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Old Nov 14, 2009, 02:46 PM   #1
Bill P.
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New iMac i7 will not boot into Single User Mode

I hold down the Cmd & S keys (just like on my older iMac) and after a delay it boots up as usual. I just got this iMac yesterday (brand new).

I experienced the monitor going bland for a second a few times along with some other vertical lines and wanted to run the fsck function as I have on my other macs. No go....

Thoughts?

Thanks,

Bill
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Old Nov 14, 2009, 02:53 PM   #2
Sun Baked
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Wireless keyboard?

If so might have to plug one in a wired keyboard from the Mac in the closet.
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Old Nov 14, 2009, 03:22 PM   #3
Bill P.
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Ah, good idea SB. Didn't have that problem on the old 20 incher....I'll give it a shot!

Enjoy your Saturday!
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Old Nov 14, 2009, 03:26 PM   #4
Sun Baked
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Quote:
Originally Posted by Bill P. View Post
Ah, good idea SB. Didn't have that problem on the old 20 incher....I'll give it a shot!

Enjoy your Saturday!
Apple had that problem when the keyboards first came out, took awhile before they corrected it.

Just figured that it would be typical for a new chipset and all the rewrites in the OS to cause the issue to pop up again.
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Old Mar 30, 2010, 08:46 PM   #5
JDW
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Problem is not exclusive to wireless keyboards

I have a wired Macally keyboard that I have been using with my March 2009 iMac 3.06GHz. I am also using the wired Mighty Mouse, connected to the keyboard. Never had any problems until today. I tried 2 times to boot into Single User Mode by holding down CMD-S. The OS just ignored my keyboard presses and booted back to the Finder.

I then pulled the stock Apple keyboard (wired kind, without the numeric keypad). I then rebooted, quickly held down CMD-S, and to my surprised it worked. I got the command line. However, I then could not type anything. So I connected my Macally keyboard back (after having disconnected the Apple keyboard) and then I could type.

Not sure what's going on here, but that is my experience.
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