ROM Hack Deleting Extdata using Scripts from Plailect’s Guide

Tortitamal

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Will erasing Extdata following this guide afffect any game? Or only the home menu? What's exactly erased when doing this procedure?
clear Home Menu’s extdata by following these instructions:
  1. Power off your device
  2. Launch GodMode9 by holding (Start) during boot
  3. Press (Home) to bring up the action menu
  4. Select “Scripts…”
  5. Select “GM9Megascript”
  6. Select “Scripts from Plailect’s Guide”
  7. Select “Remove extdata”
  8. Press (A) to continue
  9. Press (A) to unlock SysNAND (lvl1) writing, then input the key combo given
  10. Press (A) to continue
  11. Press (B) to return to the main menu
  12. Select “Exit”
  13. Press (A) to relock write permissions if prompted
  14. Press (Start) to reboot your device

I just erased it and my home menu reset, and all my apps were wraped like new. But all the saves I checked where still there. So what exactly did I erased?
 

lone_wolf323

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Will erasing Extdata following this guide afffect any game? Or only the home menu? What's exactly erased when doing this procedure?
clear Home Menu’s extdata by following these instructions:
  1. Power off your device
  2. Launch GodMode9 by holding (Start) during boot
  3. Press (Home) to bring up the action menu
  4. Select “Scripts…”
  5. Select “GM9Megascript”
  6. Select “Scripts from Plailect’s Guide”
  7. Select “Remove extdata”
  8. Press (A) to continue
  9. Press (A) to unlock SysNAND (lvl1) writing, then input the key combo given
  10. Press (A) to continue
  11. Press (B) to return to the main menu
  12. Select “Exit”
  13. Press (A) to relock write permissions if prompted
  14. Press (Start) to reboot your device

I just erased it and my home menu reset, and all my apps were wraped like new. But all the saves I checked where still there. So what exactly did I erased?
extdata is something you want and need. it not only affects the home menu but some games save via extdata. so if there was any of those games. they just got wiped clean and will be started all over again provided no previous backups were made.
 

Tortitamal

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extdata is something you want and need. it not only affects the home menu but some games save via extdata. so if there was any of those games. they just got wiped clean and will be started all over again provided no previous backups were made.

So this script erases all extdata? Or only the home menu ext data?
Is there a list besides https://www.3dbrew.org/wiki/Extdata that specifies what stuff games to extdata?
 
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