Some Iomega drives ship formatted for use with Mac OS and must be reformatted for use with Windows. This includes most Iomega Desktop and Portable Hard Drives that have FireWire and USB connections, including the Mac Companion Hard Drive, the MiniMaxHard Drive, the Iomega UltraMax Hard Drive, and the eGo® Portable Mac Edition. It also includes the Helium Portable Hard Drive, which is USB only.
If you have one of the drives listed above, follow the formatting instructions under Answer ID 16551. If the drive is still not detected, return to these instructions (Answer ID 1235) and continue with STEP THREE.
If you do not have one of these drives, continue to STEP THREE.
STEP THREE - Manually assign a drive letter to the Iomega drive
- Right
click the Computer or My Computer icon and select Manage.
- Click the plus
(+) sign next to Storage if it is not already
expanded.
- Click Disk
Management.
- Right
click the icon for the Iomega drive and click Change Drive Letter and
Path.
NOTE: Windows may report the Iomega drive as a generic Local Disk and a non-Iomega drive string may be present. For more information, please go to Answer ID 1966.
- Click the Edit
button.
- Next to Assign
a drive letter, select an unused drive letter from the drop-down menu.
- Click OK.
- A message
appears that states Changing the drive letter of a volume may cause
programs to no longer run. Are you sure you want to change the drive
letter?
- Click Yes.
- Restart
the computer.
- Double
click the Computer or My Computer icon to see if the Iomega
drive is detected.
If the Iomega drive letter appears, you can now use the drive.
If the Iomega drive is still not detected, continue with the next step.
STEP FOUR - Disconnect the Iomega drive from the USB hub
NOTE: If you are not using a USB hub, proceed to STEP FIVE- Disconnect
the Iomega drive from the USB hub.
- Try
connecting the Iomega drive directly to one of the USB connectors on the
computer.
- Restart
the computer.
- Double
click the Computer or My Computer icon to see if the Iomega
drive is detected.
If the Iomega drive is detected, you can now use the drive.
If the Iomega drive is still not detected, continue with the next step.
- Right
click the Computer or My Computer icon and select Manage.
- Click the Device
Manager icon.
- Click the plus
(+) sign next to Universal Serial Bus Controllers.
NOTE: If Universal Serial Bus Controllers is not listed, there is a problem with the USB controller or the USB controller is not enabled in the computer's BIOS. Please contact the computer or card manufacturer for updated drivers and/or for information on how to fix or enable the USB controller.
- Under
Universal Serial Bus Controllers, a Universal Host Controller and a USB
Root Hub should be listed.
If the Universal Host Controller or USB Root Hub has an exclamation mark
next to it or a red X on the
icon 
, there is a problem with the
USB Controller. Contact the computer manufacturer or card manufacturer for
updated drivers and/or for information on how to fix the USB controller.
If the Universal Host Controller or USB Root Hub does not have an exclamation mark next to it or a red X on the icon, please continue.
- Now ensure
that your system has the latest USB chipset drivers installed. Please use
the following steps to help determine your computer's USB chipset
manufacturer.
- Right
click the Computer or My Computer icon and select Manage).
- Click
the Device Manager icon.
- Click
the plus (+) sign next to Universal Serial Bus
Controllers.
NOTE: If Universal Serial Bus Controllers is not listed, there is a problem with the USB controller or the USB controller is not enabled in the computer's BIOS. Please contact the computer manufacturer for information on how to fix or enable the USB controller.
If the error persists, the unit may require servicing to resolve the issue. Please click on the Contact Us link below to obtain further assistance and servicing options if needed.
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