Step 1. Run Disk Scanner
Run Disk Scanner from the portable file or install package, and all disks will load as tabs,
Step 2. Select Scan Area
Select different Scan area for each disk, but if you want to check all disks all sectors, you can skip this step.
Step 3. Click Scan All Disks
Click on Scan All Disks and Scanner will scan the area you chosen at the same time.