Micro Au6989sn-gtc Software: Alcor

This controller is most commonly found in budget USB 2.0 flash drives, fake capacity drives, and generic promotional USB sticks.

Drive still shows 0 bytes after success

• Cause: Windows retained the old partition table.
• Fix: Open DiskPart as Admin. Type list disk, select your USB disk, type clean, then exit. Close DiskPart and reinitialize the drive.

Alternative Tools

• ChipGenius – To verify controller and flash ID
• CheckUDisk – Lightweight info tool
• HDD Low Level Format Tool – Basic wipe (but won't fix bad blocks)

Step 5: Post-Processing

1. Close the Alcor MP tool.
2. Unplug the USB drive.
3. Plug it back in. Windows should detect a fresh, fully-capacity drive ready for formatting via Disk Management.