Several problems with hard drives, with CHKDSK and EFI partition

Hello,

My first problem is that i run powershell with admin rights and ran chkdsk f: /f /r . I thought it would restart pc after that but no, just started running chkdsk until now, so i could access the disk. Now, after about 3 hours total progress is 0%, but in phase 2, is this normal? should i wait? HD is not SSD and with 3.63TB capacity. I made chkdsk previously with CMD and didnt take so long, maybe is slower cause didnt boot windows?

Another problem is that the hard drive which made the windows boot was hit and cant be recovered. I had a SSD with the old windows partition, but dont know why needed this other hard drive to boot, i couldnt start Windows so i saw in the internet that could use bootrec /fixmbr, then bootrec /fixboot and then bootrec /rebuildcbd but that just made it worse. After making a clean install in other SSD i see the old windows partition in the other SSD shows my partition with all the data as EFI dont know why and cant access it, i tried to assign it a letter but gives me access denied