我有一个 USB，其中有一个受保护的分区。我认为这个USB有隐藏分区，我看不到它们。
$ fdisk -l /dev/sdb:
You must set cylinders.
You can do this from the extra functions menu.
Disk /dev/sdd: 0 MB, 18432 bytes
8 heads, 63 sectors/track, 0 cylinders
Units = cylinders of 504 * 512 = 258048 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xea168bf5
Device Boot Start End Blocks Id System
/dev/sdd1 * 1 1 15+ 1 FAT12
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(0, 1, 1) logical=(0, 0, 2)
Partition 1 has different physical/logical endings:
phys=(998, 7, 63) logical=(0, 0, 32
$ ls -l /dev/sdd*:
brw-rw----. 1 root disk 8, 48 Jul 4 13:07 /dev/sdd
brw-rw----. 1 root disk 8, 49 Jul 4 13:07 /dev/sdd1
$ parted /dev/sdd:
Warning: Unable to open /dev/sdd read-write (Read-only file system). /dev/sdd has been opened read-only.
Warning: Unable to open /dev/sdd read-write (Read-only file system). /dev/sdd has been opened read-only.
我hdparm -r0 /dev/sdd也用过，但是什么都没发生！
问题：如何找到隐藏分区并挂载它们来复制文件？