I didn't find any partition and HDD appears without partitioning. I try several software lika stellar phoenix, ontrack easy pro, testdisk, R-studio and file scavenger. Testdisk says error code in last sector Ex00AA or something like this. I made a image file but when I try to recover there is nothing.
What can i do? Thanks.

Is it from USB box Prestigio?

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Angel Data Recovery

No is it an internal 2,5 notebook HDD for a Dell Laptop. I have an SATA to USB external adapter manatthan. The adapter is ok, the HDD seems to function but it doesn't recognize a partition. It says unallocated, when I try to create a partition, the partition is created until I check the format flag, in this case it gives me an error and the HDD came back unallocated. Testdisk says an error in the last sector. There is nothing, even the image file have nothing. I don't know how to do to recover my data.
Thanks for the interesting.

P.S.: Why do you ask me if I have a Prestigio USB box? Thanks again for the help.

You can try to recover your files by raw recovery using Winhex but it is not free it is a paid program. Or you can repair you file system first but you need to understand how to repair it. This takes also a hex editor but there is some progams out there that might be able to help you out on this one. Check on test disk this one can look at file system structure and see if it can be repaired using this one. But if not you have to do a raw recovery on your files by file type to find your data on your drive. But before going on like this one you should clone your drive to another one and work from the cloned drive. This way you do not risk more damage to the drive that is failing and giving your problems on it now.

You can also try to contact BlackST he is in Italy he might be able to give you some help on this one and do it for you if you are interested in sending him your drive.

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Iorana Haraharaini

I would examine the partition table and MBR in sector 0, and the first boot sector (sector 63) with a hex editor.

HxD - Freeware Hex Editor and Disk Editor:
http://mh-nexus.de/en/hxd/

Launch HxD. Select Extras -> Open disk -> Select your physical disk. You should now see Sector 0.

To backup track 0 plus the boot sector, you need to select Edit -> Select Block. Select the hex radio button and then set Start Offset = 0, and Length = 8000. This should highlight the contents of the first 64 sectors. Now select File -> Export -> Editor view. Upload the saved text file.

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A backup a day keeps DR away.