This has been asked quite a few times before but I want to add something extra hence a new question. Please take a moment before marking it as a duplicate.
I had dual booting with Windows 10 and Ubuntu 15.04 but later thought would replace it with only Ubuntu 16.04. I also had a partition on Windows to store personal data. While creating partitions for fresh Ubuntu installation I accidentally formatted the backup partition instead of the Windows partition.
I am now more keen to find out the list of files that I have lost in the process. I will be more or less okay if I can't recover the data.
From similar answers on data recovery it seems testdisk/photorec is the tool of choice. But I want to know how I can effectively run this from a Ubuntu Live USB stick. When I tried to use Photorec I got an error saying - not enough free space available (I chose an external drive with 700GB free space). If I try using Testdisk it takes a lot of time analyzing the drive (1TB HDD deeper search). As of now my main requirement is to store the list of deleted files in a log or text file.
While I read the testdisk documentation if any expert can help me will be appreciated!
NOTE: Before format the partition was in NTFS and after EXT4
