Assign Drive Letter by Batch File

[johnbil]

I have been having some problems with an external Sata hard drive on my PC. I assign it a specific letter, but when I reboot, the drive does not maintain its letter. The drive itself is new, but I also had the same problem with another drive.

If this problem can’t be fixed, I would like to create a batch file to assign the drive a specific letter quickly and automatically rather than doing it manually through ‘Computer Management’.

Does anyone know the wording, which I should use in the batch file? Any help would be appreciated.

JohnB

[Squashman]

I believe you could use DISKPART or MOUNTVOL.

[foxidrive]

I have been having some problems with an external Sata hard drive on my PC. I assign it a specific letter, but when I reboot, the drive does not maintain its letter.

Is it USB? Try setting the drive to a higher letter in an area that will not be reached with other devices, using Disk Management.

S: or even Z: etc.

[johnbil]

I tried DISKPART, but couldn't figure out how to input the criteria at the prompt via the batch file.

Assigning Z: as the drive letter seems to have the letter maintained in the next session.

Thanks for the advice guys.

[foxidrive]

Assigning Z: as the drive letter seems to have the letter maintained in the next session.

What happens with USB is that the first available drive letters get shuffled as USB devices get added, removed, and changed.
Nothing remains stable wrt those drive letters.

[Elwood]

Hi,

I had the very same problem on a disk that should appear as E:
Here is what I do automatically upon the computer start:

if exist E:\ goto :eof
echo select volume 3 >%tmp%\script.txt
echo assign letter E >>%tmp%\script.txt
diskpart /s %tmp%\script.txt rem run diskpart with the correct answers

So basically:
if drive is here, exit
generate a response file for diskpart
run diskpart with the correct answers