CGS <[email protected]> wrote: > On 2026-10-07, nwe <[email protected]> wrote: > >One of my 32GB USB sticks here I dd copied an ISO-9660 to it then > >formatted the remaining space as an additional partition with > >FAT32. It is not very user friendly, most file browsers do not > >even list that second partition for me until I mount it manually > >at the terminal.</p> > > What's confusing to me is when you write the ISO to the thumb drive it > uses the entire space, though the drive might have a larger capacity > than the ISO itself. So where is the latter written: At the beginning, the > end, > in the middle, or all over the place? Could you have a partition at the > "end" of the drive and use some tool to write the ISO at the "beginning" > so that the end partition is preserved? I've never heard of that being > done; it's always the inverse case, like your own. ISO first, then data > partition (I think the term they used to use was "persistence").
If you use dd then it simply copies the source file (.iso on your case) byte by byte to the destination USB stick. So if your .iso is, say, 100Mb then 100Mb will be written to the USB stick starting at the first byte. (OK, in reality it writes a block at a time, but the result is as I describe) -- Chris Green ยท
