Ahard drive that is running slowly may not have been properly.

A hard drive becomes slow when it has not been partitioned properly.

Explanation:

A computer memory consists of the usable memory. This is normally the storage hard-drives that are used to store computer files, programs and any other important self-updating software. For instance, a 1 TB hard drive means that the computer's capacity for storage is ± 1 000 GB.

The disk contains some files needed to run the computer. This is sometimes known as the C-drive.

The other drive is for general storage. This is known as the D-drive.

To generate the two drives, a computer hard drive has to be partitioned. This means that the drive, say, 1 TB has to be divided into two storage systems. Sometimes problems with the partitioning result in the computer not working optimally and being slow.  

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