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Daniel
Daniel, Mac Genius
Category: Mac
Satisfied Customers: 4750
Experience:  Apple certified on desktop and portable, help desk qualified. Have owned and used Macs since 1989.
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my imac is saying start up disc is full and I have lost the

Resolved Question:

my imac is saying start up disc is full and I have lost the dock completely can you please advise
Submitted: 3 years ago.
Category: Mac
Expert:  Daniel replied 3 years ago.
Hello, my name is Dan.
I will do my best to help you, the only stupid question is the unasked one.
I think I can help with this. It isn't as big a deal as it looks.
Your friend is right in booting from the disk but a new installation of the operating system is probably not necessary.
To boot from the installation disc and the Mac is on then start at step #1.

If your Mac is off or will not boot from the hard drive then goto step #3.

1. Insert disc #1, it can be the original that came with your Mac or it can be a retail version newer than the original that came with the Mac.

2. If the disc opens then click on the Install OS X icon, if it does not automatically open then double click the disk icon on the desk top and then click Install OS X.
Your Mac will restart using the install disk.

3. If your Mac is on but will not boot up then insert the installation disk and turn it off by pressing and holding the power until it shuts down.
Now press the power to start it and hold the 'Option' key until the startup manager appears.
If your Mac is off then press the power to start it up, immediately press and hold the 'Option' key for the startup manager.
Insert the disc and click the circle with the arrow to refresh and then select the installation disc to boot from.

Once your Mac is booted from the installation disk the next step is to open Disk Utility.
Click continue at the Language screen, the next screen will be the Welcome to OS X.
At the very top of the screen will be a menubar with 'Utilities', from that drop-down menu select 'Disk Utility'.
There will be a list of hard drives and optical drives on the left of the window, if your drive is in that list then click on it once to highlight.
Now click on the First Aid tab, at the bottom of the Disk Utility window you will see a button called Repair Disk.
Select that by clicking on it. It will either return that everything is okay or that some things were wrong and they were repaired or it found something wrong and it can do nothing about it.
graphic
If everything checks out okay or if it does the repairs you then want to repair the permissions.
There will be a button close to the list of drives that says Repair Permissions. Click that to selected and give it time.
There may be a long list of permissions that repairs or there may be only a few.
There will also be some that say SUID that will not be repaired if you have 10.5 or above.
Once you have completed this then you can quit Disk Utility and the installer.
Do Not Install Anything.
Simply restart your machine by selecting it from the menu bar.
graphic

Your iMac has a wireless keyboard and that makes a little more difficult, not impossible.
If you happen to have a USB keyboard of any kind you would be best to use it. If it happens to be a Windows keyboard then substitute control for command.
Read the above over carefully before doing anything and if something isn't clear please ask me.
What this will do is help put things back the way they should be.
Customer: replied 3 years ago.
Dan not sure if my mac is booting up - the dock is not appearing just getting blue screen with apple icon at the top with safari edit view history bookmarks window help headings at top of screen only. is that classed as booting up? I would have thought not, as you are not able to access all aplications - just safari. so my thought was to go to 3. immediately is this correct ? please advise - Thanks Dan
Expert:  Daniel replied 3 years ago.
What keyboard are you using?
Customer: replied 3 years ago.
wireless keyboard Thanks
Expert:  Daniel replied 3 years ago.
In that case, the timing is very critical. You have to press the keys as the startup sound is happening. Before or after probably will do nothing.
Daniel, Mac Genius
Category: Mac
Satisfied Customers: 4750
Experience: Apple certified on desktop and portable, help desk qualified. Have owned and used Macs since 1989.
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