I have an old iMac (21.5-inch, Mid 2011) and I wanted to give it a new life with a new SSD. I've installed both Mac & Windows on the SSD and life was good.
Then I decided to format the old HDD to exFat as to use from both Mac & Windows, and now it won't boot to Windows anymore, even though Windows partition was untouched on the SSD.
I think even though it's installed & run Windows on the SSD, it was somehow using the boot from the old bootcamp instalation I had on the HDD. Now that it's removed I get
No bootable device error when trying to startup in bootcamp using the Startup disk setting.
Any advice on how I could recover it withouth a new Windows instalation? If it helps I'm not shy to use terminal commands or create other boot disks.