# RCM6700 FileSytem Error

**URL:** <https://forums.digi.com/t/rcm6700-filesytem-error/10718>\
**Category:** Rabbit\
**Created:** [September 25, 2012, 7:03pm UTC](https://forums.digi.com/t/rcm6700-filesytem-error/10718 "2012-09-25T19:03:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![fbaldoni](https://avatars.discourse-cdn.com/v4/letter/f/47e85d/32.png) [@fbaldoni](https://forums.digi.com/u/fbaldoni)\
**Post date:** [September 25, 2012, 7:03pm UTC](https://forums.digi.com/t/rcm6700-filesytem-error/10718/1 "2012-09-25T19:03:02Z")

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I’m using the example FileSystem\ FAT\ updpages.c  
After loading some files, if I turn off and on the rcm6700, the FAT is corrupted and lose some files.  
I do not know why, who can help me?  
I have to save the web interface on serial flash.  
Thanks All.

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**Author:** ![petermcs](https://avatars.discourse-cdn.com/v4/letter/p/4af34b/32.png) [@petermcs](https://forums.digi.com/u/petermcs)\
**Post date:** [September 26, 2012, 9:58am UTC](https://forums.digi.com/t/rcm6700-filesytem-error/10718/2 "2012-09-26T09:58:16Z")

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You need to have a battery connected to the RCM6700 to backup the internal RAM if you are using the FAT libraries. I think there is a pair of pins on the dev kit board to allow you do this.

Regards,  
Peter