![what is a oem partition what is a oem partition](https://www.easeus.com/images/en/screenshot/partition-recovery/resource/hp-recovery-partition.png)
If you want to use Disk Management to fix the issue and remove the drive letter from the partition, you will fail in most cases. The first idea many users have is to remove the drive letter from the disk management partition. Then the partition no longer appears as a drive in Explorer, but is still present and can be used to restore Windows 10. The workaround is to remove the logical drive letter from this partition. From Aomei there is this article, which deals with the question of additional recovery partitions. One theory is that an existing recovery partition is considered too small during setup and another partition is created. This issue isn't that new, I found incidents reported in 2016. And at is another posting, describing the same thing and showing disk management entries. I received similare queries via Google+ ( here is a photo of a chinese system). The following screenshot from shows the explorer view with the new logical drive D. It never showed before, so can't think why it would now. I looked in Disk Management and it looks like it's the OEM or recovery partition. So I looked in Explorer and sure enough I now have a 450MB D: drive with 45MB left. … Then I got a notification in the Action Centre of low disk space on Drive D: – which would be fine, but I don't have a D: drive.
![what is a oem partition what is a oem partition](https://i.stack.imgur.com/odqWa.png)
#What is a oem partition update
I've just updated my laptop via Windows Update to 1803 – I suppose I could have waited, but I have working backups stored so I am not that fussed about installing the latest update. This forum post describes the situation: Updated to 1803 via Windows Update – now D: OEM partition is showing And Windows 10 starts with annoying notifications, that the disk is full.
![what is a oem partition what is a oem partition](https://i.stack.imgur.com/5EOxZ.png)
Due to the fact, that a drive letter is assigned, the logical drive will be shown in explorer. Some people notice after upgrading to Windows 10 April Update, that there is a new partition (recovery partition with Windows PE).