Yes you can copy a GNU linux from a filesystem off to another. Basically:
cp -dpr sdcard_source/* tmp/
then replace the card,
cp -dpr tmp/* sdcard_dest/
and it works exactly the same.
I got a bit of experience running on low space; I run debian totally on RAM, 2 giga, with harddisk used only for booting init and root disk image, otherwise it's turned off and never used in session.
I use a compressed reiser4 filesystem which at the current status is able to hold a full home system in RAM: 4 GB of data is compressed in 800 MB, transparently, usably, and savable back to harddisk at shutdown.
Maybe this interests you, too.
|