USB Media Explorer

Hard Drives

NMI was designed for use with flash/pen drives and card readers. However, hard drives will work if they are properly powered. There are a few issues with hard drives.
  1. Power Issues. If you have a bus powered hard drive (no dedicated power adapter), you may run into power issues. The USB specification states that USB 2.0 host devices need to be able to provider up to 500mA of power. This is enough for a flash drive. Many hard drives require more to power up (My 2TB WD requires 650mA). While a PC can generally support this spike, not all tablets will. NEVER CONNECT AN UNPOWERED HARD DRIVE TO A PHONE.
  2. Memory Constraints. Hard drives can contain vast qualties of Photos, Music and Videos. In may cases NMI/NPV will scan the entire drive. This has two problems. One, it's slow. Two, it may cause an out of memory crash. For hard drives, it's recommend to use the "Folders" option on the "Photos" screen, the "Folders" screen for videos and the "Folders" option on the "Music" screen.
  3. Mac (HFS+) formatted drives. NMI does not support HFS+, so the drive will need to be reformatted.

How do you know if you have a power issue?

If you connect your drive and if it either clicks, starts spinning and then stops, or intermittently prompts you to use the device, you have a power issue.

Power Issue Solutions:

NOTE: Your device charger may or may not power a USB hard drive! Some chargers only support specific devices.
Repairing A Damaged Disk in Windows:

NMI takes preventative measures to ensure that even when disconnected abruptly a drive will be in a valid state. Unfortunately, if disconnected while writing the directory entry it can become corrupted. Windows users, can do the follow to repair a corrupt drive:

  1. Open Windows Explorer from the Start menu or with {Windows Key}-E
  2. Right click the drive. Select Properties
  3. Select the Tools tab
  4. Click Check Now...
This works for all file systems Windows supports (FAT, NTFS, etc). Alternately, you can type "CHKDSK /F {Drive Letter}:" at the command line.
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