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今天，决定格掉windows不再用了在我的电脑上！其实我早就想把他格式化了！啊哈
[root@localhost disk-1]# umount /dev/sda
sda sda1 sda2 sda5 sda6 sda7 sda8 sda9
[root@localhost disk-1]# umount /dev/sda1
umount: /media/disk-1: device is busy
umount: /media/disk-1: device is busy
[root@localhost disk-1]# cd
[root@localhost ~]# umount /dev/sda1
[root@localhost ~]# mkfs.ext3 /dev/sda1
mke2fs 1.40.2 (12-Jul-2007)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
1921984 inodes, 3840472 blocks
192023 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=3934257152
118 block groups
32768 blocks per group, 32768 fragments per group
16288 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 38 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@localhost ~]#
tune2fs是linux下面重要的文件系统调整工具，其中的几个选项解释如下：
-c：表示文件系统在mount次数达到设定后，需要运行fsck检查文件系统。
-i：文件系统的检查间隔时间。系统在达到时间间隔时，自动检查文件系统。
-l：显示文件系统的很多参数。
-j：转换为ext3文件系统。
通常如果使用ext3文件系统的话，使用-c 0关掉mount次数达到后的文件系统检查。但是，此时最好使用 -i 启动检查时间 间隔，否则文件系统出问题的时候就很难补救了。我的设置是-c 1w，每周自动检查一次。
[root@localhost ~]# tune2fs -i
tune2fs 1.40.2 (12-Jul-2007)
tune2fs：选项需要一个参数 -- i
Usage: tune2fs [-c max_mounts_count] [-e errors_behavior] [-g group]
[-i interval[d|m|w]] [-j] [-J journal_options]
[-l] [-s sparse_flag] [-m reserved_blocks_percent]
[-o [^]mount_options[,...]] [-r reserved_blocks_count]
[-u user] [-C mount_count] [-L volume_label] [-M last_mounted_dir]
[-O [^]feature[,...]] [-T last_check_time] [-U UUID] device
为什么还有呢
[root@localhost disk-1]# du
16 ./lost+found
20 .
[root@localhost disk-1]# df
文件系统 1K-块 已用 可用 已用% 挂载点
/dev/sda7 18922876 16358416 1587712 92% /
tmpfs 252944 200 252744 1% /dev/shm
/dev/sda6 19517424 18092112 1425312 93% /media/disk
/dev/sda5 20480008 15975840 4504168 79% /media/软件
/dev/sda9 40678556 13226784 25385416 35% /media/disk-2
/dev/sda1 15120616 168712 14183812 2% /media/disk-1
[root@localhost disk-1]#
lost+found is keeping the dump files
when linux not safe reboot the ram information will keep in it
[root@localhost ~]# umonut /media/
_/ disk-1/ .hal-mtab-lock
disk/ .hal-mtab 软件/
[root@localhost ~]# umonut /media/_/
-bash: umonut: command not found
[root@localhost ~]# umount /media/_/
[root@localhost ~]# mkfs.ext3 /dev/sda8
mke2fs 1.40.2 (12-Jul-2007)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
2443200 inodes, 4883752 blocks
244187 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
150 block groups
32768 blocks per group, 32768 fragments per group
16288 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 33 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
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