Hi, I am trading in my iMac and successfully erased my hard drive.
However in Disk utility I see there is a MacOS Base system disk image volume which has 1.2 GB/2 GB of data. Should I erase this as well before trading in?
You should format it (totally), but it should be in another mac:
3. Type diskutil secureErase <level of erasing> <disk name>
Level of erasing:
0 - Single-pass zeros.
1 - Single-pass random numbers.
2 - US DoD 7-pass secure erase.
3 - Gutmann algorithm 35-pass secure erase.
4 - US DoE 3-pass secure erase.
The more the "levels", the harder chance to recover it.
Using this will make traded much harder to recover data (it is also recommended in SSD although Apple said it is unnecessary).
No, and you can't. It's part of Apple's Internet Recovery system and can't be erased from your end.
(172385)
Don't do that!!!! I have make a mistake!!! Read the comment below please
I haven't thought about that (-.-)
Thanks Niel. I will leave it alone and send the computer off for trade in.
Trading in iMac- erase macOS Base System Disk Image Volume?
