SQL Database doesn’t work right

Hi Everyone!
The problem follows. I decided myself to add space to one section. Booted from LiveCd, launched gparted, pitched wrong.

After rebooting fell lilo, but to this I was ready and fixed the problem, but what was not ready, so this is a fact that is impossible to start mysql.

Digging in his logs showed that the problem in the database itself. If you delete a folder with the base and through the mysql_install_db script to re-do, then run mysql, but how to restore the old one?

And as a rhetorical question – why it stopped working due to actions which not directly associated with it?
Can provide (if necessary) the error log.