Attempting to Create a system Image would bring up the dialog box, “Where do you want to save the backup” and it would fail with another dialog box with the text:
“Windows could not find backup devices on this computer. The following information might explain why this problem occurred:
Close Windows Backup and try again.”
I searched the Windows Insider Feedback Hub, googled the web and Microsoft forums and I didn’t find a solution until a few days ago. On the Feedback Hub, in a post with the title, “Cannot create System Image in build 18956 FIX IT!“, CJH suggested disabling Windows Sandbox and virtual machine. (This link opens the Windows 10 Feedback Hub)
After disabling Windows Sandbox (Control Panel/Programs/Turn Windows features on or off/Windows Sandbox) I was able to create a system image again. I initially disabled Hyper-V Manager but after re-enabling it, system image still worked.
In 2012, the MacBook Pro (Retina, 15-inch, Mid 2012) with a 256GB SSD sold for $2399. A speed bump to a 2.6 GHz Core i7 and a larger 512 GB SSD was $3099. That’s $700 for a modest CPU speed bump and an extra 256 GB of storage. I was always constrained for disk space on my MacBook Pro’s 256GB SSD because I use Boot Camp and rEFInd to run macOS betas and Windows 10 Insider Previews.
I knew that my MacBook Pro Retina (Mid 2012) used a proprietary storage drive connector, but until recently, I didn’t know that a standard mSATA drive could be used in it with an adapter.
If you want to use the SSD drive you just removed from your Macbook as a backup drive or other external storage, the easiest solution is to just buy the $59 OWC Envoy Pro case for your SSD.
iFixit has a guide to replacing the SSD in the MacBook Pro 15″ Retina (Mid 2012). It’s a simple five minute process.
Why did I upgrade a seven year old MacBook Pro? My MacBook Pro (Retina, 15-inch, Mid 2012) was one of the first MacBook Pros with a Retina display. I bought it because of the Retina display and the quad core Core i7 (I7-3615QM), The third generation Intel Core processor, “Ivy Bridge,” has a 6MB cache on the CPU.