磁盘的检查：　　　

　　tune2fs -l /dev/sda5　　　　(对/dev/sda5 进行检查)

　　理解下面每一行的意思：

machine@machine-virtual-machine:~$ fdisk -l /dev/sdsda   sda1  sda2  sda3  sda5  sda6  sda7  sdb   sdb1  machine@machine-virtual-machine:~$ tune2fs -l /dev/sda5tune2fs 1.42.9 (4-Feb-2014)tune2fs: 权限不够 当尝试打开 /dev/sda5 时找不到有效的文件系统超级块.machine@machine-virtual-machine:~$ sudo tune2fs -l /dev/sda5[sudo] password for machine: tune2fs 1.42.9 (4-Feb-2014)Filesystem volume name:   
     
      　　　　　　　　//卷标 （相当于Windows下的D盘的重命名的名字）Last mounted on:          /Filesystem UUID:          edd2b532-1560-4804-ab08-509ffee13b50Filesystem magic number:  0xEF53Filesystem revision #:    1 (dynamic)Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super large_fileFilesystem flags:         signed_directory_hash Default mount options:    user_xattr aclFilesystem state:         cleanErrors behavior:          ContinueFilesystem OS type:       LinuxInode count:              625856Block count:              2499840Reserved block count:     124992Free blocks:              1172007Free inodes:              429995First block:              0Block size:               4096Fragment size:            4096Reserved GDT blocks:      610Blocks per group:         32768Fragments per group:      32768Inodes per group:         8128Inode blocks per group:   508Filesystem created:       Wed May 17 20:56:03 2017Last mount time:          Sun May 21 00:12:14 2017Last write time:          Sun May 21 00:12:12 2017Mount count:              10Maximum mount count:      -1Last checked:             Wed May 17 20:56:03 2017Check interval:           0 (
      
       )Lifetime writes:          13 GBReserved blocks uid:      0 (user root)Reserved blocks gid:      0 (group root)First inode:              11Inode size:              256Required extra isize:     28Desired extra isize:      28Journal inode:            8First orphan inode:       333696Default directory hash:   half_md4Directory Hash Seed:      538aa3cd-eb59-4f51-b7b8-a253efa149b8Journal backup:           inode blocksmachine@machine-virtual-machine:~$
      
     

磁盘参数的修改：

　　//修改卷标方法

　　命令：tune2fs     （查看要修改的参数） 

　　命令：tune2fs -l /dev/sda5　　(修改之后查看修改成功没有)