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convert system partition from dynamic to basic

Posted on 2010-11-25
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Last Modified: 2012-05-10
I convert dynamic HD0 to basic disk by error
Can we reverse back to dynamic and regain access to the data?
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Question by:romby
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15 Comments
 
LVL 23

Expert Comment

by:ormerodrutter
ID: 34213209
Yes. But whatever you do make a full backup just in case something gone wrong.
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Author Comment

by:romby
ID: 34213257
I have a backup 4 days old
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LVL 23

Expert Comment

by:ormerodrutter
ID: 34213296
Did you mean you couldn't access data on the server since the conversion? If so, the data is no good to you regardless so you have no choice but to convert back to dynamic and restore from backups.

If you can still access data after the convertion, take a full backup and convert.
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Author Comment

by:romby
ID: 34213336
After converssion I have no access to the data.
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LVL 70

Expert Comment

by:KCTS
ID: 34213694
The only way you can convert a dynamic disk back to a basic disk is to remove and recreate the partitions/volumes - this cannot be done without data loss, so it is essential that you have a recent reliable backup from which you can restore the system.
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LVL 96

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 500 total points
ID: 34214137
You are better off trying to figure out what's wrong with the config as the dynamic disk should be readable.  

If you haven't done anything to the drive (made it a part of a RAID or extended it) then I know Microsoft has a tool that can convert it back to basic and I think it's as simply as changing the disk type in the partition table... but frankly, it's been a LOOOOONG time since I had to do this.  

And if you search for "Dynamic Disk Revert Basic" there are many options that come up.
This company offers a product - NOT endorsing it - never used it - but they also offer other methods.
http://www.dynamic-disk.com/convert-dynamic-disk-to-basic.html
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Author Comment

by:romby
ID: 34214560
Thanks Leew but wat I need is to convert back to dynamic.
I just convert the drive to basic by error.
Using Ontrack Recovery I can see the data.
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LVL 96

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 500 total points
ID: 34214955
Sorry, misread the question.  You may be able to use a partition recovery tool... and step 2 of the link I posted, only in reverse.  But if that data is critical, I'd suggest a data recovery service because if you don't get this right, you could lose everything.
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Accepted Solution

by:
romby earned 0 total points
ID: 34236177
-      Finaly I use Diskprobe to fix the boot sector and correct the partition information. Not very easy
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LVL 96

Expert Comment

by:Lee W, MVP
ID: 34236214
The "second way" in the link I provided described doing this... so why are you not selecting my answer?
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Author Comment

by:romby
ID: 34238587
Because you misread the question and the link show haw to convert  from dynamic to basic. Your suggestion to use a data recovery service decide me to not use yours solution. The data was already there.
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LVL 96

Assisted Solution

by:Lee W, MVP
Lee W, MVP earned 500 total points
ID: 34240552
So your suggesting that because it said clearly how to convert from dynamic to basic, you were unable to reverse the process from the instruction provided?  Unable to tell that instead of replacing 42s with 07s, you couldn't surmise from the post that going the other way - from 07s to 42s - would convert it back to dynamic?

"How to modify? Please replace all the "42" to "07" on the above graph, and save the modification to OK. Restart your computer, you will find the disk to be converted to basic, and if you find individual partitions lost, please recover the losing partitions by using Partition Recovery Software. Note that if your operating system exists in extend partition(this is, operating system is a logical partition)"

If that's the case, fine.
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LVL 1

Expert Comment

by:modus_operandi
ID: 34308409
Starting auto-close process to implement the recommendations of the participating Expert(s).
 
modus_operandi
EE Admin
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