Windows Backup nearly completes but fails with 0x81000001 error

Anonymous
2010-08-04T12:36:12+00:00

I've been trying for a long while to backup to a 1.5TB hard drive. I have my documents on my E: drive and my Windows 7 installation on my C: drive. Windows backup is set to backup my E: drive and also a system image to my backup I: drive. There's plenty of space on it - it's completely blank.

Every time I try to run Windows Backup, it almost completes, then at the last moment I'm told it's failed with error 0x81000001 - "an internal error", which isn't very informative.

I've run error checks on the backup hard drive and haven't found any problems. Also run sfc - no problems found.

Has anyone any suggestions?

Thanks.

Windows for home | Previous Windows versions | Windows update

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  1. Anonymous
    2010-11-24T01:18:07+00:00

    I'm about to publish my results on my web site within the day or two. However I still need to try a few more things for your specific case of very large files and may not be part of the article.

    Sorry for the delay. But it takes multple test and verification, documenting and more testing, revising the documentation, try variations and so on. Took more time than planned.

    JS

    http://www.pagestart.com

    Never be afraid to ask. This forum has some of the best people in the world available to help.

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  2. Anonymous
    2010-11-23T23:17:50+00:00

    I think I have a clue as to what the problem may be. As soon as I finish my eval of the Windows 7 SP1 RC I'll try to reproduce the error and see if the fix (System Reserved partition may be too small) works.

    JS

    http://www.pagestart.com

    Never be afraid to ask. This forum has some of the best people in the world available to help.

    Hi JS,

    Just wondering - have you managed to try reproducing the error and testing a possible solution?

    Thanks,

    Andrew

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  3. Anonymous
    2010-10-31T20:27:12+00:00

    I think I have a clue as to what the problem may be. As soon as I finish my eval of the Windows 7 SP1 RC I'll try to reproduce the error and see if the fix (System Reserved partition may be too small) works.

    JS

    http://www.pagestart.com

    Never be afraid to ask. This forum has some of the best people in the world available to help.

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  4. Anonymous
    2010-10-31T18:24:47+00:00

    Some more information. After generating some huge files, it appears that Windows Backup has particular difficulty with files around 151GB in size. I haven't managed to track down the precise threshold size when the errors start, but it's somewhere between 151GB and 155GB.

    Obviously it takes a long time for me to generate the files and test the backup process (pretty much only 1 per day), so if anyone has a similar problem or can reproduce the error, I'd be interested to hear of it.

    Thanks,

    Andrew

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  5. Anonymous
    2010-09-29T16:42:22+00:00

    Normally it would not as you mentioned, but I'll still look into it a bit more.

    Thanks for the update.

    JS

    http://www.pagestart.com

    Never be afraid to ask. This forum has some of the best people in the world available to help.

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