あなたが初めて触れたOSはなんですか？

Microsoft Disk Operating SystemはMS-DOSの正式名称です。また、内部バージョンを省いていますので、OEM版などもそのバージョンの物と見なしてください。

• 複数選択可
• Microsoft Disk Operating System 1.25
• Microsoft Disk Operating System 2.0
• Microsoft Disk Operating System 3.0
• Microsoft Disk Operating System 4.0
• Microsoft Disk Operating System 5.0
• Microsoft Disk Operating System 6.0
• Microsoft Disk Operating System 6.2
• Microsoft Windows 1.0
• Microsoft Windows 2.0
• Microsoft Windows/286 2.1
• Microsoft Windows/286 2.11
• Microsoft Windows 3.0
• Microsoft Windows 3.1
• Microsoft Windows 3.11
• Microsoft Wiindows 95
• Microsoft Windows 98
• Microsoft Windows 98 Second Edition
• Microsoft Windows Millenium Edition
• Microsoft Windows 2000 Professional
• Microsoft Windows XP Home Edition
• Microsoft Windows XP Professional
• Microsoft Windows Vista
• Microsoft Windows 7
• Microsoft Windows 8
• Microsoft Windows 8.1
• Microsoft Windows NT 3.1
• Microsoft Windows NT 3.5
• Microsoft Windows NT 3.51
• Microsoft Windows NT 4.0
• Apple Computer System 1
• Apple Computer System 2
• Apple Computer System 3
• Apple Computer System 4
• Apple Computer System 6
• Apple Computer System 7.0
• Apple Computer System 7.1
• Apple Computer System 7.5
• Apple Computer System 7.6
• Apple Computer Mac OS 8.0
• Apple Computer Mac OS 8.1
• Apple Computer Mac OS 8.5
• Apple Computer Mac OS 8.6
• Apple Computer Mac OS 9
• Apple Computer Mac OS 9.1
• Apple Computer Mac OS 9.2
• Apple Computer Mac OS 9.2.1
• Apple Computer Mac OS 9.2.2
• Apple Computer OS X
• IBM PC DOS
• IBM Operating System/2