Valliant wrote: ↑
Wed Apr 10, 2019 12:04 pm
thank you for reply me.
i know etcher will erase everything on my SDcard, but it will create a boot and ext4 partitions using the backup IMG file ?
" it will create a boot and ext4 partitions using the backup IMG file ?"
That is impossible to answer with certainty, since noone in the forums, other than yourself, can know what is contained in the .IMG file you are planning to work with.
If the .IMG file was correctly written in the first instance to capture the boot and root partitions from a working micro SD card, then Etcher will faithfully recreate them in another microSD card.
But Etcher does not know or care what is represented by the .IMG file - it will simply transfer the data onto the micro SD card. If the .IMG contains indecipherable rubbish, that rubbish will be written to the microSD card.