Can't flash smaller root-fs through dfu-util?

Petr Stetiar ynezz at
Tue Aug 21 10:39:52 CEST 2007

Dr. H. Nikolaus Schaller <hns at> [2007-08-19 21:23:08]:

> After unsuccessfully flashing different root-filesystems, I finally  
> found this note:
> >If you upload rootfs image that is smaller that previous one it  
> >won't work - you need to attach to bootloader, erase NAND and then  
> >upload your rootfs first:
> >
> >cu -l /dev/ttyACM0
> >GTA01Bv3 # nand erase rootfs
> This *should* help but I am trying to understand why dfu-util can't  
> do that? And what do I do if I have no serial interface? Does this  
> mean I can't ever again flash a (smaller) rootfs?

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