VirtualBox: Effective UID is not root

桌面上運行virtualbox出錯:
The virtual machine 'xp' has terminated unexpectedly during startup with exit code 1 (0x1).
Effective UID is not root(euid=1000 egid=482 uid=1000 gid=482)(rc=-10)
Please try reinstalling VirtualBox.

手動敲命令運行/usr/lib/virtual/VirtualBox的出錯提示
VirtualBox: Error -10 in SUPR3HardenedMain!
VirtualBox: Effective UID is not root (euid=1000 egid=100 uid=1000 gid=100)
VirtualBox: Tip! It may help to reinstall VirtualBox.

從新安裝virtualbox問題依舊, 查看其mode狀態
ls -l /usr/lib/virtual/VirtualBox
-rwxr-x--- 1 root vboxusers   35368 4月  15 01:50 VirtualBox

上面這種mode是不對的，須要修改
sudo chmod 4711 /usr/lib/virtualbox/VirtualBox

再次查看
ls -l /usr/lib/virtualbox/VirtualBox
-rws--x--x 1 root vboxusers 35368 4月  15 01:50 /usr/lib/virtualbox/VirtualBox