On Ma, 24 mar 20, 19:12:46, Gene Heskett wrote: > > And nothing so far, and I have been watching, in the way of reducing a > filesystem to only the actual size occupied. Then it can be backed up > with dd and recovered, rewritten by dd, at a reasonable size for > storage. And re-expanded to fit the media it finds.
You could do this with the 'sparse' option of dd (you might need to fill the partition with a file containing only zeroes first). The resulting file must be handled with care as many tools (cp, rsync) will un-sparse it by default, as will writing it to a filesystem without support for sparse files (tar it first). To see the actual size with ls you will have to use -s/--size. > All of my attempts to do that with dd alone have been thwarted by the > fact that I have yet to find two u-sd's marked as such and such a > capacity, that actually were the same size. Just create the partitions slightly smaller than the size of the SD card. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
signature.asc
Description: PGP signature
