Image file, compressed (2.2MB):
I have taken the time to write a very nice documentation page:
Comments:Posted on 7 Jul 2012, 10:35 by BarryK
Optimise f.s. for Flash
Here is another interesting read:
Posted on 7 Jul 2012, 11:11 by technosaurus
I seem to recall being able to get better img compression after mounting a filesystem and then
cat /dev/zero >mountpoint/tmp
#Zeroed bits compress better
(bz2 seemed to compress best on mostly empty filesystems)
... Should work on all except swap (you have to zero it out before mkswapping it)
Posted on 7 Jul 2012, 21:04 by BarryK
Re compressed image
I did that. My technique is to use 'dd'
# dd if=/dev/zero of=dummyfile
# rm dummyfile
This will create 'dummyfile' that fills all of the free memory space.
I think that the 'sync' is important, to ensure that the zeros are all flushed to the SD card before the file is deleted.