User Accounts Just Disappeared After Updates

I just did a security update and now the user accounts are not present. How do I fix this?

I have a similar problem after installing Security update 2015-002. I can see username at login screen, but can't write the password. Nothing happens when I press buttons on the keyboard. I have to reboot multiple times for it to work.

Similar Messages

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    I was logged in to "bill" last night. I wasn't doing anything special, just running Firefox and iTunes. I went to bed still logged in with the Login Window up. This morning, when I tried to reenter the account my password was refused. After spending several minutes confirming that I was typing the correct password, the caps lock wasn't on, etc., I power cycled the machine. After booting back up, the account "bill" still erroneously refused my password. So I logged in as "Administrator". I tried to reset the "bill" password through the User Account control panel applet, but the Reset Password button was grayed out. Finally I went into the Finder and looked under /Users/bill and saw that the folder was empty. No Desktop, Documents, etc. folder. There is one hidden file in this directory called .autodiskmounted which is zero bytes long.
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    2. Any ideas on how to recover my data? (Or is it, as I suspect, gone?)
    3. Is there any auditing I can do from the "Administrator" account now to figure out what might have happened in my self-immolated "bill" account?
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    If you have a backup in iTunes or iCloud, restore form the backup in order to recover your files.
    iOS: Back up and restore your iOS device with iCloud or iTunes
    Some people recommend using a third party app like this.
    http://www.recovery-ipad.com/restore-ipad-from-backup.html

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    Is this the sequence of events?
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    I'd say that the directory was corrupted at the beginning, and the problems have been carried along with the archive.
    If the disk has errors that DU said it was unable to repair, you should not have proceeded until those errors were sorted out. The disk may even be failing, we don't know.
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    GB

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    http://www.apple.com/emea/support/itunes/contact.html

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  • HT1600 apple tv just flashing after update?

    apple tv just flashing after update?

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    I just updated my iPad to 5.1.1 and iBooks to 2.1.1.  After updating and synching to my iMac, I opened a book that I had purchased one month ago and had been reading.  All the text had disappeared.  I had nothing but blank pages except for the title page and the table of contents.  I went to purchased to try to download it again but the "purchased" tab was grayed out.  I couldn't find a way to activate it.  I tried resetting by holding in the sleep and on/off buttons for 10 - 15 seconds but it didn't change anything.  I tried re-synching with my iMac -- my books are backed up on it -- but that didn't restore the text either.  Can anyone help?

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