Win 7. Disappearing back up drive

If you store a lot of CAD and other files on a back up system, the last thing you want to see is the drive suddenly disappearing and windows throwing error codes (43, 28) at you.

Some of the fixes that we have seen have been downright misleading, time-wasting or destructive.

However fixes are usually quite simple. The first thing you should always try to do,  is:

  1. to turn off your invisible hard drive and unplug it from your computer
  2. uninstall the now invisible drive from your computer system
  3. clear your cache and all remnants from that drive (neglect this and all you will do is waste your time)
  4. turn your computer system OFF to reset (on a laptop also remove the battery too and then plug back in).

On the reinstall, the system should be back on line, and this works pretty much most of the time.

When you get this error message specifically for a TB Seagate drive, here is one good summary of what you should do – found hidden away on

  1. Click the Start / Windows button at the bottom left corner of the screen.
    Right-click on Computer and choose Manage.
  2. Double-click on the Device Manager.
  3. The device will usually appear under “Other Devices” or “Unknown Devices”; right-click on it and choose Uninstall.
  4. Once it has disappeared from the Device Manager, disconnect the external hard drive.
  5. Disconnect the device from the computer (unplug the USB cable).
  6. Click Start / Windows button in the bottom left corner of the screen
  7. Windows 7 – In the Search field, type C:\windows\system32\driverstor and press Enter.
  8. Delete the file INFCACHE.1.
  9. If you get an error when trying to delete this file, try the following steps:
    1. Right-click on INFCACHE.1.
    2. Select Properties.
    3. Click the Security tab.
    4. Click the Edit button.
    5. Select (Users xxxx-PC\Users) or something like (Users 7xxxx \Users)
    6. Under the “Permissions for users” check, mark everything to “Allow All”.
    7. Click Apply then OK.
      If you receive a Windows Security box click Yes, then OK, then OK again.
    8. Right-click on INFCACHE.1 file and choose Delete.
    9. Reboot and reconnect the drive.  The file should be rebuilt, correcting the problem.
    10. If that fails, you will need to try to reload the USB drivers for the operating system rebooting, and attempting a Repair/Restore.
      Note: This can be dangerous to your data and you should disconnect your external drive before attempting this.
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