Linux中df命令查询磁盘信息和fdisk命令分区的用法

[root@localhost ~]# df #列出各文件系统的磁盘空间使用情况[root@localhost ~]# df -ia #列出各文件系统的i节点使用情况[root@localhost ~]# df -T #列出文件系统的类型[root@localhost ~]# df -h #目前磁盘空间和使用情况 以更易读的方式显示[root@localhost ~]# df -k #以单位显示磁盘的使用情况

[root@localhost ~]# fdisk -l </p>
<p>Disk /dev/sda: 500.1 GB, 500107862016 bytes255 heads, 63 sectors/track, 60801 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes</p>
<p> Device Boot Start End Blocks Id System/dev/sda1 * 1 17 136552 83 Linux/dev/sda2 18 279 2104515 82 Linux swap / Solaris/dev/sda3 280 60801 486142965 5 Extended/dev/sda5 280 60801 486142964+ 83 Linux

[root@localhost ~]# fdisk /dev/hdc #分区时，不要加上数字The number of cylinders for this disk is set to 5005.There is nothing wrong with that, but this is larger than 1024,and could in certain setups cause problems with:1) software that runs at boot time (e.g., old versions of LILO)2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK)Command (m for help): m #可以查看帮助Command action a toggle a bootable flag b edit bsd disklabel c toggle the dos compatibility flag d delete a partition #删除分区 l list known partition types #列举已知分区 m print this menu n add a new partition #增加分区 o create a new empty DOS partition table p print the partition table #显示分区表 q quit without saving changes #不保存退出分区 s create a new empty Sun disklabel t change a partition\’s system id #改变分区ID u change display/entry units v verify the partition table w write table to disk and exit #保存分区操作 x extra functionality (experts only) Command (m for help): p Disk /dev/hdc: 41.1 GB, 41174138880 bytes #磁盘名称和大小255 heads, 63 sectors/track, 5005 cylinders #磁头、磁区与磁柱数量，多少Units = cylinders of 16065 * 512 = 8225280 bytes #每个磁柱的大小 Device Boot Start End Blocks Id System/dev/hdc1 * 1 13 104391 83 Linux/dev/hdc2 14 1288 10241437+ 83 Linux/dev/hdc3 1289 1925 5116702+ 83 Linux/dev/hdc4 1926 5005 24740100 5 Extended/dev/hdc5 1926 2052 1020096 82 Linux swap / SolarisCommand (m for help): q # q是不保存退出，w不要随便输入

[root@server7 ~]# fdisk -cl /dev/vdbDisk /dev/vdb: 8589 MB, 8589934592 bytes16 heads, 63 sectors/track, 16644 cylindersUnits = cylinders of 1008 * 512 = 516096 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0xce720981 Device Boot Start End Blocks Id System/dev/vdb1 3 206 102400 83 Linux/dev/vdb2 206 409 102400 83 Linux/dev/vdb3 409 612 102400 83 Linux[root@server7 ~]# fdisk -ul /dev/vdbDisk /dev/vdb: 8589 MB, 8589934592 bytes16 heads, 63 sectors/track, 16644 cylinders, total 16777216 sectorsUnits = sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0xce720981 Device Boot Start End Blocks Id System/dev/vdb1 2048 206847 102400 83 LinuxPartition 1 does not end on cylinder boundary./dev/vdb2 206848 411647 102400 83 LinuxPartition 2 does not end on cylinder boundary./dev/vdb3 411648 616447 102400 83 LinuxPartition 3 does not end on cylinder boundary.