因现在 Linux 的 /etc/fstab 文件默认挂载文件系统时，使用的都是硬盘 UUID 方式，所以如果你擅自修改了问文件系统的参数（eg：合并多个分区），有可能会导致UUID发生变化，然后如果没有进行检查确认的话会很容易导致开机无法完成文件系统的挂载 （别问我怎么知道的） .

鉴于每次都需要去浏览器里检索一下，不如直接在这里将查看UUID 的方法记录一下。

1. by-partlabel

ls -l /dev/disk/by-partlabel/

total 0
lrwxrwxrwx 1 root root 10 May 27 23:31 EFI\x20SYSTEM\x20PARTITION -> ../../sda1
lrwxrwxrwx 1 root root 10 May 27 23:31 GNU\x2fLINUX -> ../../sda2
lrwxrwxrwx 1 root root 10 May 27 23:31 HOME -> ../../sda3
lrwxrwxrwx 1 root root 10 May 27 23:31 SWAP -> ../../sda4

2. by-partuuid

ls -l /dev/disk/by-partuuid/

total 0
lrwxrwxrwx 1 root root 10 May 27 23:31 039b6c1c-7553-4455-9537-1befbc9fbc5b -> ../../sda4
lrwxrwxrwx 1 root root 10 May 27 23:31 7280201c-fc5d-40f2-a9b2-466611d3d49e -> ../../sda3
lrwxrwxrwx 1 root root 10 May 27 23:31 98a81274-10f7-40db-872a-03df048df366 -> ../../sda2
lrwxrwxrwx 1 root root 10 May 27 23:31 d0d0d110-0a71-4ed6-936a-304969ea36af -> ../../sda1

3. by-uuid

$ ls -l /dev/disk/by-uuid/

lrwxrwxrwx 1 root root 10 May 27 23:31 0a3407de-014b-458b-b5c1-848e92a327a3 -> ../../sda2
lrwxrwxrwx 1 root root 10 May 27 23:31 b411dc99-f0a0-4c87-9e05-184977be8539 -> ../../sda3
lrwxrwxrwx 1 root root 10 May 27 23:31 CBB6-24F2 -> ../../sda1
lrwxrwxrwx 1 root root 10 May 27 23:31 f9fe0b69-a280-415d-a03a-a32752370dee -> ../../sda4