How to remove the unknown Local disk Z: drive without any data loss? After that you create other drives by disk partition using windows disk partitioning or some other software. When you purchase a new laptop or do a system recovery there may be only one Partition available which is only a C: Drive. This is due to the partitioning of the drives.

If you see in the above image, you can observe that there is an unknown local disk present in the local drive list. But it still appears in the drive list as a Local drive. You may not be able to see the Z: drive in the System Protection tab. This may be only due to garbage memory or temporary memory assigned as a local drive and has no access to open it as it is being used some where by the operating system or any other application. The unknown drive mostly will be with alphabet name assigned as Z: If you have bought a new/used laptop and did some disk partitions you may come through this kind of unknown or alien local disk drive appearing in the drives list. This is one of the rarest issue you might have faced using Windows Operating System.

Z drive windows 10