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A TRUE wipe

Discussion in 'Android Devices' started by Hawker, Jan 11, 2012.

  1. Hawker

    Hawker Android Expert
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    Aug 2, 2011
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    Going on from my Full wipe thread I was wondering what a Wipe data/Factory reset actually deletes from the device?

    I would imagine it deletes /data, but does it remove anything else? Does it clear the root (/) filesystem full stop, or a select few folders?

    I would also imagine that flashing a ROM would at least remove the /system folder and possibly a few others in the root prior to installation?

    So this leaves potentially lots of untouched folders that will remain lurking indefinitely.

    What is safe to remove?

    For example, on my root partition I have the following folders:
    acct
    app-cache
    cache (gets wiped in a Wipe Cache process)
    config
    customkernel
    d
    data (wiped in factory reset? The dalvik-cache folder is stored within here)
    dbdata
    dev
    efs (very important!!!)
    etc (symbolic link to /system/etc)
    lib
    misc
    mnt
    proc
    res
    sbin
    sys
    system
    tmp
    vendor

    as well as a few files (build.prop and a few *.rc files)

    And as for the /sdcard partition, I have LOADS of folders that remain untouched by a factory reset. Does the *# method wipe any these, or any other folders in the root filesystem that a factory reset does not? I think most of these have been lurking around since day 1 and probably a good few could be removed.

    Does anyone know what gets wiped during a clear data/factory reset/ROM install?
    What is safe/unsafe to remove from the / and /sdcard partitions?
     

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    Twinn, Sydney99 and ironass like this.
  2. Sydney99

    Sydney99 Android Expert
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    Another very helpful guide. You and ironass have really gone the extra mile today. Hope slug is busy adding to the sticky.....
     
    ironass and Hawker like this.

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