Disk speed test error testing a USB drive

Disk speed test error testing a USB drive

If that is a brand new USB disk or external hard drive then you need to format the drive before you can use it. The operating system will not be able to write to the drive if it is not yet formatted because the drive is still in the raw state. When you format the drive, it will automatically create a partition and after that that’s the only time you can write to the drive.

Once the external drive has been formatted, try running the Disk Speed Test again and it should work now. The program should now be able to read, write, and test the disk to check the optimal performance. Also remember that when using an external hard drive always make sure to eject it properly as to avoid any damage to the disk.

Damaging the disk as a result of always not ejecting it properly from the computer will prevent you from accessing the files of the drive. In a worst case scenario, the drive can get corrupted and also the files inside. To eject a USB external hard drive or other USB device, click on the Finder then click on the Eject icon next to the device’s name in the Finder window. See image.

An alternative to this is to drag the device to the Trash to eject it.