linux下如何格式化U盘
linux下如何格式化U盘
2009-07-26 15:14
[root@localhost /]# df
文件系统 1K-块 已用 可用 已用% 挂载点 /dev/sda7 30233896 7191424 21506660 26% / /dev/sda9 61076224 8340772 49632904 15% /home /dev/sda6 1004024 24996 928024 3% /boot tmpfs 512672 76 512596 1% /dev/shm /dev/sda5 40955680 5243424 35712256 13% /media/_wind /dev/sda1 20472816 9167072 11305744 45% /media/WINXP /dev/sdb 255732 245204 10528 96% /media/disk [root@localhost /]# mkfs.ext2 /dev/sdb mke2fs 1.41.3 (12-Oct-2008) /dev/sdb is entire device, not just one partition! Proceed anyway? (y,n) y /dev/sdb is mounted; will not make a filesystem here! [root@localhost /]# umount /media/disk [root@localhost /]# df 文件系统 1K-块 已用 可用 已用% 挂载点 /dev/sda7 30233896 7191424 21506660 26% / /dev/sda9 61076224 8340788 49632888 15% /home /dev/sda6 1004024 24996 928024 3% /boot tmpfs 512672 76 512596 1% /dev/shm /dev/sda5 40955680 5243424 35712256 13% /media/_wind /dev/sda1 20472816 9167072 11305744 45% /media/WINXP [root@localhost /]# mkfs.ext2 /dev/sdb mke2fs 1.41.3 (12-Oct-2008) /dev/sdb is entire device, not just one partition! Proceed anyway? (y,n) y Filesystem label= OS type: Linux Block size=1024 (log=0) Fragment size=1024 (log=0) 64000 inodes, 256000 blocks 12800 blocks (5.00%) reserved for the super user First data block=1 Maximum filesystem blocks=67371008 32 block groups 8192 blocks per group, 8192 fragments per group 2000 inodes per group Superblock backups stored on blocks: 8193, 24577, 40961, 57345, 73729, 204801, 221185 Writing inode tables: done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 27 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override. [root@localhost /]# dfdisk -l -bash: dfdisk: command not found [root@localhost /]# fdisk -l Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x041f041e Device Boot Start End Blocks Id System /dev/sda1 * 1 2550 20482843+ c W95 FAT32 (LBA) /dev/sda2 2551 19457 135805477+ f W95 Ext'd (LBA) /dev/sda5 2551 7650 40965718+ b W95 FAT32 /dev/sda6 7651 7777 1020096 83 Linux /dev/sda7 7778 11601 30716248+ 83 Linux /dev/sda8 11602 11732 1052226 82 Linux swap / Solaris /dev/sda9 11733 19457 62051031 83 Linux Disk /dev/sdb: 262 MB, 262144000 bytes 9 heads, 56 sectors/track, 1015 cylinders Units = cylinders of 504 * 512 = 258048 bytes Disk identifier: 0x00000000 Disk /dev/sdb doesn't contain a valid partition table [root@localhost /]# 插入U盘后,先用df查看设备号,再执行umount进行卸载,然后执行格式化命令mkfs.ext2 /dev/sdb。执行umount操作后,虽然用df -l看不到U盘的相关信息,但用fdisk -l是可以看到的 |
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