I accidentally deleted important custom (not known-or-commercial) files from my scientific researches on image processing.
I created the files by collecting raw digital signals from an image sensor.
Then I raw write the file as byte array and there's no "file signature". The only thing is that the first 200 bytes are reserved for QJSON Object that I store with some watermark information and the following image content size.
Is there any way I could recover the files (around 200GB).
I have tried photorec and testdisk, but they find a lot of .txt/.jpg/.bmp files which don't exists on my Operating System
my HDD structure:
500GB: sda1 is / -> Ubuntu 14.04 linux root with 57GB ext4 sda2 is extended partition sda5 is swap partition with 1.5GB sda6 is /opt with 400GB ext4 formatted with my files on /opt/research-data/rawimages/*.xyz
Extra question: If I
dd the hole HDD to a secondary HDD, will the deleted raw images also be
dd'ed to the secondary HDD?
What can I do to get my files back?