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Windows 7: dynamic disk conversion avoidence

19 Sep 2014   #1
robbybobs

windows 7 ultimate x64
 
 
dynamic disk conversion avoidence

I'm using Windows 8.1 pro and I've just expanded my raid 6 (via a raid controller) from 4 x 4TB to 8 x 4 TB (22.3TB). I have two partitions on this disk, one at .5 TB and the other has been expanded a bit as I expanded the raid disk size. At the moment its at 13.8 TB and I've got 8 TB spare, but as I try to increase this partition to utilise all the spare space, Windows tells me that it can only do so by converting it to a dynamic disk. From what I understand about dynamic disks, they're great unless you want to expand them, and you never know!
Why does Windows insist on converting to a dynamic disk and can I avoid it?
Many thanks,
Robby


My System SpecsSystem Spec
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19 Sep 2014   #2
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

It looks like windows regards your extension like a new disk and wants to create a spanned (dynamic) disk. I would try with Partition Wizard and see whether it can be done without the dynamics.

Free Partition Manager for Window PC | MiniTool Partition Wizard Free Edition
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19 Sep 2014   #3
robbybobs

windows 7 ultimate x64
 
 

Hi Whs,
Thanks for your thoughts. Is there a risk running that software to the current partitions?
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19 Sep 2014   #4
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

There is always a risk with any partition manipulation. I usually recommend to protect yourself with an image. But given the amount of data we are talking about here, that may be difficult.
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21 Sep 2014   #5
robbybobs

windows 7 ultimate x64
 
 

Hi Whs,
Do you consider the risk of loosing everything, if I run Partition Wizard to be 1 in 2 or 1 in 1000000? I have to idea of the risk I'd be taking!
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21 Sep 2014   #6
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

This is really hard to say. If everything is correct and it runs normally, there should be no problem. I have done that several times and all went well.

But once I made a very small mistake with PW and lost all partitions on the disk. Fortunately I had images of all and it was not a big problem for me.
My System SpecsSystem Spec
21 Sep 2014   #7
LMiller7

Windows 7 Pro 64 bit
 
 

The risk is hard to quantify but I would consider it much higher than 1 or 2 in 1000000. I have experienced a failure during a repartition and have heard of others.
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 dynamic disk conversion avoidence




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