How can I start from install disc without shutting down Mac?

Sorry. that last post wasn't so clear. I started the computer without a password, but I think when I was trying to set my own password I may
have re-activated the old one.
I'm afraid that if I shut it down I won't be able to restart it?- (for starting over from install discs)
What Have I Done?
This is a hard one. Can anyone help?

Put the disk inside the slot.
Hit the restart button.
Hold down the c key as your computer is booting.

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On start up, says had problem shutting down mac book pro mavericks

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Welcome to Apple Discussions!
I am wondering if your hard drive is failing? You might try downloading and running SMART Utility on it:
http://www.apple.com/downloads/macosx/systemdiskutilities/smartutility.html
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Can't boot from install disc after new RAM & SSD install

I decided to breathe some new life in to my 2007 2.2GHz MacBook by:
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-replace the HDD with a SSD (Samsung 840 Pro-Series MZ-7PD128BW 128GB SATA 6.0Gb/s 2.5" Internal Solid State Hard Drive).
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What I've already done:
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2. Using the install disc/Disc Utility, I erased my old hard drive completely (Hope that wasn't a huge mistake!)
3. Replaced the previous 2gb (1x1gb) with the new 2x2gb RAM sticks
4. Swapped out the HDD with the SSD
When I went to boot the machine, all I get is a black screen. I can hear the optical drive spin for a while, then stop. Screen remains completely black. I have tried using C while starting as well as Control - same result. So, I put the old (erased) HDD back in and again got the same result. I didn't have time to put the old RAM back in and try again before work this morning and intend to tonight. Based on that, maybe my RAM isn't compatible even though the specs look to be...? But, does anyone know if the components I am using are not compatible? or did I totally screw up by erasing the old Drive prior to confirming this would work? Am I missing something else?
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I was finally able to get it done using my old RAM, so that must be the weak link. I'm going to try to return the RAM I bought and try a different brand. Thanks For the response!

Can't Boot From Install Disc 1 ?

Holding down "C" at Start Up isn't working.
Most of the time I can't get Preferences > Start-Up to even "see" my Disc 1.
When I can get it to show up in Start-Up, and Select it, and Lock it ... it Still Won't Start Up from the Install Disc 1 ... and in fact usually ejects the disc.
Sometimes when I re-push in the disc, I get the message that a Blank Disc has been detected, "what do you want to do with it."
But, it shows up in Disc Utility, and when I run Verify Disc, it all looks good?!
The Disc has Mac OS version 10.4.8 on it. I'm running 10.5.7. I'm all up to date with my software.
Yesterday I ran the latest version of Disc Warrior. When I run TechTools 4.0 it seems to get stuck running Files. When I run Repair Permissions from Disc Utilities, it shows a fairly massive amount of issues. Running it over and over again doesn't seem to make any difference.
I WANT to run my Install Disc so I can run Repair Disc from Disc Utility ... because I'm having a number of issues ... and I seem to get the spinning rainbow a lot.
SUGGESTIONS ?! ... thanks ...

Disk Utility that can repair a 10.5.7 permissions is only found on the Leopard installer disc. Tiger can't repair Leopard when it comes to permissions, and may also have difficulty with the directory.
Secondly, if your MacBook Pro was purchased after October 26, 2007, it can't boot from any Tiger disc.
If your MacBook Pro was purchased prior, you can use the disk, but you'll want to follow these directions for hardware diagnostics:
http://docs.info.apple.com/article.html?artnum=303081
Only if your MacBook Pro has Tiger installed, should you use Tiger for the directory or permissions*:
http://www.macmaps.com/directoryfaq.html
Macs can only boot from the operating system that shipped with them, and newer retail operating systems. This means:
1. pre-October 1st, 2007 MacBook Pros can boot off:
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- - retail 10.5 discs which look like * that do not say Upgrade, DropIn, or OEM.
2. October 1st through October 25, 2007 can do #1, and also use Upgrade and DropIn discs. Those disks were offered as a limited time mail order Up to date program, some were dropped in the box that came with them.
3. October 26th through November 14, 2007 can boot off the discs that came with them, and retail 10.5.1, 10.5.4, and 10.5.6 discs that do not say Upgrade, DropIn, or OEM, and have a label like the image above.
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5. June 30, 2008 through December 14, 2008 can boot off the discs that came with them, and the retail 10.5.6 discs that do not say Upgrade, DropIn, or OEM, and have a label like the image above.
6. December 15, 2008 and later MacBook Pros can only boot off the discs that came with them.
Presumably when Snow Leopard comes out in September, all of the above will be able to use Snow Leopard because of the specs on http://www.apple.com/macosx/specs.html
- * Links to my pages may give me compensation.
Message was edited by: a brody

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Yesterday, my hard drive died (disk warrior informed me, that HD had irrecoverable errors, and my iMac would shut down unless it was booted from the Disk Warriorr disc).
Today, I have a new internal HD professionally installed. And when I brought it home, and installed Snow I got an error at the end of the installation "OS could not be installed, restart or choose start up disk" or something to that effect. However, on licking OK I got the snow music, and welcome movie nd eerything seemed to be working fine.
I can log in normally and have get to my desktop, but on trying to boot from the Snow Leopard disk (10.6), I get to the gray screen with the apple logo and hang. I have tried resetting Pram/firmware and also ran the fdisk command (twice).
It seems too much of a concidence that my hard drive and now my disc drive would die all in span of two days? I can hear the disc noise, but as I mentioned I cant get beyond the gray screen on trying to boot from the disc.
Suggestions?
Late Nov '07 intel iMac. And I did update the OS to 10.6.4. Install disc is 10.4.

Return it to the repair station.

Can't boot from Install Disc while trying to isntall a new hard drive...

So last week my macbook 4 froze. I powered it down and when restarting, got the grey screen and apple logo and spinning wheel underneath. After about 3 minutes the machine would just shut off.
I ran the AHT and got this error: 4hdd/11/40000004: SATA(0,0)
Searched around for a bit and the internet's consensus was that my hard drive has failed. I bought a new one today and can't seem to get up and running again.
With the new drive in and the Install Disc in, regular start up get's me the blinking folder.
Starting while pressing C, while pressing D, while doing any other combination just gets me the grey blinking folder with question mark.
When I start with OPTION key, I can see the boot from CD option but after selecting, I just get a plain grey screen. Not really sure where to go from here? Any advice is appreciated.
Thanks

Perhaps the setting on the replacement hard disk drive is not correct
for the computer configuration you are using it in. There are such items
as jumper-pin settings: Master, Slave, auto-detect; and so on.
If the hard disk drive and the optical drive have a similar setting, neither
one could be in a position to do much.
Since I am unfamiliar with the correct settings for your computer, perhaps
someone who has more information and/or experience will reply to this.
Good luck & happy computing!

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Two days ago my 2008 Mac Pro got a green screen that froze up the entire system. After a few minutes I decided to force power down by holding the power button. Since then I receive a kernel panic every time I boot up in Mac OS.
I run bootcamp and I'm able to boot up Vista 32 bit okay. After the system went down my video card, NVidia 8800GT, was no longer being loaded in Windows due to and error (43). I tried installing old drivers, new drivers, and today I finally bought a new video card, NVidia GTX 285 Mac. The new card works great in Windows, but I'm still unable to load up Mac OS.
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Your OS X system sounds hosed. However, getting a kernel panic trying to start from an installer disc is usually a good sign of hardware failure. If you aren't using the original installer disc that came with the computer, then that could be a problem - wrong version for the machine. Or the installer disc itself is defective.
If your Boot Camp partition is on a different drive, then I'd suspect the hard drive but you believe it's OK. This could be a problem with RAM. However, I would look for another suitable installer disc you can try that boots the same version of OS X that was installed originally on your machine.

Just replaced my hard drive. Can't boot from install disc.

Hello all. I just bought a powerbook (1ghz) from a person I work with. The hard drive was not working and she did not want it anymore. I paid her for the computer and bought a new hard drive. With the new hard drive installed, I can not get it to read from the combo drive. I kept trying to boot to the install disc and it kept ejecting the dvd. Then I tried to boot to the hardware test.....still no luck. Then the combo drive started making a very loud noise and now it is not spinning and will not eject my disc. Any thoughts?
thanks in advance.
PowerBook G4 12" 1ghz

As a first step, I would have triple checked all the connections from the optical drive inside the powerbook.. but it's not unheard of for the drives to just die.
You can install MacOS X onto the system via an external firewire DVD drive (Firewire only, not USB2.0), or you can put the system into Firewire Target Disk Mode (hold down T as soon as you hear the startup sound), plug it into another Mac, and run the installer on that system, or you can buy a new DVD drive (such as the Pioneer K06 for around $100, or have a look in the drive compatibility database at xlr8yourmac.com).
I hope you got the Powerbook for a good price...

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FingerPrint turns any printer into an AirPrint printer
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Can't boot from install disc

I have my new Mac Pro setup so now I turn my attention to my old one (1.1). I wanted to reformat by boot drive and do a clean install of Snow Leopard. So, I pulled out my install disc that came with the MP and restart with the "C" held. It acts like it is going to work and then my grey screen turns a shade darker and I get the following message in about 3 or 4 different languages. "Your system must be restarted. Hold down the power key for several seconds." Essentially I was wanting to run Disk Utility to reformat the drive and then install Snow Leopard. Any ideas? Thanks

I punted. Had a newer HD sitting on the desk so I reformatted that one and switched it with my boot drive. Held down C with Snow Leopard in and the installation has started. Still can't figure out why I could not boot to my original install disc though.

Can't Start from Install disk or external Hard Drive

I've installed an operating system on a external WD 120Gb hard drive. I am unable to start up from the WD Hard Drive or the Snow Leopard install disk, either by selection them from the Startup disk or by pressing 'OPTION' at startup. Every time one of these is selected, the computer starts from the MacBook internal hard Drive.
I have installed the operating system on an Iomega 1 Tb external and it doesn't show up on the Startup disk or when I start using the option key.
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I have a 500Gb Iomega I am using for my TIme Machine.
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HT4356 How can i print from my iPad without any wireless network?

I develope bids on my iPad out in the field (where a wireless network is hard to find) and I need to print it from my truck to deliver to my customers.

iOS AirPrint Printers http://support.apple.com/kb/HT4356
How to Print from Your iPad: Summary of Printer and Printing Options
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http://ipadhelp.com/ipad-help/print-from-ipad-iphone-without-airprint/
How to Enable AirPrint on a Mac and Use Any Printer
http://ipadhelp.com/ipad-help/how-to-use-airprint-with-any-printer/
iPad Power: How to Print
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Print Agent Pro for iPad ($5.99) http://itunes.apple.com/us/app/print-agent-pro-for-ipad/id421782942?mt=8 Print Agent Pro can print to many non-AirPrint and non-wireless printers on your network, even if they are only connected to a Mac or PC via USB.
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http://reviews.cnet.com/8301-19512_7-57368414-233/fingerprint-turns-any-printer- into-an-airprint-printer/
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How can I start up my macbook without using the power button ?

Hi guys,
I think my macbook's keyboard/trackpad/power have died. I was wondering if there's anyway to start up my macbook without the power button, I was thinking about an external keyboard that would hae a power button on it, I don't know ...
I have not used my Macbook for the past 4 days and i think it's making me sick ...
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hey,
So i bought a G3 keyboard with the power button and i just received it but my macbook still doesn't want to start up.
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How can I start from install disc without shutting down Mac?

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