linux fdisk分区
测试环境
[root@bright ~]# cat /etc/centos-release && uname -r CentOS release 6.6 (Final) 2.6.32-504.el6.x86_64
分区步骤
[root@bright ~]# fdisk -l 查看当前磁盘分区 Disk /dev/sdb: 5368 MB, 5368709120 bytes 255 heads, 63 sectors/track, 652 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: 0x00024393 Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 287 2097152 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 287 2611 18668544 83 Linux [root@bright ~]# fdisk /dev/sdb #对/dev/sdb进行分区 Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0xb5c5077f. 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 #输入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): n #添加一个分区 Command action e extended p primary partition (1-4) p #创建扩展分区 Partition number (1-4): 1 #分区编号 First cylinder (1-652, default 1): #开始的柱面 Using default value 1 Last cylinder, +cylinders or +size{K,M,G} (1-652, default 652): 200 #分区大小 Command (m for help): w #写入分区表 The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@bright ~]# mkfs.ext4 /dev/sdb1 #格式化分区 mke2fs 1.41.12 (17-May-2010) 文件系统标签= 操作系统:Linux 块大小=4096 (log=2) 分块大小=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 100464 inodes, 401617 blocks 20080 blocks (5.00%) reserved for the super user 第一个数据块=0 Maximum filesystem blocks=415236096 13 block groups 32768 blocks per group, 32768 fragments per group 7728 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912 正在写入inode表: 完成 Creating journal (8192 blocks): 完成 Writing superblocks and filesystem accounting information: 完成 This filesystem will be automatically checked every 38 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
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