详解linux添加硬盘分区挂载教程

  [root@oracle ~]# fdisk -l    Disk /dev/sdb: 21.5 GB, 21474836480 bytes    255 heads, 63 sectors/track, 2610 cylinders    Units = cylinders of 16065 * 512 = 8225280 bytes    Sector size (logical/physical): 512 bytes / 512 bytes    I/O size (minimum/optimal): 512 bytes / 512 bytes    Disk identifier: 0x00000000    Disk /dev/sda: 21.5 GB, 21474836480 bytes    255 heads, 63 sectors/track, 2610 cylinders    Units = cylinders of 16065 * 512 = 8225280 bytes    Sector size (logical/physical): 512 bytes / 512 bytes    I/O size (minimum/optimal): 512 bytes / 512 bytes    Disk identifier: 0x0006b59c    Device Boot   Start     End   Blocks  Id System    /dev/sda1  *      1     39   307200  83 Linux    Partition 1 does not end on cylinder boundary.    /dev/sda2       39    2358  18631680  83 Linux    /dev/sda3      2358    2611   2031616  82 Linux swap / Solaris   

  [root@oracle ~]# fdisk /dev/sdb     Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel    Building a new DOS disklabel with disk identifier 0x09f38795.    Changes will remain in memory only, until you decide to write them.    After that, of course, the previous content won't be recoverable.         Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)         WARNING: DOS-compatible mode is deprecated. It's strongly recommended to         switch off the mode (command 'c') and change display units to         sectors (command 'u').         Command (m for help): m    Command action      a  toggle a bootable flag      b  edit bsd disklabel      c  toggle the dos compatibility flag      d  delete a partition      l  list known partition types      m  print this menu      n  add a new partition      o  create a new empty DOS partition table      p  print the partition table      q  quit without saving changes      s  create a new empty Sun disklabel      t  change a partition's system id      u  change display/entry units      v  verify the partition table      w  write table to disk and exit      x  extra functionality (experts only) 

  Command (m for help): n    Command action      e  extended                                  ・・・扩展分区      p  primary partition (1-4)                          ・・・主分区    p    Partition number (1-4): 1    First cylinder (1-2610, default 1):     Using default value 1    Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610):     Using default value 2610   

  Command (m for help): p         Disk /dev/sdb: 21.5 GB, 21474836480 bytes    255 heads, 63 sectors/track, 2610 cylinders    Units = cylinders of 16065 * 512 = 8225280 bytes    Sector size (logical/physical): 512 bytes / 512 bytes    I/O size (minimum/optimal): 512 bytes / 512 bytes    Disk identifier: 0x09f38795           Device Boot   Start     End   Blocks  Id System    /dev/sdb1        1    2610  20964793+ 83 Linux         Command (m for help): w    The partition table has been altered!         Calling ioctl() to re-read partition table.    Syncing disks. 

  [root@oracle ~]# mkfs.ext4 /dev/sdb    mkfs.ext4: invalid fragment size - /dev/sdb   

  [root@oracle ~]# mount /dev/sdb /oracle/    You have new mail in /var/spool/mail/root    [root@oracle ~]# df -TH    Filesystem   Type  Size Used Avail Use% Mounted on    /dev/sda2   ext4  19G  11G 7.3G 60% /    tmpfs     tmpfs 2.1G  74k 2.1G  1% /dev/shm    /dev/sda1   ext4  297M  29M 253M 11% /boot    /dev/sdb    ext4  22G  47M  20G  1% /oracle   

  /dev/sdb    /oracle     ext4  defaults,noatime    0 0