PC fails to boot with cloned disk in Dual Boot PC
Yes, I now know dual-boot is not supported.
PC is UEFI with 2 drives, both GPT. Two Windows 10s, one on each drive.
Disk 0 has the EFI partition. Disk 1 is to be replaced.
I created linux-based rescue media. I UEFI-booted the rescue media, it said "Starting x64 UEFI loader". I cloned Disk 1, default options, with no errors. I replaced the original Disk 1 with the clone, and the PC fails to boot.
PC says, "Recovery. PC needs to be repaired. A required device isn't connected. Error code 0xc000000e. You'll need to use recovery tools." PC doesn't get to the OS select screen.
So, is there a way to fix this? I am hesitant to use Windows Recovery because I am afraid I'll lose the ability to boot the second OS. I can edit the BIOS or edit the BCD, but I don't know what GUID to put where.


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