Why Can't I Delete E Drive

Hello there! I encountered a trouble while using Disk Management. I was trying to delete my E drive to transfer the space to the D drive, but the Delete Volume option was greyed out in Disk Management. Why can't I delete E drive? Is there any other way to delete a partition on the disk? Thanks in advance!

There are multiple reasons why you can't delete the E drive:

• Page file: If there are hidden Page files that contain the specific information present in the RAM stored in the partition, you will not get the Delete partition option. 
• Virtual memory files: If the virtual memory files are set on the E drive, the Delete Volume option will be unavailable.
• Operation System files: When the operating system files are installed on the E drive, you will be unable to delete the partition.

Thus, you need assistance from a professional disk and partition manager to delete the E drive. EaseUS Partition Master Free contains everything you need for the entire process.

First, you should create a bootable USB drive of EaseUS Partition Master:

Then, you can delete the E drive in WinPE.

Related Article: Fix Delete Volume Greyed Out in Disk Management on Windows 7/8/10/11