[English version is followed after Japanese version]
[Japanese version]
Mac鐃叔わ申Virtual Box鐃塾ホワ申鐃夙ワ申鐃緒申鐃緒申[鐃緒申Command鐃緒申鐃緒申]鐃叔わ申鐃暑。Virtual Box鐃塾ホワ申鐃夙ワ申鐃緒申鐃熟￥申
鐃緒申鐃循マワ申鐃緒申鐃緒申鐃庶し鐃銃わ申鐃緒申櫃法鐃緒申曠鐃緒申鐃�OS鐃緒申鐃緒申遒�鐃叔わ申鐃暑キ鐃緒申鐃叔わ申鐃暑。鐃緒申鐃純：鐃春ルス鐃緒申鐃所ー鐃緒申妊鐃緒申鐃緒申鐃�OS鐃緒申鐃緒申鐃術わ申鐃銃わ申鐃緒申箸鐃緒申縫曠鐃緒申鐃�OS鐃緒申鐃緒申鐃緒申函鐃�
Mac鐃叔わ申Virtual Box鐃塾緒申鐃緒申曠鐃緒申肇鐃緒申鐃緒申鐃�[鐃緒申Command鐃緒申鐃緒申]鐃叔わ申鐃暑。[鐃緒申Command鐃緒申鐃緒申]鐃熟￥申Mac鐃緒申鐃緒申鐃祝わ申鐃緒申鐃術わ申鐃暑キ鐃緒申鐃塾ひとつでわ申鐃暑。鐃緒申鐃緒申鐃緒申鐃獣て￥申鐃緒申鐃緒申鐃緒申OS鐃緒申鐃緒申鐃緒申鐃祝意図わ申鐃淑わ申鐃緒申鐃薯するこ鐃夙わ申鐃緒申鐃緒申鐃暑。鐃緒申鐃緒申鐃緒申匹鐃緒申鐃緒申鐃緒申Virtual Box鐃塾ホワ申鐃夙ワ申鐃緒申鐃緒申鐃術刻申鐃緒申鐃緒申鐃緒申法鐃緒申鐃緒申鐃緒申鐃緒申鐃暑。
鐃殉わ申鐃術刻申鐃遵、[鐃緒申Command鐃緒申鐃緒申]鐃熟ワ申鐃緒申鐃緒申OS鐃緒申Windows鐃薯インスト￥申鐃暑し鐃緒申鐃楯に￥申Windows鐃緒申鐃緒申鐃竣とわ申鐃銃居申能鐃緒申鐃暑た鐃緒申鐃緒申鐃緒申鐃叔わ申鐃暑。

1. VirtualBox鐃塾ワ申縫紂種申鐃緒申鐃�[VirtualBox]鐃緒申[鐃縦駈申鐃緒申鐃緒申]鐃薯クワ申奪鐃緒申鐃緒申襦�
2. 鐃緒申鐃瞬ワ申縫紂種申鐃�[鐃緒申鐃緒申]鐃薯クワ申奪鐃緒申鐃緒申襦�
3. 鐃緒申鐃循マワ申鐃緒申離曠鐃緒申肇鐃緒申鐃緒申鐃緒申儿鐃緒申鐃緒申襦ｏ申鐃�VirtualBox - 鐃緒申鐃熟）をアワ申鐃銃ワ申鐃瞬にわ申鐃緒申[鐃緒申Command鐃緒申鐃緒申]鐃薯押わ申鐃緒申

[English version]
The host key of virtual box on Mac provides host os operation to you when you use guest os. Example of which is that you can go back to host os when you use guest os.
In initial settings, the host key is [left-command-key]. [left-command-key] is the one of most frequent use key when you operate mac os, therefore when you operate guest os, misuse of the key is increased. To prevent this, I will explain how to change the host key, in addition you can use [left-command-key] as [windows-key] using windows os as guest os.

1. Click [VirtualBox]->[Preference] in menu box
2. Click [Input]
3. Change Virtual Machine host key. Activate [Host Key Combination] and then put [right-command-key]