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Inaccessible usb3 boot device
Been working on this for weeks to no avail. I have Win 7 on on ssd and Win 10 on another ssd. I am not dual booting but switch to the drive I need in the bios. Using Casper 8.0, I clone the Win 7 and Win 10 to backup internal ssds. These internal backup drives have no issues booting. I also clone the Win 7 and Win 10 to LaCie usb3 thunderbolt ssd drives. This is where the problem starts
The Win7 has no issues creating a bootable usb3 backup.
The Win10 will not create a bootable usb3 backup.
When trying to boot to the Win10 usb3 drive, I get the "inaccessible boot device" error then a restart.
I have tried just about everything I can find but nothing fixes the issue.
Any suggestions?
Ron