Hi Jon,
Did you try starting up normally after Verbose Mode "Removed one orphaned /
unlinked files and 3689 directories"?
If you cannot startup normally.
Disconnect any devices attached to the iMac and follow the instructions below
precisely.
1. Start Up in Single User Mode:
Single User Mode with "fsck": (Command-S) Running the "fsck" tool directly will
launch the "fsck_hfs" tool on HFS and HFS+ volumes.
1. Shut down the computer if it is on.
2. Press the power button to start the computer.
3. Immediately press and hold 'Command-S' keys until you see some scrolling
UNIX code on a black background.
This allows you to run fsck (File System Check)
4. When it finally stops at at the localhost# prompt Type fsck -fy (note the
space after fsck before the hyphen), then press Return
(The y means "yes", as in "yes, I want you to fix any problems
automatically")
5. Now the file system check program takes over, running through the five sets
of tests.
When its complete, you'll see one of two messages.
A) The Volume Macintosh HD appears to be OK.
All is well. Type exit and press Return to proceed to the usual login
screen and desktop
OR
B) File system was modified. A good sign, but just a beginning. You need to run
the program again.
One fsck pass often repairs only one layer of problems, leaving another to
be patched in the next pass.
Type fsck -fy a second time, a third time, and so on, until you finally
arrive at a "Disk appears to be OK" message.
Type exit and press Return to get back to the familiar world of icons and
windows.
Cheers,
Ronni
On 28 Jul 2014, at 1:44 pm, Jon Davison <jondcamera...@me.com> wrote:
> Thanks Ronni, I don't really understand this too well, but I have rebooted
> in Safe Mode but the problem still persists.
>
> Next I rebooted in Verbose Mode. Bottom line read;
> Removed one orphaned / unlinked files and 3689 directories.
> Then it went black as above.
>
> So I then rebooted in Single User Mode and the bottom line reads;
>
> Root device is mounted read-only
> If you want o make modifications etc……then as you say 'fsck and sbin'.
>
> I don't know what you mean by - 'allows you to move suspicious files to a
> quarantine folder' how do I do that, and what am I looking for?'
>
> Sorry, this is beyond me.
>
> Kind regards
> Jon
>
>
> On 28/07/2014, at 12:27 PM, Ronni Brown <ro...@mac.com> wrote:
>
>> Hi Jon,
>>
>> The iMac has got through 3 stages of the OS X system initialization to Stage
>> 4 which is System Launchd
>>
>> Issues at this stage are indicated by an inability to reach the login screen
>> or log in a user (evidence of a failure by the system launchd process). If
>> the system launchd process is not able to complete the system
>> initialization, the loginwindow process does not start. Your Mac will be
>> either stuck with a black screen or a white screen, depending on how far the
>> system launchd got.
>>
>> I think I have given you these instructions with your previous iMac
>> problems, - here they are again for you:
>> To troubleshoot system launchd issues:
>>
>> 1. Start up the Mac while holding down the Shift key to initiate a Safe
>> Boot.
>> This forces the system launchd process to ignore all third-party fonts,
>> launch daemons, and startup items. If successful, the system launchd process
>> starts the loginwindow. At this point the Mac system has fully started up
>> and is now running in Safe Mode.
>>
>> Completing the system initialization process via Safe Boot indicates the
>> issue may be a third-party system initialization item, and you should start
>> up in Verbose mode to try to identify the problematic item.
>>
>> 2. Start up the Mac while holding down Command-V to initiate Verbose mode.
>> Again, if the text stops scrolling down the screen, examine the end of the
>> text for trouble- shooting clues; if you find a suspicious item, move it to
>> another folder and then restart the Mac normally.
>>
>> * At this point you may be able to successfully Safe Boot into the Finder.
>> If so, use the Finder interface to quarantine suspicious items.
>>
>> 3. If Safe Boot continues to fail or you have located a suspicious system
>> item you need to remove, start up the Mac while holding Command-S to
>> initiate single-user mode. You’ll see a minimal command-line interface that
>> allows you to move suspicious files to a quarantine folder. If you want to
>> modify files and folders in single-user mode, you have to prepare the system
>> volume.
>> Start by entering /sbin/fsck -fy to verify and repair the startup volume.
>> Repeat this command until you see a message stating that the disk appears to
>> be OK.
>> Only then should you enter /sbin/mount -uw / to mount the startup volume as
>> a read-and-write file system.
>> Once you have made your changes, you can exit single-user mode and continue
>> to start up the system by entering the exit command, or you can shut down
>> the Mac by entering the shutdown -h now command.
>>
>> Cheers,
>> Ronni
>>
>> 17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt"
>> 2.3GHz / 8GB / 750GB @ 7200rpm HD
>>
>> OS X 10.9.4 Mavericks
>> Windows 7 Ultimate (under sufferance)
>>
>> On 28 Jul 2014, at 10:40 am, Jon Davison <jondcamera...@me.com> wrote:
>>
>>> Further to my previous posting.
>>>
>>> I tried starting it in Target Mode from my other iMac and the icon appears
>>> on the desktop, but is displayed as a normal iMac icon, not as the
>>> orange Target Mode icon? I ran Disk Utilities and verified it okay, but
>>> cannot repair it as it says the disk cannot be unmounted?
>>>
>>>
>>>
>>> Hi everyone. Another iMac problem!
>>>
>>> This one starts okay with the grey screen and Apple icon, then goes black.
>>> The cursor is still visible and can move on screen. If I hit any key I
>>> get the 'boing boing' sound, as if it's saying 'wrong input' etc. Startup
>>> does not go past this stage. Any idea what this may be?
>>> 27"iMac/2012/10.9.2/3.2GHz/8GB RAM.
>>>
>>> Kind regards
>>> John
>>>
>>> John W Davison
>>> Photographer/Art Director
>>> Eye in the Sky Productions
>>> 'The Corner Studio'
>>> The Tresillian Centre
>>> 21 Tyrell St
>>> Nedlands
>>> Western Australia
>>> m: 0403 235938
>>> e: j...@eyeinthesky.com.au
>>> Facebook: jondcameraman
>>> w: www.eyeinthesky.com.au
>>> w: www.tresillianartists.org
>>> Member: ISAP
>>> (International Society for Aviation Photographers)
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