|
|
If your USB drive has a hardware failure (a dead NAND chip), no amount of low-level formatting will fix it. If the tool returns "Write Error," the drive is likely physically dead.
The free version is speed-limited (50 MB/s), which is fine for small thumb drives but slow for large external hard drives. usb lowlevel format
Master Guide to USB Low-Level Formatting: Revive and Sanitize Your Drives If your USB drive has a hardware failure
When a drive is "RAW" or has corrupted partition data that Windows Disk Management can't fix. Master Guide to USB Low-Level Formatting: Revive and
Open the tool and select your USB drive from the list (be very careful not to select your internal hard drive).
Low-level formatting involves writing to every single sector of the flash memory. Doing this excessively can slightly reduce the lifespan of your USB drive. Use it as a "last resort" fix, not a weekly maintenance task.
Type list disk to see all connected drives. Identify your USB (usually Disk 1 or Disk 2). Type select disk X (Replace X with your USB's number).