我需要一些帮助！
事实：
当我插入外部硬盘 (Samsung M3 Portable) 时，我尝试安装 microSD 卡，但在命令行中出现以下错误后，事情就出错了：
sudo wipefs --all --force /dev/mmcblk0p1 sudo dd if=/dev/zero of=/dev/sdb && sync status=progress
我在命令发出后 5-10 秒停止了它
我的外部硬盘自动安装为 sdb1，sdb 的一个分区，顺便说一下，当我插入闪存驱动器时，它会像 sdb1 一样运行良好。但每次我插入硬盘时，我都看不到它！
说签名丢失，NTFS缺失。
请查看一些命令的几个输出：
fdisk -l:
root@euro-VGN-CR525E:~# fdisk -l
Disk /dev/loop0: 88,5 MiB, 92778496 bytes, 181208 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/loop1: 88,4 MiB, 92692480 bytes, 181040 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/sda: 465,8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0xe9d95eb8
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 970500095 970498048 462,8G 83 Linux
/dev/sda2 970502142 976771071 6268930 3G 5 Extended
/dev/sda5 970502144 976771071 6268928 3G 82 Linux swap / Solaris
Partition 2 does not start on physical sector boundary.
Disk /dev/sdb: 931,5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
2) df -h
**************************************************************************
root@euro-VGN-CR525E:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 1,5G 0 1,5G 0% /dev
tmpfs 300M 13M 288M 5% /run
/dev/sda1 456G 19G 415G 5% /
tmpfs 1,5G 4,8M 1,5G 1% /dev/shm
tmpfs 5,0M 4,0K 5,0M 1% /run/lock
tmpfs 1,5G 0 1,5G 0% /sys/fs/cgroup
/dev/loop1 89M 89M 0 100% /snap/core/7169
/dev/loop0 89M 89M 0 100% /snap/core/7270
tmpfs 300M 116K 300M 1% /run/user/1000
**************************************************************************
3) blkid
**************************************************************************
root@euro-VGN-CR525E:~# blkid
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/sda1: UUID="06d633cc-3915-4e7f-bab4-1fa589a1e571" TYPE="ext4" PARTUUID="e9d95eb8-01"
/dev/sda5: UUID="808ee427-e534-4451-91ae-4d502d0cdc9d" TYPE="swap" PARTUUID="e9d95eb8-05"
**************************************************************************
4) fsck -n /dev/sdb
**************************************************************************
root@euro-VGN-CR525E:~# fsck -n /dev/sdb
fsck from util-linux 2.27.1
e2fsck 1.42.13 (17-May-2015)
ext2fs_open2: Bad magic number in super-block
fsck.ext2: Superblock invalid, trying backup blocks...
fsck.ext2: Bad magic number in super-block while trying to open /dev/sdb
The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem. If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>
or
e2fsck -b 32768 <device>
**************************************************************************
5) lsblk
**************************************************************************
root@euro-VGN-CR525E:~# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 465,8G 0 disk
├─sda1 8:1 0 462,8G 0 part /
└─sda5 8:5 0 3G 0 part [SWAP]
sdb 8:16 0 931,5G 0 disk
sr0 11:0 1 1024M 0 rom
loop0 7:0 0 88,5M 1 loop /snap/core/7270
loop1 7:1 0 88,4M 1 loop /snap/core/7169
可以恢复数据吗？
提前致谢！