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Windows back up will not back up on 3Tb extrnal drive


tmr

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I have just purchased a Buffalo HD-LBU2 3Tb hard drive which will not back up Windows 7. Windows back up returns a message that “One of the backup files could not be created. Error Code 0x8078002A I/O DEVICE ERROR 0X8007045d” I am running Windows 7 SP1 and both my System drive and the external drive are formatted as NTFS

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Chronos the 2nd

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Might be something here. Google.

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rdave13

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Have a look at this thread. Apparently '2.2TB is the limit for MBR partitions'. Look at Hawkeye22's reply especially. Worth reading it all and consider buying a decent backup software.

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wee eddie

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Why not Partition the Drive ~ Problem solved

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tmr

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Thanks for your help guys. The Problem has been solved by reformating the external drive with GPT partition style which gave a 512 byte file sector size instead of the previosly factory MBR partition with 4096 byte sector size. The programme I used was Diskfomatter light which was included on the original drive by Buffalo but which I had not realised contained alternative formatting styles for their Drives.

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