Hello. i have a problem with my iomega hard disk drive external portable 500gb sn: XLAA33Y956 model: 31887300 SPHDU2 made in philippines. everything i save that is lost. when i disconect and connect again the disk my data is lost. please for your answer

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Windows likes to mess with drive letters. Sometimes if you've plugged in another u.s.b. device, Windows will mis-assign the drive letter. Try this:

1. Log on as Administrator or as a member of the Administrators group.
2. Click Start, click Control Panel, and then click Performance and Maintenance.
   
   Note If you do not see Performance and Maintenance, go to step 3. Performance and Maintenance appears in Control Panel only if you use Category view. If you use Classic view, Performance and Maintenance does not appear.
3. Click Administrative Tools, double-click Computer Management, and then click Disk Management in the left pane.
4. Right-click the drive, the partition, the logical drive, or the volume that you want to assign a drive letter to, and then click Change Drive Letter and Paths.
5. Click Add.
6. Click Assign the following drive letter if it is not already selected, and then either accept the default drive letter or click the drive letter that you want to use.
7. Click OK.

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Does the Iomega show up under 'my computer'?
It should be another drive (D, E, F whatever) and as such you put stuff on to it the same way you would put stuff on to your C drive.

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My Iomega (33654) 500GB USB isn't working. When I turn it on the blue light comes on for a few seconds. I can hear / feel it working but then the light goes off (it is still whirring inside). The computer isn't recognising it. I think it's still under guarantee but I can't find the paperwork. Do you have any ideas?