2. Microsoft Operating Systems Richard Goldman © February 28, 2001

3. 16-bit32-bit64-bit DOS 1.0 DOS 8.0 Major Microsoft Desktop & Server Operating Systems Win 3.11 Win 3.1 Win 95 Win 98 Win Me NT 4.0 Server NT 4.0 Workstation Win2000 Server Adv Server Datacenter Win2000 Professional Win XP 64-bit Professional Win XP Professional Win XP Home Win2003 Web Server Standard Ser Enterprise Ser Datacenter Win2003 64-bit Enterprise Ser Longhorn & Blackcomb 2005 ?

4. Primary System Configuration Locations DOSWin 3XWin 9X / NT CONFIG.SYS SYSTEM.INIREGISTRY

5. Microsoft Operating System Requirements ReleaseOperating SystemProcessor (min)bitMemory (min-max)Min HDDConfigurationNote 1981DOS 1.08088 / 8086 8 /16-1MBnoneConfig.sysFirst DOS 1992Win 3.1 (DOS 3.1 min) Std286/En386161MB/1.6MB6.5/8MBSystem.iniGUI 1994Win 3.11 (DOS 3.1 min) 386163MB9.5MBSystem.iniNetworking 1994DOS 6.22808616-1MBnoneConfig.sysLast DOS 1995Win 95 (DOS 7.0)386DX324MB35MBRegistry32-bit, PnP 1996Win 95B (DOS 7.1)486/333216MB125MBRegistryOSR2.5, FAT32 1996Win NT 4.0 Server486/333216MB125MBRegistryNTFS, No PnP 1996Win NT 4.0 Workstation486/333216MB125MBRegistryNTFS, No PnP 1998Win 98 (DOS 7.1)486DX/663216MB195MBRegistryMMX, AGP 1999Win 98SE (DOS 7.1)486DX/663224MB205MBRegistryUSB 2000Win 2000 Pro133MHz3232MB2GBRegistry2CPUs 2000Win 2000 Server133MHz32256MB-4GB1GBRegistry4CPUs 2000Win 2000 Adv Server133MHz32256MB-8GB1GBRegistry8CPUs 2000Win 2000 Data CenterPentium III Xeon32256MB-32GB1GBRegistry32CPUs 2000Win Me (DOS 8.0)150MHz3232MB270MBRegistryRevert 2001Win XP Home233MHz32128MB1.5GBRegistryNo Act Dir 2001Win XP Pro233MHz32128MB1.5GBRegistry2CPUs 2001Win XP 64733MHz Itanium641GB-64GB1.5GBRegistry2CPUs 2003Win 2003 Std Server133MHz32128MB-4GB1.5GBRegistry2CPUs 2003Win 2003 Ent Server133MHz32128MB-32GB1.5GBRegistry8CPUs 2003Win 2003 Ent Server 64733MHz Itanium64128MB-64GB2GBRegistry8CPUs

6. Boot Differences ModeDOSWin 3XWin 9XNT 16 bit IO.SYS MSDOS.EXE COMMAND.COM CONFIG.SYS AUTOEXEC.BAT IO.SYS MSDOS.EXE COMMAND.COM CONFIG.SYS AUTOEXEC.BAT IO.SYS MSDOS.EXE COMMAND.COM CONFIG.SYS AUTOEXEC.BAT WIN.COM Dosx.exe Krnl286.exe WIN.COM Vmm32.vxd Static VxDs 32 bit or Win386.exe Krnl386.exe Dynamic VxDs NTLDR