I have done more tests based on your suggestion and I think it is the opposite. The problem happens is the source is APFS.
Following failed: APFS -> ExFAT APFS -> Fat32 Following worked: ExFAT -> APFS FAT32 -> APFS So for now my workaround is to use USB stick formatted with FAT32 or ExFAT, copy the source images there and then convert to somewhere or my main drive with APFS. My regards, Waldek Sent from my iPhone > On Jun 20, 2018, at 11:54, John Snow <1776...@bugs.launchpad.net> wrote: > > I haven't had the time to look just yet. > > If there's a developer out there with a Mac has the bandwidth to take a > look at this I'd be grateful. (I don't have access to one presently.) > > I see that the target filesystem is APFS however -- I think we might > have a bug in our APFS support. Do you have the ability to try it on > your Mac but on a non-APFS destination? > > It looks like the image is pretty small (~6MB?) so maybe you can try > with a non-APFS formatted thumb drive? > > My hunch is that: > - APFS source to FAT32 destination might work correctly. > - FAT32 source to FAT32 destination will definitely work correctly. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1776920 > > Title: > qemu-img convert on Mac OSX creates corrupt images > > Status in QEMU: > New > > Bug description: > An image created by qemu-img create, then modified by another program > is converted to bad/corrupt image when using convert sub command on > Mac OSX. The same convert works on Linux. The version of qemu-img is > 2.12. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/qemu/+bug/1776920/+subscriptions -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1776920 Title: qemu-img convert on Mac OSX creates corrupt images Status in QEMU: New Bug description: An image created by qemu-img create, then modified by another program is converted to bad/corrupt image when using convert sub command on Mac OSX. The same convert works on Linux. The version of qemu-img is 2.12. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1776920/+subscriptions
