Air keeps wifi password even if disk wiped???

Discussion in 'MacBook Air' started by OSMac, Aug 2, 2011.

  1. OSMac, Aug 2, 2011
    Last edited: Aug 2, 2011

    OSMac macrumors 65816

    Jun 14, 2010
    The new Air reinstall process is interesting,
    the system seems to retain your wifi password
    even if you wipe the OSX partition...

    Deleted the users accounts, cleared the auto connect wifi setting.
    Reboot Cmd R, to recovery utility and wiped the main partition.

    Rebooted held nothing ... to a flashing question mark.

    Rebooted option held down ... to a prompt for selecting wifi/password which I ignored

    Rebooted Cmd R held ...
    A spinning globe pops up, and it tells me
    'Starting the recovery process from network this may take a while'
    I confirmed on my router it was connecting
    after the globe stopped spinning (5-10 minutes), it ran the recovery utility.

    How was it downloading with a wiped partition and no wifi password entered?
  2. OSMac thread starter macrumors 65816

    Jun 14, 2010
    No concerns that wiping the boot partition leaves your wifi password on the system?
  3. dekadent macrumors member


    Sep 30, 2009
    Stockholm, Sweden
    My experience is that Wi-Fi password is stored in PRAM, but I cannot find any documentation to support this. When I reinstalled my Air with Lion I reset both SMC and PRAM after wiping the disk entirely clean, and my Wi-Fi password was not remembered.
  4. wolfenkraft macrumors regular

    Mar 6, 2008

    I've heard this. Like the OP, I used the recovery thing and reinstalled a fresh lion, and the recovery partition knew my wifi pw and autoselected my normal wifi router.

    On another new mba, I used disc utility to wipe the osx partition, and then recover just to see how it works and same thing, it knew my router and pw and selected it.
  5. OSMac thread starter macrumors 65816

    Jun 14, 2010
    So if you sell your Air the buyer has free Wifi at your house for life? :)

    Guess the remembered password only works in the reinstall process?

    How do you clear SMC and PRAM on the new Airs?
  6. aristobrat macrumors G5

    Oct 14, 2005
  7. Ztormie macrumors regular

    Oct 30, 2009
    Wouldn't it be easier to just change the password?
  8. OSMac thread starter macrumors 65816

    Jun 14, 2010

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