EC2实例,安装卷DOS/MBR引导扇区

我正在尝试将主要的/ dev/sda1来自EC2实例挂载到新实例,但是我遇到了以下问题:

$ sudo mount -t ext4 /dev/xvdg /mnt/xvdg/
mount: wrong fs type, bad option, bad superblock on /dev/xvdg,
       missing codepage or helper program, or other error

       In some cases useful info is found in syslog - try
       dmesg | tail or so.

来自dmesg的信息:

$ dmesg | tail
[  673.481965]  xvdg: xvdg1
[  673.589140]  xvdg: xvdg1
[  673.711554]  xvdg: xvdg1
[  673.802113]  xvdg: xvdg1
[  673.872627]  xvdg: xvdg1
[  673.978105]  xvdg: xvdg1
[10382.432880] EXT4-fs (xvdg): VFS: Can't find ext4 filesystem

更多信息:

$ sudo fdisk -l /dev/xvdg
Disk /dev/xvdg: 16 GiB, 17179869184 bytes, 33554432 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
Disklabel type: dos
Disk identifier: 0x00000000

Device     Boot Start      End  Sectors Size Id Type
/dev/xvdg1 *    16065 33543719 33527655  16G 83 Linux
Looking for more info, got to this link 

我还按照这些步骤来修复损坏的Ext4 Superblock.但它不起作用.

磁盘已分区,请改用:

$ sudo mount /dev/xvdg1 /mnt/xvdg/