UEFI Shell on boot after reinstalling system drive: no FSx: entries in map

I removed my system drive ([NVMe / SATA SSD]) from my PC and then reinstalled it in the same slot. Now the system no longer boots and drops straight into the UEFI Shell.

The drive is detected in the BIOS/UEFI setup, but it doesn’t boot.

Running `map` in the UEFI Shell gives only BLK entries ; with no FS0:, FS1:, etc.

So the firmware doesn’t seem to see any readable FAT32 EFI System Partition.

Drives detected: – BLK0–BLK2: NVMe drive, 2 GPT partitions (~16 MB + ~1.9 TB) – BLK3–BLK6: SATA drive, 3 GPT partitions (~16 MB, ~4.6 TB, ~900 MB) – BLK7–BLK9: second NVMe drive, 2 GPT partitions (~16 MB + ~2 TB)