What is a Windows 7 System Reserved Partition?

If you installed Windows 7 Operating system on a new hard disk you might have observed that Windows 7 creates a 100MB system reserved partition. You may have wondered why this partition is created. Well, let’s know more about it:

What is a Windows 7 System Reserved Partition?

A Windows 7 System Reserved Partition is a partition that is created while installing Windows 7 on a new hard disk or a formatted hard disk. Usually, it’s a 100MB NTFS partition. If you have a look at it in Disk Management, you’ll notice that it has no Drive letter.

The system reserved 100MB partition is only available for Windows 7 Ultimate, Windows 7 Business and Windows 7 Enterprise editions. It is used primarily as BitLocker partition for BitLocker encryption. In addition to this it also holds the Windows Recovery Environment (WinRE) and boot files with boot manager. This is used to boot the computer whenever it has boot problems and there is no Windows 7 installation DVD disc with you.

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Discussion

7 comments for “What is a Windows 7 System Reserved Partition?”

  • rover3500

    Just wanted to let u know i have windows 7 premium,and that also creates a system 100mb partition when i install my os.

  • http://www.bizzntech.com Joel

    Hmm… I guess I need to add that to the list then.

    On my laptop there’s Home premium, I’ll check on that.

  • Gary

    What does it have to do with Bitlocker? You need a much larger partition than 100 MB for Bitlocker. You need 1.5 GB for that. I think it is just for recovery duties.

  • Alex

    its only for recovery its got nothing to do with bitlocker if you turn off system restore and backup use ccleaner or tuneuputilitys and remove it

  • EEEEE

    I got it with windows 7 Home premium, maybe factory addon… (sony Vaio E series)

  • RedLongbrake

    Mine has a drive letter. :/

  • steve

    windows 7 professional uses bitlocker and has a much larger system reserved partition (2gb). bitlocker is not available in home editions hence why only 100mb

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