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| Synopsis: The purpose of this document is to provide a general rescue method without the need for the Mageia boot medium. This procedure will interrupt the boot process in a very early stage, and starts a rescue environment. This method can be used to repair things, reset your password etc. Of course, it only works if the boot-loader is still available and you can select a working kernel (if one fail, try another in the menu). |
Contents
Mageia Boot Menu
Boot your system. In the Mageia Boot menu, press e to edit the Mageia entry. Move your cursor to the line that starts with:
| linux16 /boot/vmlinuz.... |
Remove the words "splash" and "quiet" and add:
| rd.break |
Press ctrl+x to boot
Root Filesystem
You are now in the rescue shell, press ctrl+l to clear the screen.
Execute: findmnt /sysroot
Normally the root filesystem of your installation is mounted on this directory. But it's mounted read-only, remount it:
| mount -o remount,rw /sysroot |
Check if there is content in /sysroot/boot.
If not: you have to mount the filesystem that contains your kernel and bootloader configuration. This is probably on /dev/sda1.
The command cat /proc/partitions can give you some hints, it is normally located on a small filesystem.
| mount /dev/sda1 /sysroot/boot |
Binds
In the rescue environment, you'll probably need access to devices, filesystems, hardware information, and processes. Bind the /dev, /sys and /proc directories in /sysroot
| mount --bind /dev /sysroot/dev mount --bind /sys /sysroot/sys mount --bind /proc /sysroot/proc |
Chroot
Now you can change from the root filesystem of the rescue shell to the root filesystem of your installation
| chroot /sysroot |
And you have full access to your installation
Example: reset root password
As an example of what you can do now, execute:
| passwd |
Your root password is changed!
Exit
Press ctrl+d to exit to the root filesystem of the rescue shell
Press ctrl+d again to reboot the system.
