A number of my clients have reported since updating to Windows 10 release 1803 that new disks have appeared in on their Computer (Eg D:\) which were not there before the update. These are typically System disks that manufacturers set up so you can easily reinstall your computer to factory defaults.
The standard process of hiding these by removing the drive letter from diskmgnt.msc does not usually work for these drives so the drive letter must be removed via the diskpart command.
WARNING: Take care with the below instructions as removing the drive letter from the wrong disk can land you in an even worse situation!
- Firstly, run a command prompt window as Administrator from your Computer (Start > CMD > Right click, Run as Administrator
- Run the below commands:
This will produce a list similar to the below, make a note of the volume number that has the drive letter that you wish to remove (Eg Volume 3 for drive letter E:\ from the example below):
DISKPART> list volume Volume ### Ltr Label Fs Type Size Status Info ---------- --- ----------- ----- ---------- ------- --------- -------- Volume 0 D DVD-ROM 0 B No Media Volume 1 C OS NTFS Partition 199 GB Healthy Boot Volume 2 ESP FAT32 Partition 500 MB Healthy System Volume 3 E NTFS Partition 479 MB Healthy Hidden
Now, select the volume you wish to edit:
select volume [Your volume number]
select volume 3
Now, remove the drive letter assigned to the disk.
remove letter=[Your drive letter]
You should now notice that the Disk letter has been removed from my computer. This process is non-destructive so the data is still on the disk, just not visible to you.