好吧，我正在我的系统上工作，没什么特别的（而且绝对没有任何可能导致此问题的原因），突然我看到我的主数据分区从已安装分区列表中消失，所以我决定运行 GParted 看看它是否可以告诉我原因
Unable to find mount point
Unable to read the contents of this file
system! Because of this some operations may be unavailable
所以我觉得“这很奇怪”，并决定 GParted 这次没用了，所以我在终端中运行了一些命令，看看能否解决这个问题
zero@hhs-dev9 ~ $ sudo blkid
[sudo] password for zero:
/dev/sda1: LABEL="System Reserved" UUID="20820BC1820B9A84" TYPE="ntfs"
/dev/sda2: UUID="8CE22AC7E22AB4FC" TYPE="ntfs"
/dev/sda3: UUID="eeb8ea7f-7507-4b4c-9a4d-b75a871b7aba" TYPE="ext4"
/dev/sda4: UUID="2E652F573B232F6D" TYPE="ntfs"
zero@hhs-dev9 ~ $ sudo umount /dev/sda4
umount: /media/2E652F573B232F6D: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
zero@hhs-dev9 ~ $ lsof /dev/sda4
lsof: WARNING: can't stat() fuseblk file system /media/2E652F573B232F6D
Output information may be incomplete.
因此，快速回顾一下我的意图：检查 UUID 是否正确，是的。好的，然后我将卸载并重新安装它... 是的，没有用。
然后我尝试这个
zero@hhs-dev9 ~ $ sudo parted /dev/sda4 unit s print
Model: Unknown (unknown)
Disk /dev/sda4: 385789952s
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0s 385789951s 385789952s ntfs
zero@hhs-dev9 ~ $ sudo fdisk -l -u
Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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 identifier: 0x8028af30
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 206848 51406847 25600000 7 HPFS/NTFS/exFAT
/dev/sda3 51406848 102606847 25600000 83 Linux
/dev/sda4 102606848 488396799 192894976 7 HPFS/NTFS/exFAT
zero@hhs-dev9 ~ $ sudo parted /dev/sda unit s print
Model: ATA TOSHIBA MK2576GS (scsi)
Disk /dev/sda: 488397168s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
1 2048s 206847s 204800s primary ntfs boot
2 206848s 51406847s 51200000s primary ntfs
3 51406848s 102606847s 51200000s primary ext4
4 102606848s 488396799s 385789952s primary ntfs
zero@hhs-dev9 ~ $ cat /proc/mounts
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10240k,nr_inodes=738214,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=592156k,mode=755 0 0
/dev/disk/by-uuid/eeb8ea7f-7507-4b4c-9a4d-b75a871b7aba / ext4 rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=1184300k 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0
cgroup /dev/cgroup/cpu cgroup rw,relatime,cpu,release_agent=/usr/local/sbin/cgroup_clean 0 0
/dev/sda4 /media/2E652F573B232F6D fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0
zero@hhs-dev9 ~ $ cat /proc/swaps
Filename Type Size Used Priority
zero@hhs-dev9 ~ $ cat /etc/mtab
rootfs / rootfs rw 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10240k,nr_inodes=738214,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=592156k,mode=755 0 0
/dev/disk/by-uuid/eeb8ea7f-7507-4b4c-9a4d-b75a871b7aba / ext4 rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=1184300k 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0
cgroup /dev/cgroup/cpu cgroup rw,relatime,cpu,release_agent=/usr/local/sbin/cgroup_clean 0 0
/dev/sda4 /media/2E652F573B232F6D fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0
zero@hhs-dev9 ~ $ cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda3
UUID=eeb8ea7f-7507-4b4c-9a4d-b75a871b7aba / ext4 rw,errors=remount-ro 0 1
并且该分区在 /proc/mounts 和 /etc/mtab 中清楚地找到了正确的 UUID，我很茫然，我无论如何也想不出它为什么突然停止工作，为什么我不能卸载并重新挂载它