I can't partition my new SSD in Disk Utility for Macbook Pro 13" mid 2012
I recently upgraded the HD to SSD
Macbook Pro 13" mid 2012 A1278
Mac OS-10.11.6 El Capitan
I followed guidance in Apple Support similar comments, but it keeps failing. It seems to be a APFS - old OS - conundrum.
Disk Utilities version 15.0 in El Capital doesn't have a format for recommended choice APFS, only OS X Extended (Journaled)
Scheme is GUID
First Aid reports disk is OK
but ERASE keeps failing
In an attempt to format to APFS, I removed the SSD, put it in external drive with USB, and tried to format with 10.15.7 Catalina on another Macbook Pro. That seemed to be successful. Then I reinstalled SSD drive inside Macbook Pro 13", booting with 10.11.6 El Capitan from the old hard drive via external USB connector, then attempting to use SSD...
....and SSD doesn't work.
Disk Utility version 15.0 reports:
"Volume Type UNKNOWN
File system UNKNOWN
Writable NO
Available free space 0 (zero)
Volume capacity 250....
Free space 0 (zero)
Used space 250....
Owner enabled NO
Is encrypted NO
Can be verified NO
Obi Wan, this is not the SSD I wanted.r
MacBook Pro