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The error message is literally telling you exactly what's wrong: there was an input/output error on the device.

Windows 7 Home Premium running on an Acer Aspire Notebook. Following the instructions here in how to create a Windows 7 system backup and repair disc, after purchasing a Seagate Expansion External drive, 3 TB. It went OK up to Windows saving the backup, "Preparing to create the backup". Then the following wording appeared: "One of the backup files could not be created," with an error number. Additional information: "The request could not be performed because of an I/O device error," with another error number.

In this excerpt from Answercast #61, I look at a new external drive that is showing an input/output error.

Input/Output error

In this kind of a situation, my tendency is to believe the error message.

The error message is literally telling you exactly what's wrong. There was an I/O (an Input Output) error on a device. Since it says the file could not be created, my assumption is the I/O error happened on your external drive; the drive that the backup was being written to.

Check the drive

Now, exactly what happens next really varies.

One thing I would do is I would run ChkDsk /R on that external drive. So if the drive is Drive letter F: for example, then in a command prompt, run "chkdsk /r f:" and then hit the Enter key.

ChkDsk will actually check the surface of that drive to see if there are problems on it, and potentially, it will mark bad sectors on that drive as being bad.

If that doesn't resolve the problem, I'd be seriously tempted to return that external drive for warranty work. It shouldn't have any problems when you get it out of the box like that and this definitely does feel like a problem on that external drive.

So, those are the things that I would do, the directions I would heed. The error message is actually telling you the truth in my opinion. It is telling exactly what's wrong. The trick is understanding that what it means is there's a problem with that external drive.

Article C5914 - October 13, 2012 « »

Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

Not what you needed?


October 16, 2012 12:34 PM

Hi Leo, a call to Support at Seagate with a copy
of the error code and a description of what was
being done will get some quick help. Those guys
are good.

October 16, 2012 1:16 PM

You could try to copy a few picture or music files to the disk in question. If it lets you copy & retrieve the file(s) then there is probably nothing wrong with the drive. If it won't, then return it to where you bought it and get a replacement. I wouldn't worry about warantee work & all that so early in the game. Most stores, online as well, give you at least a 90 day return policy.
If it's giving you problems right from the box, I wouldn't trust it now, or ever.
Also, sometimes the program(s) these "expansion, backup" drives utilize are not the most easy to maneuver through even though the claim on the box states such.
The last one I used I wiped the whole thing and used Macrium. Of course, doing this WILL void the warantee.
Just a few things to consider?

stan walden
October 16, 2012 8:57 PM

Fixed. Thank you.

'Windows has checked the file system and found no problems'

Have now completed the download of my internal hardrive to the 3TB Seagate external harddrive.

October 17, 2012 6:36 AM

It sounds like you are using the Backup program in Windows. I have the exact same problem. My external drive was a Western Digital.

I believe that the problem is the Windows software. I solved the problem by using different backup software. Macrium (which Leo recommends) does have a free option, if you don't want to pay for it. However, I understand the free option has some limitations.

I went with EaseUS Todo Backup (again they have both a paid and free version). I went with the free version. It seems to do everything that Leo recommends that a backup program should do.

I've started doing my backups with EaseUS instead of fighting with Windows Bakckup and have not seen that error ever again.

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