Hi Jan,

Current architecture: armhf

Qemu: qemu-arm-static

To reproduce the bug I jumped into the buildchroot and typed the following:

I tested it with mcopy version 4.0.18 and 4.0.23, with same results.

sudo chroot buildchroot-target-debian-buster-armhf/rootfs

cd /tmp

mkdosfs -n test -S 512 -C test.img $((512*2*1024*100))

mkdir testfolder

touch testfolder/testtestfile1

touch testfolder/testtestfile1

export MTOOLS_SKIP_CHECK=1

mcopy -v -i test.img -s testfolder/ ::/

> Copying testfolder

sudo chroot buildchroot-host-debian-buster-armhf/rootfs

apt-get install mtools dosfstools

cd /tmp

mkdosfs -n test -S 512 -C test.img $((512*2*1024*100))

mkdir testfolder

touch testfolder/testtestfile1

touch testfolder/testtestfile1

export MTOOLS_SKIP_CHECK=1

mcopy -v -i test.img -s testfolder/ ::/
> Copying testfolder
> Copying testfile2
> Copying testfile1

Greets