To save information to your computer, as well as being able to download items to your computer.
The harddrive is the size of a standard notebook harddrive not a PC size harddrive. So you can not fit it in the smaller spot required for the notebook size harddrive
You do not download the disc to harddrive you must purchase the game at the PlayStation store as a download to download the game to harddrive
depends on several factors- 1) if there is any data on that harddrive you need, TAKE OUT THE HARDDRIVE. 2) if the harddrive is less than 120 GB, and the above is not true, GET RID OF IT. 3) if the harddrive is working, and number 2 is NOT true, KEEP IT. A working harddrive of decent size is always helpful to have around.
A PS3 harddrive is a standard size notebook harddrive and are only worth the amount of a used laptop harddrive of the same GB size. The $50 extra currently being charged for the 320 GB harddrive is about value of a new 160 GB harddrive so a used 120 GB harddrive would be worth much less.
If you want to do your own harddrive recovery, you will need proper software to do it. Go online and download harddrive recovery software and try that. Hopefully, it will not need to be replaced.
PS3 has a Harddrive which you can change with a standard laptop harddrive
I would recommend buying a USB hard drive enclosure that will fit your harddrive.
On an internal HardDrive, or split across several DVDs
When it ask you if you wanna Save the game it'll ask you were and you pick harddrive.
No. They are not copied to the computer's harddrive. Just the destination drive gets the files.
PS3's have been designed to allow the harddrive to be replaced with standard notebook size harddrives. You can increase the size of the current harddrive or you can replace the PS3 with a new model with a larger harddrive.
No once updated it is permanent and I don't believe even a harddrive replacement can restore it. You also can put a smaller size harddrive in any PS3 and it will be the same model with a smaller harddrive and not a different model