Solved lost partition on memory card

May 23, 2019 at 06:24:13
Specs: Windows 7, 8GB

I have an SDHC memory card which I use for different types of machines like my photo camera, and my dashcam.
When used (formatted) by my dashcam, it creates one small (1GB) partition where it puts its own software.
The data is stored on a partition invisible for default Windows access (Windows explorer).
The application (an .exe file) can get the files from the invisible partition/raw section of the card, in order to get the files.

Now, I used the card for my photo camera, which uses the card in a traditional manner: 1 big, normal partition.
I probably did something wrong, like removing this card while it was being written.

I know there are pictures written to it successfully.
But when I look the card in Windows (Explorer), it shows me the small partition's content, as detailed in the start of this post.

I figured out something is wrong with partitions, so I used the MiniTool application to see the partition and files (pictures and vides).
It can actually see both the big partition, and the files in it (the pictures at least).
So, I *KNOW* the files are on there.
The free version of that software doesn't allow for the pictures/files to be restored, only viewed in the internal viewer.

From the Windows Disk Management (diskmgmt) tool, I cannot see anything except the small (wrong) partition.
So, for some reason, the good partition is no longer displayed.

When you insert the card, it also states to fix errors, but I have that for other cards as well, and I have never seen any issues on the cards, no matter if you "fix" the issue or not.

Question is: what software or action should I do, to recover my "lost partition" ?


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✔ Best Answer
May 23, 2019 at 22:08:07
Check the content - suggestions - in this post. There are a few possobles which may help?

https://www.computing.net/answers/w...

message edited by trvlr



#1
May 23, 2019 at 09:18:02
Try Recuva, it's free and recommended by many techs on this site. It won't recover the partition but it most likely will find your lost photos..

After you recover them, I would suggest buying a new card and using that solely for your dashcam.

https://www.ccleaner.com/recuva

message edited by THX 1138


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#2
May 23, 2019 at 10:23:02
THX 1138

You say that Recuva won't recover the partition. Can you
expand on that a bit? I have an old hard drive with deleted
files and folders (but not partitions) that I plan to recover
using a program similar to Recuva, and would like to know
more about what I'm doing, first.

-- Jeff, in Minneapolis


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#3
May 23, 2019 at 11:44:13
I'll have a try with Recuva, see how that works out for this case

I often swap memory cards between different devices, but only the dashcam formats it that way, so that it has this one small partition (and raw data for the rest). But I just Windows format those disks when I use them for my camera (or any other device).

I'll give it a try & report
Thanks


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Related Solutions

#4
May 23, 2019 at 15:56:34
Windows has built in utilities to delete all partition information on the drive.

Go to a CMD prompt. Then:

DISKPART

When it comes up, LIST DISK

Find the drive you want to clear. Make sure you get it right!!!

Then SELECT DISK # as in SELECT DISK 3

Then type CLEAN

If it errors, try CLEAN again.

When it is done, use disk management to recreate the partition information and format the drive.

message edited by DanJ


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#5
May 23, 2019 at 21:03:31
Hi Jeff,

Recuva is not a partition manager but it is pretty good at finding deleted files as long as new data hasn't written over them. Make sure you install it to a partition that isn't where you're looking for the files.

Different recovery programs use different algorithms to find files so if the program you already have doesn't find everything you are looking for, have a go at it with Recuva.


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#6
May 23, 2019 at 22:08:07
✔ Best Answer
Check the content - suggestions - in this post. There are a few possobles which may help?

https://www.computing.net/answers/w...

message edited by trvlr


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#7
May 27, 2019 at 01:54:09
> Check the content - suggestions - in this post. There are a few
> possobles which may help?
>
> https://www.computing.net/answers/w...
>

That seems quite useful, I've gathered the below list of tools which are potential candidates for the job. Even though that thread hasn't got a clear solution, it wouldn't matter since recovery cases tend to be different anyway. I think I will start first with Recuva because that one is mentioned both in the referenced thread and in this one. Actually, I used it before, for a case of deleted file after a format that shouldn;t have happened. Also note I'll exclude all paying versions, since I think there will be good & free software to do the job. Some doubts over the Minitool recovery software, as the "main" software set (the partition manager function) didn't let me recover files without paying. I used Minitool successfully to manage (clean) some bad partitions, and it is good software. But the question is a bit different here ...


- Recuva
- Stellar
- Advanced Recovery Disk
- KickAssUndelete
- ZAR
- MiniTool Power Data Recovery https://www.minitool.com/data-recov...
- Easus Data Recovery https://www.easeus.com/data-recover...

Also note the data to be recovered is on a data disk (SDHC card) which I don't need to use for anything, so I have all the time to test. I even thought about making a backup of this one, but the problem I have will also prevent that, I assume. But, maybe I can do a bit-by-bit copy ?

message edited by Looge


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#8
May 27, 2019 at 02:19:58
I’m happy to pay for software “if” it does what I want and I will use it often enough to justify cost; or the situation truly requires I use a pay for utility. There are situations when a freebie will not be as user friendly, or is very limited.

Freebie tools are often adequate in many situations, but there are occasions when a pay for version is required.

Your list is interesting as it has a few items new to me., for which thank you nonetheless


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#9
June 1, 2019 at 15:15:53
We have a winner ! In MY CASE this is the software that could do it all; all files recovered, in an easy way, and free !

It is : ZAR, or Zero Assumption Recovery ( https://www.z-a-recovery.com )

An honorable mention goes to both Recuva and MiniTool - If you pay for the software, you can recover more than the limited 1 Gig & it looked like it could have done that. With Recuva I could actually get half of the files back in an easy way. I think that with MiniTool you can get some files back as well, but you often get hit with "upgrade messages".

Did not work for me : Stellar (main issue is a weird free registration process),
KickAssUndelete (would not let me choose any removable disk)
EaseUS (it just hung when trying to read the drive)

More details will be posted, for each

message edited by Looge


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