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Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
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Accidentally converted basic disk to dynamic disk

March 16th, 2014, 12:40

HELP!

I have a HDD with critical data (work related files, personal family photos and videos etc).

When I connected it to one of my machines it was showing the hdd in computer management but no drive letter was assigned and all options were grayed out except delete volume. I had this happen in the past and I think I did convert to GPT and all was fine. I accidentally converted the hdd to dynamic. Have I lost all the files on it? I've tried GetDataBack for NTFS and it finds a NTFS partition but I can't recovery any files.

Please help anyone!

Many thanks.

Re: Accidentally converted basic disk to dynamic disk

March 18th, 2014, 20:59

If all you did was to convert a partition from basic to dynamic, then you would have changed a single byte in the partition table, assuming it was partitioned in MBR mode.

Could we see sector 0? You could use a disc editor such as DMDE (freeware).

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 6:10

I think I've done this correctly:

Image

Image

I don't recall there ever been a ext3 partition on the HDD. Why is it showing there is one? There can't be a ext3 and NTFS partition both of 750Gb as that's the size of the HDD.

I await further instructions.

Many thanks.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 11:27

Are there any other screenshots I need to post?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 12:55

This is from an external drive, no? If so, what is the full model on the external casing?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 12:58

No its Seagate Barracuda ES.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:00

What operating system do you have on the machine you connected this drive to?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:07

Windows 7 but the NTFS was originally created in Windows 2008 Server I think. Not 100% sure.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:10

I'd be grateful for anyone's help as I desparately want to recover the data on the disk.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:22

The ext partition is strange to me.
Either way, the data should be there in the NTFS partition.
DistortedVision wrote:but I can't recovery any files.


So, can you explain what is the problem in more detail?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:24

The MBR code is Win2K/XP:
http://thestarman.pcministry.com/asm/mb ... br.htm#CHS

Can you show us the contents of sectors 63 and 1465145343?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:25

I connected the hdd to my main desktop. I could see the disk in the BIOS and also Disk Management but the partition was not accessible in Windows. When I right clicked on it in Disk Management everything was grayed out except for Delete Volume. I accidentally converted it to Dynamic Disk.

Hope that clarifies.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:27

Not that part, about why "can't recover files". Meaning are the files corrupt? 0kb in size? The file structure interpretation is wrong? etc.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:31

Image


Image

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:32

Upload screenshots - awaiting moderator approval. I am able to recover some files with R-Studio. But I want to see the directory tree etc. Is there no way I can undo what I did in DMDE and repair the partition?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:35

DistortedVision wrote:I connected the hdd to my main desktop.

What does this mean? Where was the drive before?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:36

My main desktop has Windows 7 on it. It was removed from a Windows 2008 server but I think the partition was created in Windows 2000 Server.

The post with the new screenshots is awaiting moderator approval.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:38

I can recover files with R-Studio but I cannot see the directory tree etc. Is there no way I an undo what I did in DMDE and repair the partition?

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:43

IME the simple solution is to change the partition ID byte from 42 to 07, but there is something odd about sector 63, so we would need to examine it first.

Re: Accidentally converted basic disk to dynamic disk

March 19th, 2014, 13:45

https://dl.dropboxusercontent.com/u/105925038/Screenshot%202014-03-19%2017.26.29.png

https://dl.dropboxusercontent.com/u/105925038/Screenshot%202014-03-19%2017.27.28.png
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