HT201250 My backup external hard drive hasn't work since I insalled Snow Leopard. Bad:(  I am still learning about my MAC and would just like to re-format the hard dive and set everything up again. I want to upgrade to Lion but can't untill I backup what

My backup external hard drive hasn't work since I insalled Snow Leopard. Bad:(  I am still learning about my MAC and would just like to re-format the hard dive and set everything up again. I want to upgrade to Lion but can't untill I backup what I.

Read through the links here, calm down and take your time.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents

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  • External hard drive doesn't work on iMac, does work on PC

    Hi everyone.
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    I currently only have the one cable. But somehow, while I typed the original post, the hard drive popped up, so as of now the problem's been solved. I have no idea how, whatsoever.
    <Edited by Host>

  • HT4061 I bought my mom an iPad for Christmas this year.  We can't use it as it will not recognize her passwords.  How do I reset it without using passwords.  I want this thing wiped clean, just like it came from the store so that I might start over.

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