I though Linux usually did a quick Format of DOS I am assuming Android would do the same. I can't say about SDCARDS My Knowledge of them is that either it works or it don't I do regular backups of my card so that moment that it don't work no biggie put a new one in and start again. My recovery experiance is left on the Hard Disk. It feels like I have Recovered The internet as much stuff as I have had to recover for Friends, Family, Fat and Psychopathic wives. However the reality of it is that I haven't come close to the vast number of data as the internet just feels like it
I have "Accidently" Formated Fat drives within Linux and was able to us unformat to get it back. However the real lesson here is
1. Always have a Backup
2. Make sure of what your doing before you do it.
Those two alone could have saved valuable time for me and a host of people I've had to get data back for.