1. 第一種方式使用mount命令

先將u盤掛載

mount /dev/sda1 /mnt

然後使用mount命令，輸出如下：

rootfs on / type rootfs (rw)
/dev/root on /rom type squashfs (ro,relatime)
proc on /proc type proc (rw,noatime)
sysfs on /sys type sysfs (rw,noatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,noatime)
tmpfs on /dev type tmpfs (rw,noatime,size=512k,mode=755)
devpts on /dev/pts type devpts (rw,noatime,mode=600)
/dev/mtdblock3 on /overlay type jffs2 (rw,noatime)
overlayfs:/overlay on / type overlayfs (rw,relatime,lowerdir=/,upperdir=/overlay)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
none on /proc/bus/usb type usbfs (rw,relatime)
/dev/sda1 on /mnt type ext3 (rw,relatime,user_xattr,barrier=1,nodelalloc,data=ordered)
 

2. 第二種方式是使用blkid命令

/dev/mtdblock2: TYPE="squashfs" 
/dev/sda1: UUID="0785a288-43f4-4a8a-a02e-ca411e3a4a18" TYPE="ext3"