other: 0.958 files: 0.911 graphic: 0.863 device: 0.839 network: 0.690 vnc: 0.674 socket: 0.494 performance: 0.482 semantic: 0.403 debug: 0.342 boot: 0.293 PID: 0.287 permissions: 0.202 KVM: 0.004 VVFAT :rw writes from guest (ReactOS, windowsXP) not visible by host Description of problem: As described in https://jira.reactos.org/browse/CORE-18327 While ./LMS is mounted as a :rw VVFAT drive, guest OS (ReactOS) is able to read files BUT when files are "written" from the guest, they are not visible on host side. QEMU execution is also massively polluted by "invalid file name" messages coming from https://git.qemu.org/?p=qemu.git;a=blob_plain;f=block/vvfat.c;hb=HEAD (but this is not specific to the use with ReactOS, as this is also observed with other guest : WXP, ...) See attached screenshot showing WXPSP3 as guest with file created in VVFAT drive while guest misses the newly created file.