linux rescue mode', then the usernames are in the /etc/passwd file on the mounted hard drive, which is I believe mounted as /a, so it would be /a/etc/passwd, and the passwords themselves are encrypted in /etc/shadow ... its easiest to edit /etc/shadow (probably as /a/etc/shadow due to the rescue mount), then just zap out the password field.
You can even do it without the CD.
At the GRUB command line, add this to the kernel= line :
init=/bin/bash
This gets you to a bash prompt without asking for a password. From there, you mount the root partition in r/w mode :
# mount -o remount,rw /
Now you can reset your password :
# passwd
Since the system wasn't booted in a very orthodox way, we have to shut it down a bit differently.
# mount -o remount,ro /
Now simply press the power button to switch the machine off.