# Cyclic redundancy error

**URL:** <https://forums.speedlife.net/t/cyclic-redundancy-error/203625>\
**Category:** PittSpeed Off Topic\
**Created:** [September 4, 2009, 4:39am UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625 "2009-09-04T04:39:21Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\
**Post date:** [September 4, 2009, 4:39am UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625/1 "2009-09-04T04:39:21Z")

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I’m trying to copy several ~43GB files from an internal hard drive to either of two external USB drives. During the process I get a cyclic redundancy error regardless of which drive I try to copy to, so I would assume it’s not a bad sector on the USB drive (?).

I tried doing: copy file NUL: and there were no errors, so I don’t think the file is bad.

I’ve made it to this point with Google. I’m currently tying to copy a similar file on another machine to a different USB drive to see if it also gets an error. Also going to try copying to another internal drive once I clear some space. Any further ideas? File size related? USB drive related?

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**Author:** ![silvrhand](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@silvrhand](https://forums.speedlife.net/u/silvrhand)\
**Post date:** [September 4, 2009, 5:33am UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625/2 "2009-09-04T05:33:09Z")

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xcopy /c _._

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**Author:** ![S10Blazed\_Si](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/s10blazed_si/32/5983_2.png) [@S10Blazed\_Si](https://forums.speedlife.net/u/S10Blazed_Si)\
**Post date:** [September 4, 2009, 12:49pm UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625/3 "2009-09-04T12:49:40Z")

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NTFS or FAT?

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**Author:** ![Jeff95TA](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jeff95ta/32/5935_2.png) [@Jeff95TA](https://forums.speedlife.net/u/Jeff95TA)\
**Post date:** [September 4, 2009, 5:20pm UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625/4 "2009-09-04T17:20:38Z")

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NTFS due to the file sizes. I did a chkdsk and found some bad sectors. Hopefully that’s the problem.

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**Author:** ![BigMack\_Srt8](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bigmack_srt8/32/6025_2.png) [@BigMack\_Srt8](https://forums.speedlife.net/u/BigMack_Srt8)\
**Post date:** [September 4, 2009, 11:42pm UTC](https://forums.speedlife.net/t/cyclic-redundancy-error/203625/5 "2009-09-04T23:42:41Z")

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external hard drives ftw. Just picked up a 1tb from office max for $109.