A bootable hard drive eraser is useful when Windows will not start, when you are selling a PC, or when you need to wipe a system disk that cannot be erased while Windows is running.

Qiling Disk Master can create bootable media and wipe a disk outside Windows. This is useful for system disks and unbootable computers.
Step 1. Install Qiling Disk Master on a working Windows PC and create bootable media from the tool menu.

Step 2. Boot the target computer from the USB drive and change BIOS/UEFI boot order if needed.
Step 3. Open the wipe function and select the hard drive you want to erase.

Step 4. Choose a wipe method, confirm the target disk, then click Proceed.
A bootable eraser helps wipe a system drive outside Windows. Confirm the target disk carefully and keep a backup before starting any erase task.