In this case, I would recommend to ask a new question about the troubles you've had with that answer, and include a link. This has three purposes:

1. It will draw the attention of more senior AskUbuntu users, who may comment on the "bad" answer, and possibly edit it to correct mistakes or make the procedure clearer -- that is, things that might have led to your data loss.
2. Asking a good question will earn you upvotes, and thus reputation.
3. And of course, you will hopefully find a solution to the problem.

In this case, I would recommend asking a new question about the troubles you've had with that answer, and include a link. This has three purposes:

1. It will draw the attention of more senior Ask Ubuntu users, who may comment on the "bad" answer, and possibly edit it to correct mistakes or make the procedure clearer -- that is, things that might have led to your data loss.
2. Asking a good question will earn you upvotes, and thus reputation.
3. And of course, you will hopefully find a solution to the problem.