Board Thread:General Discussion/@comment-28126346-20160404034624/@comment-27701762-20160404035903

Well, if you want to play the Genocide route, that's your only choice. Though if you're having trouble just hitting the reset button, you're not that likely to make it through the Genocide run.

It's not correct that you cannot perform a True Reset after completeing a Genocide run. Rather, completing a Genocide run causes a permanent flag in the game files to be triggered which impacts a particular part of the game. The flag can be removed in a few ways, but they require resetting the game's files manually.

If you want to keep playing, I suggest sticking to the plan you've already set down: reset, complete the Genocide route, then complete a True Pacifist playthrough.