Ubuntu 10.04掛載硬盤時好像已經不再輸入密碼了，這樣安全性不夠高哦，如果想要在Ubuntu掛載硬盤需要輸入密碼的話。怎麼辦呢？
打開終端：
sudo gedit /var/lib/polkit-1/localauthority/10-vendor.d/com.ubuntu.desktop.pkla
裡面會有
[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。變成
#[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
這樣就可以在掛載時輸入密碼啦！
