what is 100 MB partition in Windows 7 meant for ?

akbagaria

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

akbagaria
 

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Windows 7 x 64 BitIntel E21801 GBNone. Built in
Computer Manufacturer/Model Number
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Windows 7 x 64 Bit
CPU
Intel E2180
Motherboard
Intel D945GCPE
Memory
1 GB
Graphics Card(s)
None. Built in
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None. Built in
Monitor(s) Displays
Samsung SyncMaster 920NW
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Samsung HD503HI - 500 GB
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Chinese
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Hi

Have a read at this MS Support thread
 

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Win7 HP (x64)/Win7 Ultimate (x64)Core i7 9206 x 2GB Corsair XMS3CF HD4890
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Core i7 920
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Intel X58
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CF HD4890
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Asus Xonar
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Recovery /facepalm
 

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Windows 7 Pro x64Intel E6300 2.8GhzCorsair TWIN2X 2x2GB 5-5-5-18ATI HD5770 GDDR5 1GB
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CoolerMaster 550W eXtreme Power Plust Silent 12CM
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My Computer My Computer

At a glance

Win7 HP (x64)/Win7 Ultimate (x64)Core i7 9206 x 2GB Corsair XMS3CF HD4890
Computer Manufacturer/Model Number
Custom
OS
Win7 HP (x64)/Win7 Ultimate (x64)
CPU
Core i7 920
Motherboard
Intel X58
Memory
6 x 2GB Corsair XMS3
Graphics Card(s)
CF HD4890
Sound Card
Asus Xonar
Monitor(s) Displays
Dell 2408WFP
Screen Resolution
1920 x 1200
Hard Drives
2 x 150GB WDC Velociraptors (Raid 0)
1 x 1TB Seagate
1 x 1.5TB Seagate
PSU
Corsair HX1000W
Case
Antec 1200
Keyboard
Razer Lycosa/N52te
Mouse
Razer Lachesis
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.
 

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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.
 
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)
 

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Windows 7 Ultimate x64 SP1Core2 Duo4 GBGM965 on-board
Computer Manufacturer/Model Number
Toshiba L355D
OS
Windows 7 Ultimate x64 SP1
CPU
Core2 Duo
Motherboard
Intel
Memory
4 GB
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GM965 on-board
Sound Card
RealTek on-board
Monitor(s) Displays
19"+17"(laptop)
Screen Resolution
1440x900 (x 2)
Hard Drives
500GB Ext. 200GB Internal
PSU
N/A
Case
N/A
Cooling
N/A
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If any one could explain - what is 100 MB Partition in Windows 7 is meant for ?

akbagaria

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 ???? :D:D:D
 

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Win 7 Ultimate x64Core I7 980X O.C. to 4.0 Ghz12GB 1600 mhz triple channel DDR3 - KingstonATI Radeon HD 5970 2GB Video Card
Computer Manufacturer/Model Number
Alienware Aurora
OS
Win 7 Ultimate x64
CPU
Core I7 980X O.C. to 4.0 Ghz
Motherboard
Custom Intel mATX (Bios ver A10)
Memory
12GB 1600 mhz triple channel DDR3 - Kingston
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ATI Radeon HD 5970 2GB Video Card
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Creative Labs Titanium sound blaster
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30" Dell LCD
Screen Resolution
2560 x 1600
Hard Drives
240 GB OCZ Vertex 2 SSD
256 GB Samsung V2 SSD
2TB WD Black Caviar 7200 rpm SATA3
600GB WD Velociraptor 10,000 rpm SATA3
3TB WD MyBook Essential USB 3.0 7200 rpm External
PSU
850 Watt
Case
Alienware Aurora
Cooling
Water
Keyboard
Logitech G15 (original version)
Mouse
Logitech MX1000 Laser - Wireless
Internet Speed
Cable 22 Mb/sec download
Other Info
USB 3.0,
Blue Ray DVD Read/Writer
Bose Companion 3 Speakers
WRT54G Wireless Router
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.
akbagaria
 

My Computer My Computer

At a glance

Windows 7 x 64 BitIntel E21801 GBNone. Built in
Computer Manufacturer/Model Number
Assembled
OS
Windows 7 x 64 Bit
CPU
Intel E2180
Motherboard
Intel D945GCPE
Memory
1 GB
Graphics Card(s)
None. Built in
Sound Card
None. Built in
Monitor(s) Displays
Samsung SyncMaster 920NW
Hard Drives
Samsung HD503HI - 500 GB
Case
Chinese
Cooling
Non extra
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