Can I swap the SSD from mid-2013 Macbook Air and mid-2014 Macbook Pro?
Solution 1:
It doesn't work
My Pentalobe and Torx bits arrived today and I tried swapping the drives. When I put the 256 GB drive in my Macbook Pro, it doesn't boot and displays this image
I tried holding down opt to boot to a usb drive and do a fresh install of Mavericks on the drive.
When I attempt to boot from the USB drive, the crossed out circle image is displayed again.
I've also tried holding down shift during boot to boot into safe mode. The neutral gray screen displays for a longer time, but eventually the crossed out circle appears again.
Solution 2:
According to this well-respected and detailed guide to Apple's SSD modules, the mid-2013 MBA and mid-2014 MBP use the same 'Generation 3' SSD module.
They should therefore work in both machines. The fact that you get the same "No Entry" sign when using an external USB suggests that there's some other problem. Conceivably, that could be caused by not inserting the SSD completely/properly.