Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.



Windows 7: Partition / Extended : Logical Drives

24 Feb 2011   #19
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 
Partition / Extended : Logical Drives

How to Create Extended Partition / Logical Drives Where Needed
The Windows Master Boot Record (MBR) partition structure supports a total of only four (4) partitions per Hard Disk Drive / Solid State Drive, they can be either 4...

My System SpecsSystem Spec
.

04 Dec 2011   #20
whs

Microsoft Community Contributor Award Recipient

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I think there is a historic reason why the OS boot partition is still installed on a primary partition. Before Windows7, there was no hidden system partition which is the active partition containing the bootmgr.

In e.g. Vista the boot partition and the active partition were the same - namely C:. Thus C: DID contain the bootmgr (as active partition) and an active partition has to be a primary.

If you install Windows7 to a predefined primary, active partition, the installer will not create the 100MB seperate active partition. In this case you could not change that partition from primary to logical.

Next question would be why do we need a seperate 100MB active partition. But that is another long story.

My System SpecsSystem Spec
.

05 Dec 2011   #21
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Quote   Quote: Originally Posted by sonovaio View Post
Yes I know. But...
- I asked ... if all we need to create another partition on pc, why HP (and other marks) have before created 4 primary hard drive, if then we have convert one into logical? They could create pc with 3 primary and 1 logical yet. Since they create C: as primary... for this reason I'm "afraid" to convert it. Is there a reason they create exactly C: as primary?
- And then, if I convert C: into logical... I will not be able to install another operating system. Are you agree? Or I will be able to?

Sorry for my terrible language
No problem mate.

In addition to Wolfgang's post above, I believe that the OEM's like HP set the HDD up with 4 primary partitions to make it harder to make changes to the HDD structure. They could have just as easily created 3 primary and the rest logical. My guess is that they would prefer for the end user to add a second physical HDD and leave the factory one alone to preserve and protect the factory recovery partitions.

If you convert C: into a logical partition, it will not affect your current installation of Windows 7. If you shrink C: into some unallocated space and create another logical partition from this unallocated space, then yes you could install another OS if you like and if it's large enough to dual boot with your current Windows 7.

If your laptop supports having a second internal 2.5" HDD installed, then that would indeed be best, and make install another OS easier since you would not have to worry about the partitions on the factory HDD and would have plenty of free space.
My System SpecsSystem Spec
05 Dec 2011   #22
sonovaio

Windows 7 Ultimate x64
 
 

Thank you Wolfgang and thank you Brink!!!
Perfect explanation!

Another question: there may be the problem to make C: bootable again after the conversion? For example to make a boot from the DVD boot of Windows 7 and perform a recovery opening? Is there this risk after conversion?

Thanks a lot!
My System SpecsSystem Spec
05 Dec 2011   #23
whs

Microsoft Community Contributor Award Recipient

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by sonovaio View Post
Thank you Wolfgang and thank you Brink!!!
Perfect explanation!

Another question: there may be the problem to make C: bootable again after the conversion? For example to make a boot from the DVD boot of Windows 7 and perform a recovery opening? Is there this risk after conversion?

Thanks a lot!
I don't see what possible risk you could be referring to.
My System SpecsSystem Spec
05 Dec 2011   #24
sonovaio

Windows 7 Ultimate x64
 
 

Sorry, for "risk" I would mean "circumstance", "event".
There may be the forced circumstance (obligation) to have to make C: bootable again after the conversion? For example, must make a boot from the DVD boot of Windows 7 and perform a recovery opening? Is there this circumstance, this event after conversion?

Sorry again
My System SpecsSystem Spec
05 Dec 2011   #25
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Sonovaio,

Converting C: from primary to logical will not affect it's bootability at all.
My System SpecsSystem Spec
19 Dec 2011   #26
sonovaio

Windows 7 Ultimate x64
 
 

Hello again!
My question is about Method Two:
After point 1 and point 2 (set disc C: as logical with Partition Wizard Bootable Disc), at point 3 can I shrink volume with a different program of Windows 7 default? For example another program as "Easus Partiton Master" or "Partition Wizard Professional Edition"? Windows 7 don't let me shrink over a certain quantity.

Thanks a lot
My System SpecsSystem Spec
19 Dec 2011   #27
whs

Microsoft Community Contributor Award Recipient

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Sure you can do that. i would use PW. But make an image of all partitions on the drive first. I once lost all partitions due to an itty, bitty mistake with PW. Better be safe than sorry.
My System SpecsSystem Spec
21 Dec 2011   #28
mithubdn

Windows 7 Home Premium(SP-1) 64bit.
 
 

Hello Everyone!

I would like start here by giving thanks to you and to the forum first as I have just had much info about Windows 7 partitioning structure, MBR etc all this sort of things!

I have just got a HP with 4 built in same Primary partition:
1. System (System, Active),
2. C: (Boot, Page File, Crash Dump)
3. Recovery
4. HP-Tools

I was looking for the ans if I can merge partition 1 and 2, as they are together, using some tools. Is it possible to function the OS?..or same merge 3 and 4??

If the merge is OK then I would prefer to do that rather than using method-2 mentioned in the tutorial, because of less effort!!

Thanks!
My System SpecsSystem Spec
21 Dec 2011   #29
ignatzatsonic

Microsoft Community Contributor Award Recipient

Windows 7 SP1, Home Premium, 64-bit
 
 

System Reserved Partition - Delete

Above tutorial should show you how to get rid of the system reserved partition.

You can't merge your recovery partition and the tools partition. You could delete the recovery partition if you have made recovery disks--although I'm not sure I would.
My System SpecsSystem Spec
Comment

 Partition / Extended : Logical Drives





Tutorial Tools



Similar help and support threads for2: Partition / Extended : Logical Drives
Windows 7 Tutorial Category
How to extend an Extended Partition; leave logical volumes intact General Discussion
Can I install Win XP on a 4th logical/extended partition? Installation & Setup
Solved Partition / Extended : Logical Drives Installation & Setup
i cant convert extended partition to logical partitiion.. Installation & Setup
How do I make an extended partition with logical General Discussion
Difference between Primary, Extended, Logical Partition General Discussion
how to create an extended partition with logical drives Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 10:16 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33