MacBook Air 2017
Mac OS Monterey
I connected an HDD to my MacBook Air using a Sata to USB 2.0 cable. The HDD had a bootable Windows 10 or Windows 7 install on it. The drive had sat for a looong time without power (maybe 3 years).
The 2 partitions for this HDD were visible on my desktop. The first partition was a 500 MB EFI or maybe MBR partition. The rest of the drive is a single partition, probably NTFS. (As an aside, I viewed the top level folders on the NTFS drive-- maybe 7 or so folders, I think that 2 were program file folders.)
I opened Disk Utility and I selected the larger partition and I chose "erase."
I chose to format the drive as HFS+ (OSX Extended Journaled).
There are options of how securely you what to erase what is already on the disk, I chose 1 level up from the weakest. This means that Disk Utility will overwrite what is on the disk 2 times.
Then I let it start the process. I immediately got this error
Disk Utility Couldn't open disk -69879
Next, I tried the same thing on the 500MB partition. Same result.
Now, neither of the partitions show in disk utility (or on the desktop).
Mac OS Monterey
I connected an HDD to my MacBook Air using a Sata to USB 2.0 cable. The HDD had a bootable Windows 10 or Windows 7 install on it. The drive had sat for a looong time without power (maybe 3 years).
The 2 partitions for this HDD were visible on my desktop. The first partition was a 500 MB EFI or maybe MBR partition. The rest of the drive is a single partition, probably NTFS. (As an aside, I viewed the top level folders on the NTFS drive-- maybe 7 or so folders, I think that 2 were program file folders.)
I opened Disk Utility and I selected the larger partition and I chose "erase."
I chose to format the drive as HFS+ (OSX Extended Journaled).
There are options of how securely you what to erase what is already on the disk, I chose 1 level up from the weakest. This means that Disk Utility will overwrite what is on the disk 2 times.
Then I let it start the process. I immediately got this error
Disk Utility Couldn't open disk -69879
Next, I tried the same thing on the 500MB partition. Same result.
Now, neither of the partitions show in disk utility (or on the desktop).
Last edited: