Root When and why do I "wipe data" and/or "wipe dalvik"

Discussion in 'Android Devices' started by synergy7, Jan 14, 2012.

  1. synergy7

    synergy7 Well-Known Member
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    Dec 23, 2011
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    I just made a backup and I have restored my phone from a previous point. I forgot to wipe my data and dalvik.

    When do I wipe data or dalvik and why?

    Before every restore?

    Before I change ROMS?

    Before flashing a kernal?

    Thank you for your time!
     

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  2. wayne137

    wayne137 Well-Known Member
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    when you flash a new rom should you do a complete data wipe
     
  3. ManlyParasite

    ManlyParasite Well-Known Member
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    When you restore, you don't have to wipe anything.
    When you flash a ROM, wipe everything
    Flash a kernel or theme, wipe cache and dalvik. Might not be necessary depending on what's being flashed, but unless it says otherwise you should wipe these.

    Note:
    Wiping data will remove your apps, personal info, logins, and settings.
    Wiping system will remove system apps and everything else needed for the phone to run, or even boot.
     
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  4. synergy7

    synergy7 Well-Known Member
    38

    Dec 23, 2011
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    atlanta , georgia
    thanks for the easy to read reply. also, what would happen if you dont wipe these different things?

    Sorry for so many questions. Just a very curious noob who wants to know everything :D
     
  5. mrpnut

    mrpnut THE WORLD IS YOURS
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    also you only wipe cache and dalvik cache when installing a custom theme
     
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  6. Jeyd02

    Jeyd02 Well-Known Member
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    To help people, currently student
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    Lets say if you are flashing CM9 rom to the phone and don't wipe cache or data , as you begin to use the rom you notice it'll be unstable and it'll feel real sloppy. You could end up with lots of reboots as well as force closes because those cache and data are incompatible with that new rom you have installed. There are time as well when you phone will be in boot loops because you didn't clean your previous rom properly. So yeah, if you don't wipe there will be corrupted files that wont be so friendly with the new rom.

    Note ; there are times when you don't need to wipe data (data only), as seen with gingeresteen to gingeresteem extreme. Why? Because those "custom roms" are built from the same core so all the files and source codes are the same. Data as manlyparasite said is all the information and applications you have installed into your phone.
     
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  7. synergy7

    synergy7 Well-Known Member
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    I get it now. That was the "why" . Great reply. Helped me grasp the concept of all this!
     
  8. mrpnut

    mrpnut THE WORLD IS YOURS
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    yes sir make sure u do a back up before u do a complete data wipe
     
  9. PlayfulGod

    PlayfulGod Well-Known Member
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    Some times a fill wipe isnt needed, always go by what the Dev states. ;)
     
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  10. revogozoom

    revogozoom Well-Known Member
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    I always do a full wipe when "flashing roms" :p
     
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