linux - Extracting/Writing core 2Gb image from 8Gb SD card -

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i burned 2gb linux image 8gb, made tuning , archive future use. but, when saving image disk, resulting file 8gb large. how can extract 2gb "core" ? of course, did not expand initial 2gb tot full 8gb. when running df, available linux partition 2gb. used win32diskimager write initial image sd card , write disk after tweaking.

try linux tools 'dd' may meet requirement,the whole command should like:

dd if=/dev/mmc_xx of=mmc.img bs=2048 count=1024000

please replace mmc_xx sd name. keep in mind result of bs*count couldn't less 2g bytes.


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