> Try the same mkfs command and add the number of > seconds on the device at the end.
$ pfexec mkfs -F udfs /dev/rdsk/c1t0d0p0 31719424 Vtoc.v_sanity != VTOC_SANE Creating file system with sector size of 512 bytes Afterwards, tested with: $ pfexec fstyp -v /dev/rdsk/c1t0d0p0 unknown_fstyp (no matches) It looks like the filesystem was not created, and the USB drive is steal readable as NTFS on other machine. $ pfexec mount -F udfs /dev/rdsk/c0t0d0p0 /mnt/usb mount: /dev/rdsk/c0t0d0p0 not a block device -- This message posted from opensolaris.org