What's   "...start in Single User  mode"? HOW? and WHY?

A silly question...
What's "...start in Single User mode"? HOW? and WHY?
Can anyone, please explain that to me?
Cheers!

Hello Nando,
The only silly questions are the ones that never get asked
Have a look in here...
Single User Mode
Hope that helps
Regards
Ian

Similar Messages

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    If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to bare metal from any of them.) Don’t erase the recovery partition, if present.
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  • Unable to start in single-user mode - HD dead?

    My MacBook Pro (Mac OS X) refused to start, it hung up on the loading screen where you see the apple and the spinning loading wheel. I found out how to fix this, I had to go into single-user mode and type "/sbin/fsck -fy" to repair/verify the disk (I was unable to do so from the Disk Utility via the Install Disc, the repair/verify buttons were just grayed out).
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    On the point of contacting the folks at Alsoft, I have found that they seem to be unobtainable on www.alsoft.com at present.
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    Am I in a minority of one here?

  • Impossible to boot MacBook Pro Retina ! impossible to start in single user mode, Openfirmware password set, but safari works!

    I have got a Macbook pro retina.
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    When I start, I have a directory with a question mark.
    I have a Open firmware passwords set (that I remember).
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    I can choose a disk to boot. I see only the OS drive and not the user partition, and no 'recovery partition'. It seems that i need to do a fsck -yff on the user partition but how ?
    I can start the OS partition, and i can choose 'guess' or 'myself'. If i choose myself, I have an error message :'there is a error, the session can not start'. If I start with the guess account, I restart, and then I can browse the internet with safari (this is how I am writing this text!)
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    Actually, the recovery partition was there, but was not shown as my user partition. I have seen that reseting the PRAM and changing the ram could remove the open firemware password. So i have turn the computer on until the battery was empty. Then I boot about 20 times, and unplug the power supply after few seconds at different step of the booting pricess. At last, the screen default resolution when booting changed, I undertood that i succeeded, and I was able to enter.
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  • MacBookPro does not start in Single User Mode

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    Resolution:
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    Dear Holden, Sorry for yesterday but my internet went dead (i'm in thailand)
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    Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers
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    try
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    hsawwan wrote:
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    Restart the computer with the Option, Command, P, and R keys held down. Release them upon the second startup chime.
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