Question about Buffalo Technology (USA), INC. - 500GB DRIVESTATION EXTERNAL USB 500 GB Hard Drive

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I get I/o device error message while opening my external drive.

I couldn't open my 470 GB data from my external drive.

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This indicates a physical failure with the drive. Mostly too many bad sectors. Good advice here is to shut it down, and not try to work with it any longer, as what ever you are doing without professional tools will only make the drive fail faster, and ultimately permanently.

Once a platter has too many bad sectors, you can do nothing more with it. Bad sectors cannot be repaired.

This link can help you learn a little bit more about failing drives and errors, but in your case you will need professional tool to safely get your data back.

Posted on Mar 21, 2014

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Sometimes this can be an indication your drive is beginning to fail. I would extract the drive from it's shell to rule out the shell/caddie as the problem. Then run diagnostics on the drive using Seatools:
SeaTools Seagate

Posted on Mar 21, 2014

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SOURCE: External hard drive not recognized

Some of the externals have mapping issues in Windows.  Although the TB shows in devices, you may need to remap it (right click on My Computer for mapping options) and in some cases, changing the drive letter will fix your problem.  There's really no 1 definitive solution for these.  If you're unable to fix the problem by remapping or changing the drive letter, you can partition the drive to recover your data.  As far as the slow transfer rate goes, almost all externals are formatted in FAT.  This has issues of its own with safely removing devices and slow transfer rates.  I prefer to format my externals and flash drives in NTSF for more reliability.  Best of luck.

Posted on Jul 21, 2009

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1 Answer

Can't use


Just plug it in to your computers usb port make sure its connected properly
An example on how to download and save to an External Hard Drive and copy and paste to an External Hard Drive Click start all programs accessories open windows explorer navigate to your data
Right click on the data select copy navigate back to the External Drive.

or right click on the data select paste or select the data hold the mouse cursor then drag the data to your usb drive then drop it in
or if you are downloading data from the internet.


Once it starts downloading windows will ask whether you want to run or save it
a browse option will open you can save it into your External Drive or a folder in my documents or another device or a usb device
if you need more help with this post a reply Hope this helps.

Dec 23, 2012 | SanDisk 16GB Ultra Backup USB 20 Flash...

1 Answer

IO error


The message "The Request Could Not Be Performed Because of an I/O Device Error" appears when Windows is unable to read the data on a storage device.


If this error message appears when attempting to access the files on an input/output

(I/O or IO) device, such as an external hard drive, the file system on the drive could be damaged, the drive could be infected with a virus or the data connector inside the device enclosure could have come loose.


If troubleshooting the drive fails to fix the IO device error, formatting the drive might repair the device.

Connect the external hard drive to the computer.


Run an antivirus program.


Click the "Scan" tab or button, then click "Custom."

Uncheck all items in the list except for the drive letter assigned to the external drive.


Click "OK." Click "Scan" or "Scan Now" to run a virus scan on the hard drive.

Quarantine or remove any infections the virus scanner detects.


Click "Start." Input "cmd.exe" into the search field.

Press "Enter" to open Command Prompt. Input "chkdsk <drive>: /f /r" into Command Prompt.


Replace "<drive>" with the letter assigned to your external hard drive.

Press "Enter" to run CheckDisk on the drive.


CheckDisk will search for and repair detected errors or bad sectors.


Burn the files on the external hard drive to a set of DVDs or move the files to another drive, if possible.

If the IO device error reappears when attempting to move the files, disconnect the external hard drive from the computer.


Remove the power adapter from the drive.

Check the documentation included with the drive for instructions to take the drive apart.


If no instructions are available, contact the manufacturer for instructions or find out if disassembling the drive will void the drive's warranty.


Remove the screws securing the faceplate to the drive or from the edge of the enclosure. Insert the edge of a small, flathead screwdriver in between either side of the enclosure to wedge both sides apart.


Check the connections to the drive.

Confirm that the IDE or SATA interface is plugged into the back of the drive.


Reassemble the external hard drive, reconnect the power adapter and reconnect the drive to the PC.


Attempt to access the files on the drive.

If the IO device error reappears, return to Command Prompt. Input "format /fs:fat32 <drive>:" into the command-line prompt.


Replace "<drive>" with the letter assigned to the external hard drive.


Press "y" when the message "Proceed with Format (Y/N)?" appears.

The process will format the drive, erasing all data on the disk.


If the drive still fails to function after format, you will need to replace the drive.


Hope this helps




Nov 25, 2012 | Western Digital WD5000AAVS 500 GB SATA II...

1 Answer

HI GOOD EVENING I AM UNABLE TO COPY MY MICROSOFT OUTLOOK 2007 PST FILE TO EXTERNAL HARD DISK. AFTER STARTING COPY FEW MINUTES LATER I FACE THE FOLLOWING PROBLUM CANNOT COPY OUTLOOK:DATA ERROR(CYCLIC...


A "CRC" (Cyclic Redundancy Check) is caused by an disk-drive error.

When you write a "block' of data to your disk-drive, a CRC value is calculated, and is also written to the disk. When you try to read that "block" of data, the CRC value is also read from the disk,
and a new CRC is calculated from the data. If the "new" CRC does not match the "old" CRC, then you have a "check" condition -- either the data was not written correctly, or the data could not be read correctly.

Now, did the "check" message refer to the "source" of the copying operation (namely your 'C:' drive) , or the "target"(namely the external drive) ???

Try to copy the PST file to another file on your 'C:' drive.
If you do not see the "check", then it is the external disk-drive that has a problem.
If you do see the "check", then open Outlook, create a new folder,
and copy a group of messages into the new folder. If Outlook reports that one of the messages could not be copied, then the disk-space occupied by that message is faulty, and must be excluded.

Sep 07, 2010 | Computers & Internet

1 Answer

External hard drive not recognized


Some of the externals have mapping issues in Windows.  Although the TB shows in devices, you may need to remap it (right click on My Computer for mapping options) and in some cases, changing the drive letter will fix your problem.  There's really no 1 definitive solution for these.  If you're unable to fix the problem by remapping or changing the drive letter, you can partition the drive to recover your data.  As far as the slow transfer rate goes, almost all externals are formatted in FAT.  This has issues of its own with safely removing devices and slow transfer rates.  I prefer to format my externals and flash drives in NTSF for more reliability.  Best of luck.

Jul 21, 2009 | Buffalo Technology Computers & Internet

1 Answer

About my seagate 160 gb hard drive (external)


i hav usb seagate 160 gb hard disk.nw it is nt getting open message is the file or directory is corrupted or unreadable........CHKDSK is also not working for it.error is "unable to determine volume version and start"....plz help fast

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1 Answer

Exact Error


How important is the data on the drive exactly?

Jun 18, 2008 | ACP Cavalry (CAUE37500) 500 GB USB 2.0...

1 Answer

Toshiba Hard Drive Crash


Hi,
if the datas aleady deleted, then you have nothing to lose. Right ?
What you need is a 2.5 to 3.5 inch IDE ribbon cable connector.
this will enable you to put the drive into an IDE slot on the PC internal motherboard ( primary/secondary )
Unless it,s already 3.5"
boot the computer, see if it recognises the drive. And format it.
then you may be able, to re-fit back into the external casing, and use as an external again.
Mike @ compurepair.

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