Click . Your drive is now restored to its original factory state. Risks and Technical Limitations

Type list disk and press Enter. Carefully look at the list to find your USB drive's disk number (e.g., Disk 1 or Disk 2) based on its size.

Deep-seated viruses or boot-sector rootkits can sometimes survive a standard wipe; an LLF destroys them [4].

Fixes drives that show smaller storage space than advertised.

Type detail disk to verify you have selected the correct portable drive. Type clean all and press Enter.

Once complete (showing 100%), close the tool. Open Windows Disk Management (diskmgmt.msc). Windows will prompt you to initialize the disk. Select MBR or GPT, then create a new simple volume. Finally, perform a normal Quick Format (exFAT or NTFS).

Click on the middle tab labeled Low-Level Format .

Since Windows doesn't have a built-in "low-level" button, you'll want to use a dedicated utility: HDD LLF Low Level Format Tool

Several highly reliable software utilities can execute a zero-fill on a USB drive. 1. HDD Low Level Format Tool (HDDGuru)

Using a tool like USB Low-Level Format by BureauSoft, the process is straightforward:

Extremely simple interface; supports USB, SATA, and IDE.

You cannot perform a true hardware-level low-level format on a modern NAND-flash-based USB drive at home. The firmware inside the USB controller manages the physical translation layer (the FTL – Flash Translation Layer). What the industry calls "USB low-level format" today is actually a controller-level factory re-initialization or a mass-zeroing fill .

Rewrites file system tables (NTFS, FAT32, exFAT). Files are "hidden" but can be recovered using specialized software.

While primarily for creating bootable drives, it has advanced options to "Quick format" and "Extended label and icon files," which can help reset a stubborn USB drive. Steps to Low-Level Format a USB Drive

Low-level formatting can: