Windows 10: Changed drive letter on EFI partition, and now it's gone

So, yesterday I decided to try and Dual-Boot windows with a Linux Distro. I couldn't get the installer USB to work because I was using the installer version instead of a Live version. I formatted the USB in Windows to try and install the new distribution, and restarted my device for some reason... It told me that windows was unable to boot, and I figured it was because the Linux distro was missing. I went into Bios and reset my load order so that Windows Boot Manager was first instead of the USB. Well, windows still wouldn't boot, so I tried using BCD to fix it. Well, I assigned a drive letter

:)

 

Changed drive letter on EFI partition, and now it's gone

So, yesterday I decided to try and Dual-Boot windows with a Linux Distro. I couldn't get the installer USB to work because I was using the installer version instead of a Live version. I formatted the USB in Windows to try and install the new distribution, and restarted my device for some reason... It told me that windows was unable to boot, and I figured it was because the Linux distro was missing. I went into Bios and reset my load order so that Windows Boot Manager was first instead of the USB. Well, windows still wouldn't boot, so I tried using BCD to fix it. Well, I assigned a drive letter to the EFI partition as part of this solution, but it was late at night and i'd forgotten to take the letter off. Now, my bios does not detect WBM, nor does it detect my internal storage. C: has been replaced by a repair USB I made to access WinRE, and the only other storage devices that show up is an external SSD I use for games and a DVD burner. Reinstalling windows doesn't work either, as it only detects the ExSSD, and not the internal. BIOS recognizes it, though, so i'm not sure why it wont detect the partitions. Is there a way for me to remove the drive letter from the partition, or even a way to get my system to recognize it? This is what DiskPart gives me;

 

Drive letter for EFI system partition?

In Macrium Reflect (free), a Dell Optiplex 3046 running 6.3.1835 on Win 10 64 Pro, returns a

when performing a backup that includes the EFI system partition. Macrium's suggested solution is to assign a drive letter to that partition. The EFI partition is required for a disk image.

Before I assign a drive letter I'd like to understand what risks there are in the assignment.

 

My EFI System and Recovery Partitions are on the wrong disk (Windows 10)

Regarding Option 1:

The steps need to be run from WinRE. Please take extra care when selecting the volume number. Use list volume to verify the volume numbers. Target the 523 MB EFI partition and convert it to a standard data partition.

And when running the bcdboot command, use the correct drive letters. The OS partition's drive-letter may not necessarily be C: . Check the output of list volume to find the drive letter of the OS partition (1862.39 GB).

Let's know how it went.

After completing the EFI stuff, one of us shall post the instructions to configure the Recovery partition.