Mount and dismount hard drive through a script on Windows 7

Reference:
Mount and dismount hard drive through a script

find volume name command: mountvol

umount script:
@echo off
REM Be sure to change this to the drive you want to unmount!
set drive=G:
echo Unmounting Drive...
mountvol %drive% /p
echo Drive Unmounted!
pause
exit

mount script:
@echo off
REM Be sure to change this to the drive letter you want to mount the drive to!
set drive=G
REM Be sure to change this to the Volume Name of the drive you want to mount!
set volume=\\?\Volume{ae101d9f-7653-11e3-be83-8056f23387a6}\
:start
echo Mounting Drive...
mountvol %drive%: %volume%
echo Drive Mounted!
pause
exit

在 Windows 7 執行這兩個 script 需要 Run as Administrator。
如果想直接執行必須 disable UAC。

allow remote desktop to change display setting

Reference:
Remote Desktop Issues for Windows Server R2

hotfix 2726399

Remote Desktop Client slow, hanging at “Securing remote connection…”

狀況：
部分無法對外連線的電腦使用遠端桌面會在連線時卡很久。

解法1：
修改 Firewall，將 Deny 改為 Reject。

解法2：
修改 group policy，改為不更新 root CA。

VirtualBox 4.3 VM auto start on CentOS host

需求：CentOS 開機時將 VM 自動開機

做法：
vi /etc/rc3.d/S99local
/usr/bin/vboxmanage startvm "VM name" --type headless

Reference:
VBoxHeadless, the remote desktop server

用這種 VM 開機方式在 VM VirtualBox Manager 上只能 preview，沒辦法進去 VM 操作。
必須另外安裝 VirtualBox Extension Pack 才能用 RDP 進入操作。

VirtualBox Extension Pack 安裝指令：
vboxmanage extpack install <.vbox-extpack>

在 VM 的 Remote Display 設定 server port，Ex: 5000。

用 RDP client 連線，這時要連 CentOS host IP + server port。
Ex: mstsc.exe CentOS_host_IP:5000

CentOS 5.9 安裝 VirtualBox 4.3

錯誤訊息：(more /var/log/vbox-install.log)
Makefile:183: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again.  Stop.

解法：
1. yum install -y gcc kernel-devel
2. export KERN_DIR=/usr/src/kernels/2.6.18-404.el5-x86_64
3. /etc/init.d/vboxdrv setup

Reference:
CentOS 6.2: VirtualBox Guest Additions -> Error: unable to find the sources ...
[Ubuntu] 解決 linux 核心升級後 VirtualBox 無法執行編譯問題