# NVRAM last sector, how implemented on 2/4MB flash

**URL:** <https://forums.digi.com/t/nvram-last-sector-how-implemented-on-2-4mb-flash/4858>\
**Category:** NET+OS\
**Tags:** nvram, hardware\
**Created:** [November 25, 2010, 12:07pm UTC](https://forums.digi.com/t/nvram-last-sector-how-implemented-on-2-4mb-flash/4858 "2010-11-25T12:07:06Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sz.tarnowski](https://avatars.discourse-cdn.com/v4/letter/s/cdc98d/32.png) [@sz.tarnowski](https://forums.digi.com/u/sz.tarnowski)\
**Post date:** [November 25, 2010, 12:07pm UTC](https://forums.digi.com/t/nvram-last-sector-how-implemented-on-2-4mb-flash/4858/1 "2010-11-25T12:07:06Z")

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I have some issue with loosing whole nvram configuration at 9c9215 board. I suspect that problem is with flash size. I have a feeling that nvram is located at different addres according software configuration.  
For example if I use one application compiled for 2MB flash and its save configuration at last flash sector and then I use application prepared for 4MB flash it may read board configuration from different address (which is invalid).  
Is this my personal feeling or is it true?