After a stupid mishap with dual booting Ubuntu and Win 10 (installed Ubuntu on different drive than Windows by accident), I am left with Windows on my C: drive, and the residual Ubuntu crap on my media drive (H: ). I ended up not being able to boot Windows because I was using the Grub bootloader, which couldn't find Windows. I stupidly decided the best way to get rid of Ubuntu and to boot back into Windows normally was to just delete the Ubuntu partitions on my H: drive. Now the whole drive is an EFI system partition. I was only able to boot into Windows again after booting from a Windows 10 USB drive and using diskpart to repair the boot files. So now I am stuck with an H: drive with 1.5 TB of videos and music that I cannot access.
My question is, is there any way of converting this somehow to a regular disk and having my drive back? Or at least being able to access the drive so I can get my stuff off of it? I have mounted it, but get an error when trying to access the drive (see pictures). I know I can just reformat the drive and make it a 'normal' drive again, but the object is to either keep or somehow save the videos and music on the drive. I can see that the files are still on there, I just cannot access them (see the file explorer picture)
Here are my partitions and the error I get when accessing the H drive: https://imgur.com/a/GOcY1
Thank you in advance