B_FORCE_UNMOUNT
status_t status = _kern_unmount(bsdVolume->mnt_stat.f_mntonname, B_FORCE_UNMOUNT);
status = partition->Unmount(B_FORCE_UNMOUNT);
flags |= B_FORCE_UNMOUNT;
status = partition->Unmount(B_FORCE_UNMOUNT);
status = fs_unmount_volume(mountPoint.Path(), B_FORCE_UNMOUNT);
B_FORCE_UNMOUNT | B_UNMOUNT_BUSY_PARTITION);
if ((flags & B_FORCE_UNMOUNT) == 0)