Symbol: FATMIRROR
sys/msdosfs/msdosfs_vfsops.c
329
if (getushort(b710->bpbExtFlags) & FATMIRROR)
usr.sbin/makefs/msdos/msdosfs_vfsops.c
177
if ((getushort(b710->bpbExtFlags) & FATMIRROR) == 0)