Originally posted by TheBestModzHD
wont that take off JB?
What? Rebuild filesytem (Actually it is Restore File System) no, that is just similar to CHKDSK on a PeeCee. As long as you do not do a system update you will not lose your JB. You can even replace the hard drive without losing a JB (although you do need to reinstall your CFW if you do)
Restore File System is the same thing your PS3 does after it detects an improper shut down. You could also try rebuild database, you will lose all your messages so save them if you want to keep them if you do that.