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[操作系统]磁盘格式化


[root@r~]# df -hFilesystem   Size Used Avail Use% Mounted on/dev/vda1    20G 5.5G  14G 30% /tmpfs      1.9G   0 1.9G  0% /dev/shm[root@r ~]# fdisk -lDisk /dev/vda: 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: 0x00078f9c  Device Boot   Start     End   Blocks  Id System/dev/vda1  *      1    2611  20970496  83 LinuxDisk /dev/vdb: 214.7 GB, 214748364800 bytes16 heads, 63 sectors/track, 416101 cylindersUnits = cylinders of 1008 * 512 = 516096 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x00000000

[root@r ~]# fdisk /dev/vdbDevice contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabelBuilding a new DOS disklabel with disk identifier 0x1aed48fa.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): 

 

Command (m for help): p #打印分区列表Disk /dev/vdb: 214.7 GB, 214748364800 bytes16 heads, 63 sectors/track, 416101 cylindersUnits = cylinders of 1008 * 512 = 516096 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x1aed48fa  Device Boot   Start     End   Blocks  Id SystemCommand (m for help): m #m查看帮助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): nCommand action  e  extended  p  primary partition (1-4)1Invalid partition number for type `1'Command action  e  extended  p  primary partition (1-4)pPartition number (1-4): 1First cylinder (1-416101, default 1): Using default value 1Last cylinder, +cylinders or +size{K,M,G} (1-416101, default 416101): Using default value 416101Command (m for help): wThe partition table has been altered!Calling ioctl() to re-read partition table.Syncing disks.

 

[root@r ~]# df -hFilesystem   Size Used Avail Use% Mounted on/dev/vda1    20G 5.5G  14G 30% /tmpfs      1.9G   0 1.9G  0% /dev/shm[root@r ~]# fdisk -lDisk /dev/vda: 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: 0x00078f9c  Device Boot   Start     End   Blocks  Id System/dev/vda1  *      1    2611  20970496  83 LinuxDisk /dev/vdb: 214.7 GB, 214748364800 bytes16 heads, 63 sectors/track, 416101 cylindersUnits = cylinders of 1008 * 512 = 516096 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x1aed48fa  Device Boot   Start     End   Blocks  Id System/dev/vdb1        1   416101  209714872+ 83 Linux

  在使用硬盘之前必须对其分区进行格式化,并挂载:

[root@r ~]# mkfs.ext3 /dev/vdb1mke2fs 1.41.12 (17-May-2010)Filesystem label=OS type: LinuxBlock size=4096 (log=2)Fragment size=4096 (log=2)Stride=0 blocks, Stripe width=0 blocks13107200 inodes, 52428718 blocks2621435 blocks (5.00%) reserved for the super userFirst data block=0Maximum filesystem blocks=42949672961600 block groups32768 blocks per group, 32768 fragments per group8192 inodes per groupSuperblock backups stored on blocks:     32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,     4096000, 7962624, 11239424, 20480000, 23887872Writing inode tables: done              Creating journal (32768 blocks): doneWriting superblocks and filesystem accounting information: doneThis filesystem will be automatically checked every 35 mounts or180 days, whichever comes first. Use tune2fs -c or -i to override.

 

[root@r ~]# df -hFilesystem   Size Used Avail Use% Mounted on/dev/vda1    20G 5.5G  14G 30% /tmpfs      1.9G   0 1.9G  0% /dev/shm[root@r ~]# mkdir /hdd1[root@r ~]# mount /dev/vdb1 /hdd1[root@r ~]# df -hFilesystem   Size Used Avail Use% Mounted on/dev/vda1    20G 5.5G  14G 30% /tmpfs      1.9G   0 1.9G  0% /dev/shm/dev/vdb1    197G 188M 187G  1% /hdd1