开始:
我拿到的是一个新盘,遇到的第一个问题是插上去后centos不能识别他,使用fdsik -l也没有这个U盘的任何信息,再windows上面查看他的格式也是fat32,没有问题,于是折腾了很久后我重新把他格式化,也同样格式化为fat32,这次就能识别了。
命令:fdisk -l (查看磁盘分区信息)
[root@phoenix Desktop]# fdisk -l Disk /dev/sda: 32.2 GB, 32212254720 bytes 255 heads, 63 sectors/track, 3916 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: 0x000f2962 Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 281 2048000 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 281 3917 29203456 83 Linux Disk /dev/sdb: 31.1 GB, 31104958464 bytes 255 heads, 63 sectors/track, 3781 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 Device Boot Start End Blocks Id System /dev/sdb1 1 3782 30371840 c W95 FAT32 (LBA)
通过上面通过上面信息我们可以看出USB设备是FAT32格式的,标识为/dev/sdb1
命令:mount -t vfat /dev/sdb1 /mnt/usb(挂载U盘,注意如果是ntfs格式的话可能需要安装ntfs-3g这个插件才能执行)
成功后就可以进入 /mnt/usb查看到U盘相应的内容了
命令:umount /mnt/usb(卸载U盘)
执行umount命令卸载U盘时,报如下错误“device is busy”,可以用参数l解决问题。当然你也可以用fuser命令解决问题。如下所示
[root@wgods ~]# umount /mnt/usb umount: /mnt/usb: device is busy umount: /mnt/usb: device is busy [root@wgods ~]# umount -f /mnt/usb umount2: Device or resource busy umount: /mnt/usb: device is busy umount2: Device or resource busy umount: /mnt/usb: device is busy [root@wgods ~]# umount -l /mnt/usb(成功卸载)