I bought a 2 TB Aura Pro X2 SSD from OWC for my mid-2014 15" MBP to replace my factory 1 TB SSD that was GPT partitioned into an 800 GB volume for macOS 10.14.6 and a 200 GB volume for BOOTCAMP Win7/64. I normally use the Win7/64 installation from within VMWare Fusion 8.5.10, but I occasionally have to boot natively into Windows to test hardware compatibility.
The Aura comes with a USB3 SSD enclosure that is compatible only with an Apple factory SSD, so I installed the new drive into my MBP and put the factory SSD into the enclosure.
Then I booted from my original SSD (in the external enclosure) into 10.14.6, used Disk Utility to GPT partition the new internal SSD into 1.6 TB and 0.4 TB volumes, used Disk Utility to restore my 10.14.6 installation onto the new 1.6 TB volume, booted from the new internal SSD, used Disk Utility to format the new 0.4 TB volume as MBR/NTFS, then finally ran Winclone 8 to do a volume-to-volume clone of my old Bootcamp installation onto my new partition.
When it came time to “inject drivers,” I inserted a USB stick with a Win10 installer that also has the Bootcamp support files downloaded from Apple. The Bootcamp assistant in 10.14.6 refuses to download a new set of drivers, so this is what I have.
WInclone found a set of drivers to inject, but when I click Inject Drivers, I first got an dialog box saying that injection failed, and then I got another dialog box saying that it succeeded.
I re-created my Bootcamp vm, and I can boot Fusion with the restored Win7 installation, but I can’t boot natively into it.
Startup Drive sees the new Bootcamp volume as a bootable volume, and I can also see it available if I hold down Option at startup, but it won’t boot.
I get the flashing underscore character in the upper left for a fraction of a second, and then I just get a dark screen. I’ve left it for 30 minutes without any progress.
I gone back into Winclone to attempt to set the volume for Make Legacy Bootable . . . and Make EFI Bootable . . . , and neither one improves the situation. Make Legacy Bootable makes it unbootable from Fusion, so I made it EFI Bootable.
So I can boot Fusion into Win7 and do my daily work, but I can’t boot natively into Win7, which may be a problem soon.