It is generally accepted that it is impossible to recover data from a single wipe on modern hard drives. There is some mention of it here https://en.wikipedia.o

It is generally accepted that it is impossible to recover data from a single wipe on modern hard drives. There is some mention of it here https://en.wikipedia.org/wiki/Data_erasure#Number_of_overwrites_needed https://en.wikipedia.org/wiki/Data_erasure#Number_of_overwri... and also I believe I read somewhere that there's unclaimed prizes available for anyone who can prove otherwise (but I do not have a source available for that now). What can bite you is the drive firmware silently remapping sectors, causing your write request to be mapped to a different sector altogether.