How can I reformat my SD card to use it normally again?

The accepted, top-voted answer is patently wrong. All it does for Windows and Mac is wiping the tiny FAT partition of the SD card, leaving the Ext3 partition untouched, quite contrary to what the asker requested. Still, with 20 upvotes it's unlikely to be overpassed by the next (correct) answer which, while more complex, achieves the goal.

If the majority votes that Earth is flat... what should we do?

  • As it was my answer I have deleted it. As the answer was accepted it implies that the question may have solved the original users problem. If not the current wording. Sep 11 '13 at 14:13
  • @SteveRobillard: The problem is it looks like it solves the problem, leaving a blank partition. You need to look harder at the results to see it does not reclaim the Linux partition.
    – SF.
    Sep 11 '13 at 14:15
  • 2
    Here's the same question on StackOverflow Meta: meta.stackexchange.com/q/8879
    – Jivings
    Sep 11 '13 at 17:27
  • Yea I was also questioning the answer there as that is NOT how to fully format an SD card. But the other part of the answer does do. People will go and try all the solutions. There are NO downvotes so nobody found it a problem? People must realise the during format what is going and ans search another question, ie how to resize partition?
    – Piotr Kula
    Sep 17 '13 at 14:05

Taking from Jivings's comment above (since it's worth posting as an answer), from How to deal with upvoted yet clearly wrong answers on Stack Overflow:

  • Leave a comment
  • Downvote the wrong answer
  • Provide or upvote a correct answer
  • If it is really, really wrong (as in dangerously worng, like 'delete C:\NTLDR in order to improve computer performance'), flag it for moderator attention.

Just comment on it saying it's wrong and downvote it yourself. Flag it as:"Not an answer". I don't think there is much more to do actually.

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