+# cp $OPT ./tool/i386/mount.exfat-fuse $tmpmnt/tool/mount.exfat-fuse_i386
+# cp $OPT ./tool/x86_64/mount.exfat-fuse $tmpmnt/tool/mount.exfat-fuse_x86_64
+# cp $OPT ./tool/aarch64/mount.exfat-fuse $tmpmnt/tool/mount.exfat-fuse_aarch64
+# to save space
+dd status=none bs=1024 count=16 if=./tool/i386/vtoycli of=$tmpmnt/tool/mount.exfat-fuse_i386
+dd status=none bs=1024 count=16 if=./tool/x86_64/vtoycli of=$tmpmnt/tool/mount.exfat-fuse_x86_64
+dd status=none bs=1024 count=16 if=./tool/aarch64/vtoycli of=$tmpmnt/tool/mount.exfat-fuse_aarch64
+