When an SSD shows less space than expected, the drive is not always defective. Windows may be reading an old partition layout, showing hidden recovery space, or leaving part of the SSD as unallocated space.

Use Qiling Disk Master when Disk Management cannot extend the partition because another partition blocks the free space, or when you need to resize the layout before using the SSD.
Step 1. Open Qiling Disk Master and check the SSD layout. Confirm which partition needs the missing space.

Step 2. Move or resize the blocking partition if unallocated space is not next to the target partition.
Step 3. Drag the partition edge to include the available space and preview the final layout.

Step 4. Click Proceed and allow the computer to restart if required.
Most SSD capacity problems are caused by partition layout, not hardware failure. Check Disk Management first, then use Qiling Disk Master when Windows cannot move or extend partitions directly.