Ubuntu 10.04挂载硬盘时好像已经不再输入密码了，这样安全性不够高哦，如果想要在Ubuntu挂载硬盘需要输入密码的话。怎么办呢？
打开终端：
sudo gedit /var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla
里面会有
[Mounting, checking, etc. of internal drives]
Identity=unix-group:admin
Action=org.freedesktop.udisks.filesystem-*;org.freedesktop.udisks.drive-ata-smart*
ResultActive=yes
[Change CPU Frequency scaling]
Identity=unix-group:admin
Action=org.gnome.cpufreqselector
ResultActive=yes
[Setting the clock]
Identity=unix-group:admin
Action=org.gnome.clockapplet.mechanism.*
ResultActive=yes
把最上面那段注解掉。变成
#[Mounting, checking, etc. of internal drives]
#Identity=unix-group:admin
#Action=org.freedesktop.udisks.filesystem-*;org.freedesktop.udisks.drive-ata-smart*
#ResultActive=yes
[Change CPU Frequency scaling]
Identity=unix-group:admin
Action=org.gnome.cpufreqselector
ResultActive=yes
[Setting the clock]
Identity=unix-group:admin
Action=org.gnome.clockapplet.mechanism.*
ResultActive=yes
这样就可以在挂载时输入密码啦！
