Corrupted/Lost MBR or partition
A USB flash drive (or other flash storage device such as Secure Digital or CompactFlash) that is no longer seen by your computer as an available storage volume may not necessarily be due to faulty product, and in some cases can be corrected. This problem may be due to a damaged/corrupted/lost MBR or partition. Causes of this are numerous – some possible causes are loss of power during a write/erase cycle, disconnecting USB from port during a write/erase cycle, ESD (Electrostatic Discharge), power spike, etc. To correct this…
- Recover data, if needed. Recovery software links…
- NOTE: for USB disk recovery, partition recovery software is recommended
- Perform a low level format – software and instructions.
- Perform a regular system format to prepare the drive to accept new data (recommended formats: up to 2GB = FAT16; 4GB to 32GB = FAT32; 64GB and larger = either NTFS or exFAT). If needed, instructions are here. For SD cards, please format with the SD Formatter software available here.
If either the low level format or regular format fails, the drive may have malfunctioned and requires replacement. If so, please either exchange at the store, or respond to this message for warranty claim instructions.