Question about Iomega (33090) 250 GB Hard Drive

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Defragmenting external drive

The Iomega DHD250-N2 is an external drive used as a backup. It is not connected directly to any computer (just through the network). How can I defrag it? It doesn't allow us to defragment it and it desperately needs it.

It can't do defragmentor the normal way through System Tools. Any help is greatly appreciated!

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Re: defragmenting external drive

Run the command prompt, by going to start run and entering "cmd" then enter "defrag" followed by the drive letter.  if this doesn't work, enter "defrag /?" with the space for more options

Posted on Jan 09, 2008

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Trying to find the operators manual for prestige desktop hard drive super speed usb 3.0 ,2 tb

The general directions is to plug the USB cable from the IOmega Prestige into any available (Open) USB port.

To open, (Access) the contents on the harddrive, double-click on the drive letter that corresponds with the IOmega.

In WinXP left-click on Start, then on My Computer.
In Win Vista and Win7 left-click on the Windows logo button, then on Computer.

You will see there are different drive letters;

Drive A: is reserved for a Floppy Drive. Older computers
Drive C: is for the Harddrive. (Hard Disk)
Drive D: is reserved for a recovery drive, or an optical drive (CD/DVD drive)
Drive E: is reserved for an optical drive, usually.

Drive letters beyond these are usually under the heading, Devices with Removable Storage

One of these drive letters should correspond with the IOmega.

Suggest, IOmega not plugged in, go to My Computer, or Computer, and look at the devices connected to the various drive letters.

Now plug the IOmega in, and see if it shows up next to a drive letter.
(Give the computer BIOS a few seconds)

Where there was NO device shown BEFORE, there should now be a device shown.
{No device shown before, but now there is. May not state IOmega, just external storage, or similar}

DOUBLE-click on the device shown.

For example:

I have drive letters C: D: E: F: G: H: I: J: and K:

Drive letter C: is for my harddrive.
Drive letter D: is for a recovery drive. (Partition in harddrive reserved for recovery)
Drive letter E: is for an optical drive (CD/DVD drive)

Drive letters F through K are reserved for an external storage device.
Whether it be an external harddrive, or flashdrive, or what have you.

IF you find the drive letter that corresponds with the IOmega DOUBLE-click right on it.
If nothing happens, or if there is no device shown when the IOmega is plugged in, there is a problem with the IOmega.

Hard to believe IOmega is still having problems with their external harddrives.

In the past they were having problems with a small circuit board located inside the IOmega's case.

[ A circuit board is a PCB.
Printed Circuit Board

For example a computer mouse has a small PCB in it, ]

The small circuit board is an Interface Board.

It connects the harddrive inside the IOmega's plastic case, to a USB cable, and this allows the harddrive inside to be plugged into a USB port on a computer.

As mentioned inside the plastic outer case (External enclosure) of the IOmega is a harddrive.
(Hard Disk drive; proper speak)

Harddrives are measure across their Width. There are two current types used;
A laptop size harddrive, and a desktop size harddrive.

A Laptop size harddrive is 2.5 inches across in width. (2 and a half inches, or 6.4cm)
A Desktop size harddrive is 3.5 inches across in width. (Or 8.9cm)

There are two technologies used;

I'm sure the harddrive inside susanbrenton is a SATA unit.
I BELIEVE, it is a laptop size harddrive (2.5)


If there is data (Information) on the IOmega that you must have, you may wish to buy an inexpensive external enclosure, remove the harddrive from the IOmega, and install it into the external enclosure.

The external enclosure has a plastic case (Enclosure), and a small circuit board inside. It has a USB cable, or connector, just like the IOmega does.

Once you install the IOmega harddrive inside the case, the case is closed, and it's USB cable is plugged into a computer.
(Just like the IOmega. You are just replacing the small circuit board essentially)

Once you have the IOmega's case open, and can view the internal harddrive, measure the width of the harddrive.
Buy the appropriate external enclosure.

This is one example of an external enclosure for a 2.5 SATA harddrive,

This is one example of a external enclosure for a 3.5 SATA harddrive,

Basic instructions on how to open an IOmega Prestige external enclosure (Case):

1) There are two Philips head screws on the Back of the case.
These are removed.
Once removed a the oblong panel on the end comes off.

2) You can now see the harddrive inside. Pull from the Front, and remove the harddrive out of the case.

3) The harddrive is attached with screws to a metal carrier. (Bracket, essentially)
Remove the screws, remove the harddrive.

Basic example, the harddrive will look like this,

For additional questions please post in a Comment, (Believe upper right of your page)


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    2 Plan the future requirements and consider the space needed accordingly.

    3 Choose an external drive of 20 GB or above to store huge data backups.

    4 Get an external hard drive and connecting cables to attach the drive to your computer.

    5 Select the data you want for backup. Organize the data into folders and sub-folders for easy find. Financial data, digital photos and music can form priority data for backup.

    6 Connect the drive to your computer. Use the drag and drop options for taking the backup.

    7 Remove the drive after properly ejecting by right clicking on the task bar on the desktop.

    8 Keep the external drive away from the place where you have your computer when done. If your computer gets damaged due to any unforeseen reason, you will have your entire data safe in the external hard drive. It minimizes the risk of data loss.

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    just make sure both power and data cables are properly plugged and connected respectively. if you are using it with a desktop, please always plug your usb connection from the Iomega 1TB external drive to the rear USB port in line where you built-in LAN not plug it in the frontload ports. some motherboard manufacturers uses usb 1 and/or 1.1 only for frontload desktop casing provision.

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    Please do accept this solution and revert for further assistance.


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