Although Windows tries its best to improve the performance of its operating systems with each update, this is not always the case. Sometimes the updates cause new unknown errors in the system. One such case is when the system starts displaying the recovery partition drive and virtually considers it an active part of the system. Users would see an additional partition on the system and keep getting an error:
You are running out of disk space on the local disk (G :). Where G: is the problematic disk.
It doesn't matter if the other drives may have a lot of free space, this error message will keep popping up every time you try to delete it.
A known cause is that a Windows update revealed the recovery partition and assigned it a drive letter.
The reason this problem is so annoying is that we cannot delete the recovery partition as it is crucial for the system. Also, the additional partition may use up system resources and slow it down. So our approach to finding a solution would be to change the drive letter and not delete the drive itself.
How to remove the drive letter?
1] Press Win + R to open the Run window and type the command cmd. Press Enter to open the Command Prompt window.
2] Type the command diskpart and press Enter.
3] Type the volume of the command list and press Enter. The list of partitions on the systems will be displayed.
4] Type the command select volume G: and press Enter, where G: is the drive letter.
5] Type the command delete letter = G: and press Enter, where G: is the drive letter.
This helps remove the drive letter.
This troubleshooting was derived from a discussion on the Microsoft Answers forum that you could check out here.