How to assign a drive a letter using Diskpart. I just recently reformatted my hard drive and every since I restored windows on my hard drive I noticed that windows automatically assigned my main hard drive as letter D and my System Reserve as C,. How to Remove a Drive Letter in Windows 10. I have a new 2TB Hard Drive installed onto my desktop and whenever I assign it to a letter, it works perfectly fine. For example Ill change the letter to S:. How to Change a Drive Letter in Windows. 539.927.721.1.. Why Is My Main Hard Drive Letter Assigned To Drive Letter (D:). clean and assign drive letter walk Hard Drive Assigned Letter Goes Away. Assign Drive Letter in CMD Windows.I already tried to run "diskpart" but i get this error when i mark it the drive active 'Virtual Disk Service error: The specified partition is a not a primary or
