I had trouble with applications just crashing and not opening. they would just immediately close. so I reboot and it wont boot. so I go into recover to reinstall and the reinstall keeps failing right at the end. I checked with disk utility and it showed the disk as corrupt. so I try and run the repair and the repair says its fixed. but when i scan it again it says its still corrupt. so I wrote zeros to the entire drive then did internet recovery. this worked and i had a semi working copy of lion on it. some install updates would outright fail while trying to install. so now i said i need to upgrade to mountain lion. ran the mountain lion installer and it failed. again. sigh. back to no working os. so i go in to disk utility to see if the drive was corrupt again and this time the entire drive does show up in the list. it just shows a 1g recovery that i cant connect to on boot. I dont know what to do now since there is no drive showing for me to reinstall or format. is it dead?