I installed Arch-Linux-ARM on a 128GB SD-card for my Raspberry Pi. Now I want to make a backup.
There is less than 1.5GB of data on the SD card and if I want to make an image with DD, DD wants to read the entire card and make a 128GB backup.
How do I get DD to backup only the relevant 1.5GB?
I also have a 16GB SD-card and would like to restore the backup.img to this card or any other SD-card.
The Arch Linux is installed on the SD-card in two partitions, this should also be backed up so that I can copy a functioning system to any data carrier.