SAGEM DTR67250

How to use TestDisk to recover lost partition
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Author
daystrom
Posts: 19
Joined: 17 Apr 2012, 02:58

SAGEM DTR67250

#1 Post by daystrom »

I think the MBR may be faulty (no partition data at all).
TestDisk and PhotoRec doesnt seem to detect anything. I've noticed that the menu option has HUMAX but no other PVR unfortunately. Is cgsecurity going to support other PVRs?

So far, EaseUS Partition Recovery, gave the best results. It recovered some files but thinks its a FAT32 system and saved them as SWF files. When you view the files via VLC, it does play as a movie. However theres a reoccurring glitch with a frequency of a couple of seconds and its only a partial file recovery.

Any idea how to go about the SAGEM DTR67250 hard drive? thanks.

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remy
Posts: 457
Joined: 25 Mar 2012, 10:21
Location: Strasbourg, France.
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Re: SAGEM DTR67250

#2 Post by remy »

removing from enclosure ?

daystrom
Posts: 19
Joined: 17 Apr 2012, 02:58

Re: SAGEM DTR67250

#3 Post by daystrom »

yep its out of its box,
the Sagem pvr stopped working over a year ago (I've been using Humax instead. fantastic little box).
the DTR67250 frequently froze, and the only way to restart it was to unplug it. It sometimes froze half way through a recording.
I scanned it with photorec last night and managed to get something but it was similar to EaseUS Partition Recovery. They saved as mpg and when viewed with VLC, they were similar to EaseUS Partition Recovery.
I also tried turning off all file extensions, but leaving .ts selected. It found several thousand .ts files every one of which were 127kb in size.
I'm out of ideas :(

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Fiona
Posts: 2835
Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: SAGEM DTR67250

#4 Post by Fiona »

Would it be possible to upload a screenshot from TestDisk and Analyse to watch your current situation?
I'd like to see, why Testdisk didn't find something.

Fiona

daystrom
Posts: 19
Joined: 17 Apr 2012, 02:58

Re: SAGEM DTR67250

#5 Post by daystrom »

Fiona wrote:Would it be possible to upload a screenshot from TestDisk and Analyse to watch your current situation?
I'd like to see, why Testdisk didn't find something.

Fiona
No probs. it'll take a while though. I had tried analysing with none partioned, Humax, PC, and one other. The none partioned option took about 10 hours.
Will upload images by the end of today or tomorrow. thanks.

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Fiona
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Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: SAGEM DTR67250

#6 Post by Fiona »

None partitionned media are rare.
TestDisk will scan each sector and it consumes time.
Intel partition table scans cylinder.
1 cylinder with 255 heads (0-254) and 63 sectors per head are about 8 MB.
It's gonna speed up your scan drastically.
Reason why I required a screen, I'll check your geometry from your disk, to have a try why TestDisk didn't find something.
So it's only intended for diagnose purposes.

Fiona

daystrom
Posts: 19
Joined: 17 Apr 2012, 02:58

Re: SAGEM DTR67250

#7 Post by daystrom »

When I select Intel it presents me with the follow message, before I start searching for partitions.
Partition sector doesn't have the endmark 0xAA55

The Intel scan result is as follows.
Intel scan result
Intel scan result
sagem3.jpg (20.8 KiB) Viewed 5395 times

The none scan result is as follows at 38% complete. At 100% there are a few more lines of HFS and VMFS.
None scan result
None scan result
sagem2.jpg (26.33 KiB) Viewed 5395 times
I hope that helps.

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Fiona
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Joined: 18 Feb 2012, 17:19
Location: Ludwigsburg/Stuttgart - Germany

Re: SAGEM DTR67250

#8 Post by Fiona »

Partition sector doesn't have the endmark 0xAA55
The MBR and boot sector have a signatur that they're valid.
If they're not valid, you'll receive this message.
If there is no partition nor boot sector like in your case, you'll get this message too.
It's a screen from Quick Search.
A Screen from Analyse would be appreciated too.
You can distinguish it, there is a note, "current partition structur" and would be an screen earlier.
But I assume, it would be empty?

Fiona

daystrom
Posts: 19
Joined: 17 Apr 2012, 02:58

Re: SAGEM DTR67250

#9 Post by daystrom »

The page with "current partition structure" is identical to the first image except for the title "current partition structure" and the "Partition sector doesn't have the endmark 0xAA55" message, theres no other information.

I can upload the image but theres no extra info below the headings Partition, Start, End and Size. Sorry.

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remy
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Re: SAGEM DTR67250

#10 Post by remy »

May you please post a dump of your first disk sector

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