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Die Symptome hatte ich auch schon bei kommerzieller Datenrettungssoftware gesehen.
Auch umgekehrt, das mov-Dateien als mp4 wiederhergestllt wurden.
MP4 ist in TestDisk in einer Dateityp-Famile bei *.mov mit eingepackt.
In PhotoRec kann unter FileOpt s gedrückt werden um alle Dateitypen abzuwählen ...

TestDisk can find a FAT32 LBA boot sector or its backup earlier.
The backup of the FAT boot sector is sector 6 of your partition.
Boot sector is always the first sector of a partition.
On NTFS the last sector of your partition is the backup of your boot sector.
That's why Deeper Search is ...

As long as you don't use Write, Repair FAT or NTFS and BackupBS or OrgBS, nothing would be changed to your disk.
When you close TestDisk, all modifications will be lost.
The menu Advanced makes only sense, when your partition in your partition table would be correct.
TestDisk / Analyse displays your ...

On EFI GPT partitions are listed as MS Data.
When you select a partition, at the bottom of the testdisk display, you´ll find info about your boot sector or superblock and file system.
TestDisk detects your partition table as Intel and not EFI GPT.
It's probably the cause, why your GUID partition ...

Can you copy and paste the content of your testdisk.log into your next post?
I'd like to check the status of you current partition structure (partition table).
When your partitions are available, it might be an idea to check your boot sector and its backup.
Maybe to run a RebuildBS to have a try to ...

Könntest du mit der tiefere Suche Deeper Search noch Partitionen mit Daten anhand des Backups vom Bootsektor finden?
Wenn ja, kopiere mir bitte den Inhalt deiner testdisk,log in deinen nächsten Post.
So kann ich den Bootsektor, sein Backup und dein Dateisystem auf Fehler untersuchen.

Fiona

How is you disk listed in your disk management console?
Is you disk displayed as not initialized?

Fiona

Can you download and test the latest version of TesDisk 7.1WIP 32bit and test it?
http://www.cgsecurity.org/Download_and_donate.php/testdisk-7.1-WIP.win.zip

Your file system looks faulty.
file_win32_pread(144,16,buffer,6134280(381/214/34)) read err: read after end of file
file_win32_pread(144,1 ...

Did you scan Free or Whole Space?
When you use the option Free, only deleted files would be recovered.
Whole space scans the entire space of your disk or partition and will recover every supported file.
Tip would be, you can use the menu FileOpt and press s to deselect all file types and you can ...

Did you already go into your device manager and USB-Controller?
You can select your Generic USB HUB, right click on it, choose Properties and Energy-Management and you can disable that your PC switches off your USB device to save energy.
Also watch the energy-options of your PC.

Fiona