详解linux添加硬盘分区挂载教程

[root@oracle ~]# fdisk -lDisk /dev/sdb: 21.5 GB, 21474836480 bytes255 heads, 63 sectors/track, 2610 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000Disk /dev/sda: 21.5 GB, 21474836480 bytes255 heads, 63 sectors/track, 2610 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0006b59cDevice Boot   Start     End   Blocks  Id System/dev/sda1  *      1     39   307200  83 LinuxPartition 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 disklabelBuilding 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): mCommand 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): nCommand action  e  extended                                  ···扩展分区  p  primary partition (1-4)                          ···主分区pPartition number (1-4): 1First cylinder (1-2610, default 1): Using default value 1Last 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 bytes255 heads, 63 sectors/track, 2610 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x09f38795   Device Boot   Start     End   Blocks  Id System/dev/sdb1        1    2610  20964793+ 83 Linux Command (m for help): wThe partition table has been altered! Calling ioctl() to re-read partition table.Syncing disks. 

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

[root@oracle ~]# mount /dev/sdb /oracle/You have new mail in /var/spool/mail/root[root@oracle ~]# df -THFilesystem   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