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Windows 7: How to merge 2 ext HDD into one partition?

07 May 2014   #1
teky

Windows 7 32bit
 
 
How to merge 2 ext HDD into one partition?

i have 2 external HDD each one of 300GB i wanted to merge them into one partition equivalent to approx 500GB(not less). i am using win7 and when attempt to do it with diskmgmt.msc tool:

Drive A = 300GB NTFS format
Drive B = 300 GB raw format (since already deleted volume)

when choose extend volume option for drive A and choose unallocated volume (drive B) got an error object is missing cant perform function

when try to create span volume got similar error.

any suggestions?


My System SpecsSystem Spec
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07 May 2014   #2
derekimo

Microsoft Community Contributor Award Recipient

 
 

Have you tried create spanned volume from the B drive?

Let's see what disk management looks like,

Disk Management - Post a Screen Capture Image
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07 May 2014   #3
teky

Windows 7 32bit
 
 

Main diskmgt.msc screen shot

How to merge 2 ext HDD into one partition?-capt2.png



when i del both volumes (raw format) of ExtHDD and try to create a span vol from either of one got below error:



How to merge 2 ext HDD into one partition?-capt2.png



when one volume in raw format and other in NTFS, tried to extend NTFS vol and selected raw got below error:

How to merge 2 ext HDD into one partition?-capture2.png



not getting any option when selected raw vol:

How to merge 2 ext HDD into one partition?-untitled.png


Attached Thumbnails
How to merge 2 ext HDD into one partition?-capt2.png   How to merge 2 ext HDD into one partition?-capture.png   How to merge 2 ext HDD into one partition?-capture2.png   How to merge 2 ext HDD into one partition?-untitled.png  
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07 May 2014   #4
derekimo

Microsoft Community Contributor Award Recipient

 
 

Why is all of Disk 0 Dynamic? That shouldn't be like that.
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07 May 2014   #5
teky

Windows 7 32bit
 
 

ouch it seems it is not a right configuration; well i dont know i just installed windows and let windows to create partitions and assigned everything
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07 May 2014   #6
gregrocker

 

It looks like you actually converted DISK0 to Dynamic which is only meant to span a single partition across multiple HD's. You'll need to convert it back before Win7 stops booting. Back up your files first, Use Option 1 here to avoid having to wipe out your Win7 install: Convert a Dynamic Disk to a Basic Disk

After conversion I'd also convert D to a Logical data partition so you can add as many adjacent Logical partitions as you want: How to set partition as Primary or Logical with Partition Wizard

As to the externals, I don't think a spanned volume can or should be on removable drives because they are less stable than internal drives, hence you would be risking your data in case one would die or have its file system messed up. If you need a huge storage partition for video files, etc, then look into a larger internal HD for more stablity.

I notice you say you reinstalled Win7 but also kept the HP Tools partition. Is this because you confirmed the hardware diagnostics will still boot from F9 Boot menu, the only purpose for keeping that partition? See the Special Note for HP Owners at the end of Clean Reinstall - Factory OEM Windows 7
My System SpecsSystem Spec
07 May 2014   #7
teky

Windows 7 32bit
 
 

actually i am in mid of data recovery process lost 1TB bitlocker encrypted HDD passwords, long story short trying to recover one of the partition of 1TB HDD and need 500GB free space. at this moment i dont want to reformat either my main drive (Disk 0) however will definitely go through all the tutorials and set everything in proper format later. thanks for the support anyways.
My System SpecsSystem Spec
08 May 2014   #8
gregrocker

 

If you're inclined to experiment then be sure to always have your data backed up, and not to a dodgy spanned pair of externals.
My System SpecsSystem Spec
08 May 2014   #9
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

It's me again and if you all could explain some things to me because I'm confused.

*We started of with.
i have 2 external HDD each one of 300GB i wanted to merge them into one partition

*Then went to all drives being Dynamic including C partition.
*Then to all but one drive being Dynamic. New drive being Basic.
*Then to a 1 TB drive that is Bitlocker encrypted and trying to get the data without a password.

Is this a correct understanding or have I been drinking to much coffee?
I'm trying to follow this thread because it is interesting but I think I must have missed something.
I will go back to watching.
My System SpecsSystem Spec
08 May 2014   #10
derekimo

Microsoft Community Contributor Award Recipient

 
 

From a previous post by the OP Jack,

Quote   Quote: Originally Posted by teky View Post
i encrypted my 1TB External HDD took backup of my laptop on it (including recovery keys backup files). formated my laptop reinstalled windows and now forgot the password for External HDD.

Any suggestions in recovering the key which is already backed up in the encrypted HDD.

thinking to format HDD and than attempt data recovery but not sure if i will be able to recover all or nothing.

It's only Disk 0 that is Dynamic, the other two in the screenshots are the externals they are trying to combine to be able to move 500GB of data from the 1TB drive mentioned in the previous post.

I don't remember all drives being Dynamic, just the system drive Disk 0.
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