MSDOSFS_ERR_RO
pmp->pm_flags &= ~MSDOSFS_ERR_RO;
if ((pmp->pm_flags & MSDOSFS_ERR_RO) != 0)
if ((pmp->pm_flags & MSDOSFS_ERR_RO) != 0) {
while ((pmp->pm_flags & MSDOSFS_ERR_RO) != 0)
pmp->pm_flags |= MSDOSFS_ERR_RO;