DiskPart Has Encountered an Error: The Parameter Is Incorrect When Formatting

DDaniel8

Hi everyone, I got the error “Windows could not format a partition on disk 0,” so I opened CMD from the installer and tried using DiskPart manually.

I used these commands: list disk, select disk 0, clean, create partition primary size=20000, select partition 1, active, then format fs=ntfs quick. But every time I run the format command, it says “DiskPart has encountered an error: The parameter is incorrect.”

I’m not sure if the file system is damaged. Has anyone fixed this error that way before?

Emily

DDaniel8

Try this format command instead:
format fs=ntfs quick override
If that fails, let me know and I'll give you the next steps.

Lukas

You were actually on the right track, but you did a bit too much work. The reason you are getting the

"parameter is incorrect" error is likely because the commands you used (specifically the active command) are meant for older "Legacy/MBR" systems. Modern computers use "UEFI/GPT", which requires a different partition structure and doesn't use the active

flag at all. You don't need to manually create or format these partitions.

The Windows installer prefers to do it automatically.

Open CMD again from the installer (Shift + F10). Type diskpart and press Enter. Type list disk and press Enter.

Type select disk 0 (assuming 0 is your target drive) and press Enter. Type clean and press Enter.

(This completely wipes the drive and removes any corrupted formatting).

Now, stop here, type exit to leave DiskPart, and type exit again to close the command prompt. Go back to

your Windows installer screen. If needed, click "Refresh". You should see your drive listed as

"Drive 0 Unallocated Space." Don't click "New" or "Format". Just click on that unallocated space to highlight it. And click Next. Windows will automatically create all the required partitions (EFI, System, Primary) in the

correct modern format and install the OS.