在网上搜了会如何挂载U盘，实践了下，做个记录.
1. 在插上U盘后，sudo到root用户，查看/etc/fstab 文件
cat /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 /host/ubuntu/disks/root.disk / ext4 loop,errors=remount-ro,user_xattr 0 1 /host/ubuntu/disks/swap.disk none swap loop,sw 0 0
给做个备份(fstab做修改就会存在fstab.bak)
查看下挂载磁盘情况：blkid 如下：
blkid /dev/loop0: UUID="b8801a96-dd42-46de-9a7a-2ccf1ea2e455" TYPE="ext4" /dev/sda1: UUID="D258E8DC58E8BFF9" TYPE="ntfs" /dev/sda5: LABEL="work" UUID="80A2A38513BFE8E3" TYPE="ntfs" /dev/sda6: LABEL="movie" UUID="06D0FEE27ED01CC8" TYPE="ntfs" /dev/sda7: LABEL="ubuntu" UUID="1826DA7E26DA5C76" TYPE="ntfs" /dev/sda8: LABEL="software" UUID="DFD5CDD5E8D6B4B3" TYPE="ntfs" /dev/sdb1: LABEL="PENDRIVE" UUID="66E7-9DF1" TYPE="vfat"
/dev/sdb1为所要挂载的U盘
2. 修改/etc/fstab文件
# /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 /host/ubuntu/disks/root.disk / ext4 loop,errors=remount-ro,user_xattr 0 1 /host/ubuntu/disks/swap.disk none swap loop,sw 0 0 /dev/sdb1 /media/udisk vfat rw,nosuid,nodev,sync,noatime,quiet,shortname=mixed,uid=1000,gid=1000,umask=077,iocharset=utf8 0 0
/media/udisk为所要挂载的磁盘位置，创建该目录
sudo mkdir -p /media/udisk
3. 挂载U盘
mount/umount $disk_parti
sudo mount /dev/sdb1
sudo umount /dev/sdb1
4. 正常访问U盘
P.S.
挂载其他磁盘的操作也同上！
参考文档：