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New exFat file system under XPSP3 & Win7

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!poston!: 7-1-2010 01:43 AM
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From Wiki ....

exFAT (Extended File Allocation Table, aka FAT64) is a proprietary, patent-pending[2] file system suited especially for USB flash drives,[citation needed] introduced by Microsoft for embedded devices in Windows Embedded CE 6.0, in their desktop operating systems Windows Vista Service Pack 1[3] and Windows 7, and in their server operating system Windows Server 2008[4].
exFAT can be used where the NTFSfile system is not a feasible solution, due to data structure overhead,or where the file size or directory restrictions of previous versionsof the FAT file system are unacceptable.
Windows XP and Windows Server 2003 (both x86 and x64) users can add support for exFAT by installing an update from Microsoft.[1] An experimental, open source Linux kernel module that supports the reading of exFAT files is currently under development [5].A closed source, read/write Linux driver, licensed and derived from theMicrosoft exFAT driver, is available for purchase from Tuxera[6].

AdvantagesThe advantages over previous File Allocation Table (FAT) file system versions include:
  • Scalability to large disk sizes: 64 ZiB theoretical max, 512 TiB recommended max, raised from the 2 TiB limit of FAT32 partitions. Note that the built-in Windows XP format utility limits new FAT32 partitions to 32 GiB.[1]
  • Sector size between 29 (512) and 212 (4,096) bytes
  • Cluster size up to 32 MiB[1]
  • File size limit of 64 ZiB (512 TiB recommended max), raised from close to 4 GiB in FAT32[1]
  • Free space allocation and delete performance improved due to introduction of a free space bitmap
  • Support for up to 2,796,202 files per directory,[2] increased from 65,536
  • Support for access control lists (not supported yet in Windows Vista SP1)[7]
  • Support for TFAT, a transactional file system standard (optionally WinCE activated function)
  • Provision for OEM-definable parameters to customize the file system for specific device characteristics
  • Support for UTC timestamps (starting with Vista SP2)[8]
  • Timestamp granularity of 10 ms (better than previous FAT versions' 2 s, but worse than NTFS's 100 ns)[2]
[edit] DisadvantagesThe disadvantages compared to previous FAT versions include:
  • Windows XP and Windows Server 2003 users must have Service Pack 2 or later and install an update to support exFAT
  • Windows Vista must be Service Pack 1 or later for exFAT support
  • Devices formatted using exFAT cannot be read by any version of Windows prior to Windows XP or by any version of DOS or OS/2.
  • Devices using exFAT are unable to use Windows Vista's ReadyBoost capability (Windows 7 adds support for ReadyBoost on exFAT formatted drives and enables a larger ReadyBoost cache due to the removal of the 4GB file size limit of FAT32)[9]
  • Microsoft has not released the official exFAT file specification,and a license from Microsoft is required in order to make anddistribute exFAT implementations[10]
  • Limited or no support outside PC environment at present — mostcurrent consumer electronics, such as televisions and A/V receivers,can only handle previous FAT versions (this may change with the new SDXC cards and Memory Stick XC requiring exFAT)
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!poston!: 7-1-2010 08:35 AM
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thanks for contributing ....very Tech Savvy ya !!
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