I am fully backed up with Time Machine and use iCloud. I want to erase everything and reinstall from Time Machine. When I use Disk Utility, highlight my hard disk and check the erase tab, all options are greyed out.
MacBook Pro, OS X Mountain Lion (10.8.2)
Note that you have to start into OS X Recovery to erase the hard disk.
To do it, press Command and R keys while your Mac is starting, open Disk Utility and then, erase the disk. When it finishes, just close Disk Utility, choose the option to restore the Time Machine backup and follow the steps.
It's not possible to erase the hard disk while you are using it, so you have to start into OS X Recovery
Thanks. Maybe NOW I will be able to run JAVA since the last backup was prior to my latest Mac OS update.
If not, I'll be back! (grrrrrr)
You are welcome. If you have any problem with Java, just ask it
Thanks- Will do.
Why can't I erase my MacBook Pro?
