Question about Maxtor OneTouch 4 500GB External USB 2.0 Hard Drive

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I have one of these for about a year. The computer does not see this harddrive. Usb cable is plugged in, Power unit is plugged in. Plugged it in to other computers and they do not see this harddrive. What else can I try to access this HD?

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Hello, I don't profess to know anything about this drive, but take a look at this web page, (link below) and select faq's. At the bottom of which it mentions the drive being locked to another computer and a solution, which might be helpful in your case.
Regards,
Nicam49
http://support.seagate.com/rightnow/flash/onetouch4/OT_IV_Menu.html

Posted on Oct 16, 2010

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My desk top computers screen went black, can my data be save on the hard drive and how can i take it off


Not posting the model number of the Dell desktop computer, get's you generic information.

The model number can be found on the back of the computer, next to the Windows product key.

Moving on......


Suggest use an external enclosure.
Remove the harddrive from the computer, and install it in an external enclosure.

The external enclosure has a USB cable, and you just plug it into any available USB port, on a working computer.

Then go to My Computer, or Computer; depending on which Windows operating system the computer has; and double-click on the drive letter that corresponds with the external enclosure.

(WinXP: Start > My Computer
Win Visa / Win 7: Windows logo button > Computer )

Examples of drive letters;

C: Drive = Harddrive of the computer you are using

D: Drive = Separate partition on the harddrive for Restore files, or is for the optical drive (CD/DVD drive)

E: Drive = Optical drive generally, but may be the drive letter that corresponds to a Removable Device.
The external enclosure you plugged in, is a removable device.

None of the above is 'etched in stone', except the C:Drive
Things change from computer to computer, and the way you may have it set up.

Easy way to know?
Before plugging in external enclosure, open My Computer, or Computer.
Look at what each drive letter corresponds to.

Now when you plug the external enclosure in, you will see the change; and know which drive letter corresponds to the external enclosure you just plugged in.

Double-click on the name next to the drive letter, that corresponds to the external enclosure you plugged in.

Go into My Documents, or Documents.
Again, depends on which version of Windows you have.
Win XP = Start > My Documents
Win Vista / Win 7 = Windows logo button > Documents

Now open each folder, until you get the personal files you want to keep.
Photos, music, videos, documents you have created, or downloaded.

You cannot remove programs, or applications. Just your personal stuff.
(You can, but that is for a separate discussion)

Also open Downloads.
(WinXP = Click on Start > My Documents > DOUBLE-click on Downloads.

Win Vista / Win 7 = Click on the Windows logo button (Start), click on Documents, click on Downloads.

Harddrives are measured in Width.
2-1/2 inches across for a laptop harddrive. 2.5 inches.
3.5 inches for a desktop harddrive.

Don't know what Dell this is again, don't have the model number.

Cannot tell you if the harddrive is an IDE (PATA) unit, or a SATA unit.

So you will need either a 3.5 IDE (PATA) external enclosure,
OR,
a 3.5 SATA external enclosure.

There are external enclosures that are 3.5 and IDE/SATA, also.

Basic examples,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1733195&CatId=2779

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2145406&CatId=2780

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3883498&CatId=2780

http://en.wikipedia.org/wiki/Parallel_ATA

http://en.wikipedia.org/wiki/Serial_ATA


Easy way to identify what type technology is used, for the harddrive in your computer; IDE/PATA, or SATA;

Power cable for an IDE/PATA harddrive,

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

Power cable for a SATA harddrive,

http://www.playtool.com/pages/psuconnectors/connectors.html#sata

For additional questions please post in a Comment.
Regards,
joecoolvette

Mar 29, 2013 | Dell Computers & Internet

1 Answer

How to add a second hard drive to a tower pc


I'll state basic information, and also more detailed info using an Asus M4A88TD motherboard;

The Asus M4A88TD-V EVO motherboard, with USB 3.0 technology, and an AMD AM3 processor socket,

[Plus the motherboard chipset is an AMD 880G - Northbridge chip, and AMD SB850 - Southbridge chip,

http://en.wikipedia.org/wiki/Comparison_of_AMD_chipsets#A-Link_Express_III ]

Motherboard:

http://www.newegg.com/Product/Product.aspx?Item=N82E16813131646

Under the main view photo at the top left; there are 4 views shown underneath. Click on the third view from the Left. Shows a top view of the motherboard.
Now it is the main view. Click on the main view to enlarge it.

See the 5 blue SATA connectors under the Blue and Black ram memory slots? Red line points to them, and subheading states;
SATA connectors; 6Gbps

IF you are going to add a SATA harddrive as a Secondary harddrive, use one that is open. (Nothing plugged into it)

Which one? Does NOT matter.
The beauty of SATA is, that you can plug into any one of those SATA connectors, and BIOS will find the device that is plugged into it.

(SATA 1 connector is usually reserved for the Primary harddrive, though. The one with the Windows operating system on it.
[Windows XP, Windows Vista, Windows 7, etc )

This is a general example of a SATA power cable,

http://www.playtool.com/pages/psuconnectors/connectors.html#sata

Note that it's connector is longer, than a SATA data cable's connector.
It has 15-pins.

General example of a SATA data cable,

http://en.wikipedia.org/wiki/File:SATA_ports.jpg

Looking at the connector for the SATA data cable at the top, note the L-shaped opening.

Looking at the SATA connector for a motherboard, shown on the bottom, note the L-shape where the SATA data cable plugs in.

The SATA power cable has the same L-shaped opening.
Only plugs in one way.

Caution!
IF, the SATA harddrive you are going to use, has a provision for a SATA power cable, AND a 4-pin Peripheral power cable, ONLY use just a SATA power cable!

Why?
Because you will burn the SATA harddrive up! Maybe not right away, but I assure you down the road it will.

4-pin Peripheral power cable,

(Also know erroneously as a Molex power cable.
Molex was the first manufacturer of that type of power cable connector.
Name kind of stuck. Just like calling an adjustable open-end wrench, a Crescent wrench ),

http://www.playtool.com/pages/psuconnectors/connectors.html#peripheral

A) Computer unplugged from power, computer case open, FOLLOW Anti-Static Precautions.

Anti-Static Precautions:
Your body carries Static electricity. Static WILL fry out (Short Circuit), the delicate hardware components inside a computer.

Relieve your body of Static BEFORE reaching inside your computer.

Computer on a table, computer Unplugged from power, computer case open;
TOUCH an unpainted surface, of the metal frame of the open computer case.

IF, you leave your computer in the middle of working on it, be SURE to Touch the metal frame again upon your return.

B) Plug the SATA data cable into the motherboard. Bring the SATA harddrive closer to the computer case, and plug an unused SATA power cable into it.

Find a slot in the metal harddrive bay, that you can slide it into.
Install the screws in the side, if the harddrive bay is of this type.
Otherwise there will be plastic clips on the side of the slot.

That's it.
Close the computer case, plug the computer back into power.
WAIT 1 minute, turn the computer on.

General example shown in 3 videos,

1) http://www.youtube.com/watch?v=kCgFYNLzn18

2) http://www.youtube.com/watch?v=OmTyu8jAfDg

3) http://www.youtube.com/watch?v=3a9n7G4q30M&feature=fvwrel

That Asus motherboard also has one IDE connector. (IDE/PATA)
[40-pin connector, Blue, and below the round CMOS battery ]

More than likely if there is a device plugged into it, it would be an optical drive. (CD/DVD drive)

I would Not plug an IDE harddrive, and an optical drive (CD/DVD drive), on that same flat ribbon IDE cable.

For additional questions please post in a Comment.
Regards,
joecoolvette


Aug 03, 2012 | ASUS Motherboard M4A88TD-V EVO/USB3 AM3...

1 Answer

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,

http://en.wikipedia.org/wiki/File:Mouse_printed_circuit_board_both_sides_IMG_0959a.JPG ]

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;
IDE (PATA) or SATA

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

Point?

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,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3195233&CatId=2783

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

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2145406&CatId=2780

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,

http://www.geeks.com/details.asp?invtid=0A26923-NDW-R&cat=HDD


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

Regards,
joecoolvette

Oct 15, 2011 | Iomega Prestige 1 TB USB 20 Hard Drive

1 Answer

I have several computers at home, and none og them can recognize this portable device. Hitachi 250 GB Mod: SDM/250RW


1) Power:

It may be the problem that occurs with a lot of USB powered devices jrherrer. Not enough power provided.

The USB cable plugged into the computer, provides signal wires for transferring information back, and forth, and also provides 5 Volts DC for power. (Two D cell flashlight batteries produce 3 Volts DC)

http://en.wikipedia.org/wiki/USB

[ Below shows the Signal pins, and the Voltage pins of the USB B Mini style connector, (Male), used to connect to the SimpleDrive Mini external harddrive,

Pin 1 is for the 5 Volts DC Positive (Wire color - Red)
Pin 2 is for the D- Signal (Wire color - White)
Pin 3 is for the D+ Signal (Wire color - Green)
Pin 4 is not connected. (Or sometimes joined to Pin 5 with a Resistor)
Pin 5 is for the Ground (Wire color - Black)

Just added info in case you wanted to know ]

From what I see the SDM/250RW has a USB port on the side, and a DC Power Jack, used for an AC adapter, also.
(Round port with a pin in the center)

http://www.hitachigst.com/tech/techlib.nsf/techdocs/0C876B7AB91B23988825773F006BEA02/$file/SD_Mini_DS_final.pdf


From what I see stated from Hitachi, and sellers on the 'net, the AC adapter may not be provided.
Many of those who provide a review state that both the USB cable, and the AC adapter is needed to provide enough power. Seems to be a power hungry external harddrive

It's a 2.5 Hitachi SATA laptop harddrive inside that external case. (The Harddrive is 2 and a half inches across in Width. Common size used for laptops)

When using an external device powered by a USB cable there are general guidelines to follow,
A) The USB cable should not be more than 2 feet in length
B) Connect the device directly to your computer, instead of through a hub, or other device, unless the USB hub has it's own power.


2) USB cable:

Could be a faulty USB cable, although I imagine you have tried different ones by now.


3) Interface Circuit Board:

The Hitachi SATA 2.5 harddrive inside the SImpleDrive Mini SDM/250RW, plugs into a small circuit board located inside that external case.

Components on the circuit board may be fried, or the Harddrive may have come loose from the interface.

Loose from the interface
To explain;
The back of the harddrive has connector pins sticking out.
The interface has socket holes which the pins insert into.

Faulty circuit board
The external case of the SimpleDrive Mini SDM/250RW can be carefully opened up, and the Hitachi SATA 2.5 harddrive extracted out.

Another inexpensive external case for a 2.5 SATA harddrive can be procured, and the Hitachi harddrive put in it.

Example of a 2.5 SATA external enclosure,

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3743049&CatId=2781

Nov 22, 2010 | Hitachi SimpleDrive Mini 250GB USB 20...

1 Answer

When hd is plugged in, it installs device and drivers automatically. it never shows up under my computer but in the taskbar it shows safely remove hardware. power light shows orange but harddrive light...


First make sure usb cable connected to harddrive is working fine. try it in different usb ports. Press windows key +R key so you can see run then type in run "devmgmt.msc" then press ok so you can see device manager uninstall all usb drivers then it automatic install usb drivers. then check. Also you need to change registry for that type in run "regedit" then press ok then you can see registry editor then locate below key. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11 CE-BFC1-08002BE10318} And remove upper filter and lower filter.Then restart computer then check. Let me know if you need further assistance. Thanks for using FixYa

Nov 14, 2010 | Seagate (9W2063500) 120 GB Hard Drive

1 Answer

My external Harddrive just up and stopped showing up on the computer. I mean the lights (red and blue) are on, it just doesnt show up. i even plugged both cables into my comp, and still nothing. I noticed...


First make sure usb cable connected to harddrive is working fine. try it in different usb ports. Press windows key +R key so you can see run then type in run "devmgmt.msc" then press ok so you can see device manager uninstall all usb drivers then it automatic install usb drivers. then check. Also you need to change registry for that type in run "regedit" then press ok then you can see registry editor then locate below key. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11 CE-BFC1-08002BE10318} And remove upper filter and lower filter.Then restart computer then check. Try your harddrive in different computer if it is not recognized on another computer too then power adapter of harddisk or your harddrive has internal issue.
Let me know if you need further assistance. Thanks for using FixYa

Oct 15, 2010 | SimpleTech SimpleDrive 160 GB External USB...

1 Answer

Dear Sir/ Madam, I have TWO Western Digital USB


first of all , you are looking at the wrong voltages. The important voltage is the DC OUTPUT, which is the voltage the external harddrives use AND the polarity of the plug attached to the harddrive end of the cable.
if both the harddrives have say 12v dc output and both have the insignia of the center conductor being + (posative) then you can interchange them. and you CAN run a 9volt unit with 12volt DC power, but not the other way around.
Look at your power adaptors again for the OUTPUT and polarity.
should be a half-circle with lines depicting the polarity(+,-) of the center and sheild connections to the hard drives printed on both the harddrives and the power adaptors . This can also be tested with a dc volt meter while the adaptors are plugged into the wall.
DO NOT try to test the AC end while plugged in!!
Regards

Aug 09, 2010 | Western Digital 250GB MyBook External USB...

1 Answer

My Western Digital 1TB hard drives do not power up when plugged into the USB Ports. No Blue light no nothing. I am however using the same power cable. I have changed the USB cable.


Seems like your case power is broken, check your warranty or buy a new one. to get your data back, open the case and unplug your harddriver, plug your driver in a PC computer and remove your important data.

You could also test a new power cable because it seems like your case doesent get any.

Aug 17, 2009 | Western Digital MyBook Studio 1 TB USB...

1 Answer

After a time, Computer not recognizing portable harddrive


Reformatting will be our last option and there are a number of steps that you can try to fix this.
  • Try plugging it in on a different USB port
  • Check the USB cable, try replacing it and see if it works
  • USB ports on your computer makes use of power, so if you have multiple USB devices plugged in, the portable hard drive might not be receiving enough power. Try plugging it in without your other USB devices, except the mouse of course

Please leave me a comment for this.

Jun 03, 2009 | SimpleTech Signature Mini 320GB External...

2 Answers

Unit doesn't work with vehicle power cable


if you are using the USB cable, that won't work. You must use the bracket plug. the USB cable will charge the unit and you can't use it while it's charging. If using the USB, the system thinks you are either charging the unit or connected to a computer. This is a design flaw.

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