安裝Microsoft Windows OS 硬碟限制

目前HDD 有2TB的限制主要來自於硬碟分割技術(MBA and GPT)，如使用舊有MBA方式分割硬體就會有些限制，如你使用HDD 已大於2TB 請使用GPT方式來分割

使用情況有二種如果需要Primary Partition 大於2TB並作為開機使用請檢查是否已滿足下列必要條件 :

1.使用 UEFI  

2.作業系統支援GPT 分割區

以目前產品來說XP Professional 、XPE、POSReady 2009確定Boot partition 無法大於2TB size.

如果無法滿足上述條件，可將開機Partition 大小限制於2TB之下. 再進行HDD 安裝.

你提供的硬碟速度變慢情況，請確認你硬碟是否有作4K alignment.

	版本	GPT	UEFI/GPT Boot
XP Professional	32	X	X
XP Professional	64	○	X
XPE/WES2009	32	X	X
POSReady 2009	32	X	X
Windows 7	32	○	X
Windows 7	64	○	○
POSReady 7	32	○	X
POSReady 7	64	○	○

How to using UEFI to install windows: http://chrislee.pro/2010/12/25/uefi-%E5%AE%89%E8%A3%9D-windows-os/

Microsoft Official UEFI/GPT of information: http://technet.microsoft.com/zh-tw/library/hh825686.aspx

Microsoft產品支援的硬碟大小由於使用的File system不同下會有不同:

NTFS vs FAT vs exFAT

DATA SOURCE FROM:http://www.ntfs.com/ntfs_vs_fat.htm

Criteria	NTFS5	NTFS	exFAT	FAT32	FAT16	FAT12
Operating System	Windows 2000 Windows XP Windows 2003 Server Windows 2008 Windows Vista Windows 7	Windows NT Windows 2000 Windows XP Windows 2003 Server Windows 2008Windows Vista Windows 7	Windows CE 6.0 Windows Vista SP1 Windows 7 WinXP+KB955704	DOS v7 and higher Windows 98 Windows ME Windows 2000 Windows XP Windows 2003 Server Windows Vista Windows 7	DOS All versions of Microsoft Windows	DOS All versions of Microsoft Windows
Limitations
Max Volume Size	264 clusters minus 1 cluster	232 clusters minus 1 cluster	128PB	32GB for all OS. 2TB for some OS	2GB for all OS. 4GB for some OS	16MB
Max Files on Volume	4,294,967,295 (232-1)	4,294,967,295 (232-1)	Nearly Unlimited	4194304	65536
Max File Size	264 bytes (16 ExaBytes) minus 1KB	244 bytes (16 TeraBytes) minus 64KB	16EB	4GB minus 2 Bytes	2GB (Limit Only by Volume Size)	16MB (Limit Only by Volume Size)
Max Clusters Number	264 clusters minus 1 cluster	232 clusters minus 1 cluster	4294967295	4177918	65520	4080
Max File Name Length	Up to 255	Up to 255	Up to 255	Up to 255	Standard - 8.3 Extended - up to 255	Up to 254
File System Features
Unicode File Names	Unicode Character Set	Unicode Character Set	Unicode Character Set	System Character Set	System Character Set	System Character Set
System Records Mirror	MFT Mirror File	MFT Mirror File	No	Second Copy of FAT	Second Copy of FAT	Second Copy of FAT
Boot Sector Location	First and Last Sectors	First and Last Sectors	Sectors 0 to 11 Copy in 12 to 23	First Sector and Copy in Sector #6	First Sector	First Sector
File Attributes	Standard and Custom	Standard and Custom	Standard Set	Standard Set	Standard Set	Standard Set
Alternate Streams	Yes	Yes	No	No	No	No
Compression	Yes	Yes	No	No	No	No
Encryption	Yes	No	No	No	No	No
Object Permissions	Yes	Yes	Yes	No	No	No
Disk Quotas	Yes	No	No	No	No	No
Sparse Files	Yes	No	No	No	No	No
Reparse Points	Yes	No	No	No	No	No
Volume Mount Points	Yes	No	No	No	No	No
Overall Performance
Built-In Security	Yes	Yes	Yes minimal ACL only	No	No	No
Recoverability	Yes	Yes	Yes if TFAT activated	No	No	No
Performance	Low on small volumes High on Large	Low on small volumes High on Large	High	High on small volumes Low on large	Highest on small volumes Low on large	High
Disk Space Economy	Max	Max	Max	Average	Minimal on large volumes	Max
Fault Tolerance	Max	Max	Yes if TFAT activated	Minimal	Average	Average