我没有正确卸载我安装的新外部磁盘，如下所示：
jeremy@jr:~$ sudo mount -t exfat /dev/sdc1 /home/jeremy/exfat
FUSE exfat 1.2.3
现在我被困住了-
jeremy@jr:~$ df -h
df: /home/jeremy/exfat: Transport endpoint is not connected
Filesystem Size Used Avail Use% Mounted on
udev 3.8G 0 3.8G 0% /dev
tmpfs 765M 9.5M 756M 2% /run
/dev/sda1 213G 200G 2.1G 100% /
tmpfs 3.8G 165M 3.6G 5% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 3.8G 0 3.8G 0% /sys/fs/cgroup
cgmfs 100K 0 100K 0% /run/cgmanager/fs
tmpfs 765M 116K 765M 1% /run/user/1000
我不能前进（安装）或后退（卸载）-
jeremy@jr:~$ sudo mount -t exfat /dev/sdc1 /home/jeremy/exfat
FUSE exfat 1.2.3
fuse: failed to access mountpoint /home/jeremy/exfat: Transport endpoint is not connected
mtab 文件看起来像
jeremy@jr:~$ more /etc/mtab
....
/dev/sdb1 /home/jeremy/exfat fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0
我对事物的原始掌握使我尝试：
jeremy@jr:~$ ls /mnt
sdb1
jeremy@jr:~$ umount /mnt
umount: /mnt: not mounted
jeremy@jr:~$ umount /mnt/sdb1
umount: /mnt/sdb1: not mounted
jeremy@jr:~$ umount /home/jeremy/exfat
umount: /home/jeremy/exfat: Transport endpoint is not connected
因为磁盘现在出现在 /sdc1 后我徒劳地拔掉/重新插入它希望这会清除 /etc/mtab 我试过的条目：
jeremy@jr:~$ sudo mount -t exfat /dev/sdc1 /home/jeremy/exfat
FUSE exfat 1.2.3
fuse: failed to access mountpoint /home/jeremy/exfat: Transport endpoint is not connected
是的 - 这比交配狗更糟糕