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Windows 7: what is 100 MB partition in Windows 7 meant for ?

24 Sep 2010   #1

Windows 7 x 64 Bit
what is 100 MB partition in Windows 7 meant for ?

If any one could explain - what is 100 MB Partition in Windows 7 is meant for ?


My System SpecsSystem Spec
24 Sep 2010   #2

Win7 HP (x64)/Win7 Ultimate (x64)


Have a read at this MS Support thread
My System SpecsSystem Spec
24 Sep 2010   #3

Windows 7 Pro x64

Recovery /facepalm
My System SpecsSystem Spec

24 Sep 2010   #4

Win7 HP (x64)/Win7 Ultimate (x64)

Quote   Quote: Originally Posted by Gameover View Post
Recovery /facepalm

My System SpecsSystem Spec
24 Sep 2010   #5
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

If it is your "Active" partition, then it contins the MBR and that's from where the system is booted. You better leave it alone, else your system might not boot any more.
My System SpecsSystem Spec
24 Sep 2010   #6


One reason to like it is that it conveniently places the Repair My Computer console normally only available on the DVD or Repair CD on the F8 Advanced Boot Tools menu. Thus you can repair your laptop Startup while at school.
My System SpecsSystem Spec
24 Sep 2010   #7

Windows 7 Ultimate x64 SP1

I used this tutorial to create a bootable restore partition to do the dirty work if I should ever find it necessary when I don't have my original install disks with me:

Recovery Partition - Create

Don't overlook this caveat if you desire to create the recovery partition:
It has come to my attention that Windows has an annoying habit of corrupting the Recovery Partition, especially after Disk Cleanups and Defrags. To get around this Open Disk Management (type it into the start menu) and right click your Recovery Partition, remove the letter so that windows cant see it any more. (Don't worry it will still boot, this just stops Windows from writing files to it)
My System SpecsSystem Spec
25 Sep 2010   #8

Win 7 Ultimate x64

Quote   Quote: Originally Posted by akbagaria View Post
If any one could explain - what is 100 MB Partition in Windows 7 is meant for ?

Hello akbagaria,
The 100 MB partition serves two functions -

1) It holds the Boot Manager Code and the Boot Configuration Database.

2) It also reserves space for the startup files required by BitLocker so that if you ever decide to encrypt your system drive using BitLocker, you wont have to repartition your system drive to make it possible

If you are sure you will never use Bitlocker on your system drive you can install windows without the 100 MB partition using a "disk managemaent utility" (like the command line Diskpart Utility) but for 100 MB is it really worth it ????
My System SpecsSystem Spec
26 Sep 2010   #9

Windows 7 x 64 Bit

I would like to thank everyone for enlightening me with their knowledge.

Sevenforums is amazing. Good Commendable Work is being done to spread knowledge about computer - hardware and software technology. A no expense outlet where you could have your problems solved and satiate your inquisitiveness with lots of knowledge.
Thanks everyone.
My System SpecsSystem Spec

 what is 100 MB partition in Windows 7 meant for ?

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