Why is there a (E:) drive on my pc?

Hi Colton, this is a known bug in the 1803 Update,

It is the recovery drive, you are not meant to see it, it is not meant to have a drive letter, remove the drive letter and everything will return to normal:

Click your Start Button, type cmd, then right click Command Prompt and choose 'Run as Administrator'

Run this command and hit Enter

diskpart

Run this command and hit Enter

list volume

Note down the letter associated with that new drive

Run these commands one at a time and hit Enter (replace X with the correct drive letter)

select volume X

remove letter=X

Close Command Prompt and restart your PC

Hey Colton,

This is a recovery partition brought into view in 1803. You cannot remove, but only you must remove its mapping of its respective drive letter, which is D. Once you do this, it brings it back to its intended visibility, being hidden and out of sight. Once you do this, you won't be pestered with low disk space notifications anymore. You will need to remove the drive letter and mount point in DiskPart in order to do this.

Should you want to go ahead and do this, follow these instructions:

Hit Windows key + R together to go into Run. Type in the following: diskpart

Enter the following in the new DiskPart window:

select volume LETTERHERE
remove letter=LETTERHERE

Does not work after a reboot? Try entering this instead in an administrator session of Command Prompt: mountvol LETTERHERE: /D

Of course, LETTERHERE, you replace with your drive letter.

Source: https://www.reddit.com/r/Windows10/comments/8gj...

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

I hope this helps. Please do let me know if this fixes it, and good luck.

This is one of the known issues with the update as Recovery partition should be hidden and is accidentally assigned a drive letter.
Right-click Start>Command Prompt(admin)
Type in the following:
diskpart
list volume
select volume 3
Replace 3 with the number of the volume which is assigned a drive letter. (In hundreds of MBs)
remove letter="G"
Replace G with the Recovery drive letter.

Don't worry, removing a drive letter would not cause any harm to your device.