如果你在Linux系統中格式化磁盤時遇到如下錯誤，那么表示你正在格式化一個擴展分區。

[root@GETTestLNX06 ~]# mkfs.ext4 /dev/sdb1 ? mke2fs 1.41.12 (17-May-2010) ? mkfs.ext4: inode_size (128) * inodes_count (0) too big for a ? filesystem with 0 blocks, specify higher inode_ratio (-i) ? or lower inode count (-N). ?

直接格式化擴展分區是不允許的，只能格式化主分區和邏輯分區。那么那么應該如何格式化一個擴展分區呢，我們要么刪除該擴展分區，創建一個主分區；要么在擴展分區上創建邏輯分區，如下操作所示

1： 創建邏輯分區

[root@GETTestLNX06 ~]# fdisk /dev/sdb ? 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): p ? Disk /dev/sdb: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 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: 0xd61351c9 ? ?? Device Boot????? Start???????? End????? Blocks?? Id? System /dev/sdb1?????????????? 1?????? 13054?? 104856223+?? 5? Extended ? Command (m for help): n Command action ?? l?? logical (5 or over) ?? p?? primary partition (1-4) l First cylinder (1-13054, default 1): 1 Last cylinder, +cylinders or +size{K,M,G} (1-13054, default 13054): Using default value 13054 ? Command (m for help): p ? Disk /dev/sdb: 107.4 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 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: 0xd61351c9 ? ?? Device Boot????? Start???????? End????? Blocks?? Id? System /dev/sdb1?????????????? 1?????? 13054?? 104856223+?? 5? Extended /dev/sdb5?????????????? 1?????? 13054?? 104856192?? 83? Linux ? Command (m for help): w The partition table has been altered! ? Calling ioctl() to re-read partition table. Syncing disks.

2：格式化邏輯分區

[root@GETTestLNX06 ~]# mkfs.ext4 /dev/sdb5 mke2fs 1.41.12 (17-May-2010) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 6553600 inodes, 26214048 blocks 1310702 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4294967296 800 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: ??????? 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, ??????? 4096000, 7962624, 11239424, 20480000, 23887872 ? Writing inode tables: done??????????????????????????? Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done ? This filesystem will be automatically checked every 28 mounts or 180 days, whichever comes first.? Use tune2fs -c or -i to override.

3：將掛載信息寫入配置文件

編輯[root@GETTestLNX06 ~]# vi /etc/fstab

4：掛載新建的分區

[root@GETTestLNX06 ~]# cd / [root@GETTestLNX06 /]# mkdir u01 [root@GETTestLNX06 /]# mount -a [root@GETTestLNX06 /]# df -h Filesystem??????????? Size? Used Avail Use% Mounted on /dev/mapper/vg_gettestlnx06-lv_root ?????????????????????? 44G? 2.3G?? 40G?? 6% / tmpfs???????????????? 3.9G???? 0? 3.9G?? 0% /dev/shm /dev/sda1???????????? 477M?? 33M? 419M?? 8% /boot /dev/sdb5????????????? 99G?? 60M?? 94G?? 1% /u01 [root@GETTestLNX06 /]#

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from:http://www.cnblogs.com/kerrycode/p/4423753.html

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