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My computer freezes when starting up- Mac G4 933 Mz, will not start up using disc & holding down 'C" key

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First, Try using Disk Utility to do a Disk Repair, as shown in this link, while booted up on your install disk.
You could have some directory corruption. Let us know what errors Disk Utility reports and if DU was able to repair them.
But it sounds like the following;
You are experiencing a Kernel Panic as seen and described in Apple doc.#106227. If not, disregard.
FJ has some good KP tips.
Here's the most used site for Resolving Kernel Panics. Please do all the steps in order, even if you don't think you need to do a certain step.
Do the Disk Repair first; that may do it! (let's Hope!)

Posted on Jul 23, 2008

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Posted on Jan 02, 2017

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How do i shut mac off then put start up disk in ?


Simple. Load the Apple System start-up disc first while the computer is running. You should see its icon on on the screen. Then select restart from the Apple Menu on the top left of the screen. Hold down the C key as it reboots. You will now boot into the start-up disc. This method also applies to Disc Warrior and other tools. Alternately, with the computer already running, insert the Apple System start-up disc then go to System Preferences also under the Apple menu, Under the start-up disc icon, select your apple system icon and restart.
Third alternative. With the computer running insert Apple System start-up disc. Restart the computer. Before the chime, press and hold the option key, left-hand bottom side of the keyboard to the left of the Apple (Command) key. You will see your system HD icon and the screen as well as your Apple System disc. Click on the System Disc and that will boot the machine.

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When I start up my MacBook freezes,I am a new user.I have not done anything different than usual what do I do


Check for updates if possible from mac, but if you cant do anything try the following...if you have done nothing new to the computer and this problem started to happen... best thing to do is reinstall the system. if you have the instal discs, please do a full clean install. insert disc... power on and hold down the "C" key .. the installation process should beging. if nothing happens... time to take it to an apple store!!!! good luck

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Ejecting a Stuck CD in Mac OSX


  • First try the normal methods to remove the disc. Drag its icon to the Trash can in the Dock or select 'Eject' from the File menu.
  • If you are running a virtual machine, e.g. VMFusion, ensure that the CD is disconnected from the virtual machine. This will sometimes allow the CD to now show up in Mac OS X.
  • Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared.
  • If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar.
  • Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder
  • Open Disk Utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button.
  • Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism.
  • Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray.
  • Restart the computer while holding down Command-Option-O-F, to enter the Open Firmware prompt. Type "eject cd" without the quotes, and press return. The disk ought to eject. To start into OS X, type "mac-boot" without the quotes. Press return, and the computer will continue with the startup. (This will not work on an Intel Mac. There is no Open Firmware on Intel Macs. )
  • If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.

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CD Stuck in Device
First try the normal methods to remove the disc. Drag its icon to the Trash can in the Dock or select 'Eject' from the File menu. If you are running a virtual machine, e.g. VMFusion, ensure that the CD is disconnected from the virtual machine. This will sometimes allow the CD to now show up in Mac OS X. Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared. If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar. Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder Open Disk Utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button. Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism. Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray. Restart the computer while holding down Command-Option-O-F, to enter the Open Firmware prompt. Type "eject cd" without the quotes, and press return. The disk ought to eject. To start into OS X, type "mac-boot" without the quotes. Press return, and the computer will continue with the startup. (This will not work on an Intel Mac. There is no Open Firmware on Intel Macs. ) If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.

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1 Answer

I can't eject a dvd from my mac pro desktop


Try these tips.....usually holding down the touchpad buttton while tapping the eject button during bootup works.

picexporterror Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared.
picexporterror If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar.
picexporterror Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder
picexporterror Open Disk Utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button.
picexporterror Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism.
picexporterror Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray.
picexporterror Restart the computer while holding down Command-Option-O-F, to enter the Open Firmware prompt. Type "eject cd" without the quotes, and press return. The disk ought to eject. To start into OS X, type "mac-boot" without the quotes. Press return, and the computer will continue with the startup. (This will not work on an Intel Mac. There is no Open Firmware on Intel Macs. )
picexporterror If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.

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CD Stuck in Device
First try the normal methods to remove the disc. Drag its icon to the Trash can in the Dock or select 'Eject' from the File menu. If you are running a virtual machine, e.g. VMFusion, ensure that the CD is disconnected from the virtual machine. This will sometimes allow the CD to now show up in Mac OS X. Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared. If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar. Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder Open Disk Utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button. Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism. Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray. Restart the computer while holding down Command-Option-O-F, to enter the Open Firmware prompt. Type "eject cd" without the quotes, and press return. The disk ought to eject. To start into OS X, type "mac-boot" without the quotes. Press return, and the computer will continue with the startup. (This will not work on an Intel Mac. There is no Open Firmware on Intel Macs. ) If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.

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1 Answer

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A CD or DVD disc can become stuck in your Macintosh. It may not be appearing on your desktop or could be causing the computer to lock up if the computer cannot recognize it properly.
[edit] Solutions
  • First try the normal methods to remove the disc. Drag its icon to the Trash can in the Dock or select 'Eject' from the File menu.
  • If you are running a virtual machine, e.g. VMFusion, ensure that the CD is disconnected from the virtual machine. This will sometimes allow the CD to now show up in Mac OS X.
  • Shut down the computer and start up whilst holding down the mouse button. This may take some time, but keep your finger on the mouse button right up until the disc comes out or the log-in screen has appeared.
  • If you have Toast Titanium installed on your computer, choose EJECT DISC from the menubar.
  • Sometimes you can successfully use the eject disc button in iTunes even if the disc is not visible to the Finder
  • Open Disk Utility and choose the disc you wish to eject in the left-hand pane, then click on the Eject button.
  • Some Macintoshes have a paperclip hole that you can insert a straightened paperclip into, manually triggering the eject mechanism.
  • Open Terminal and type "drutil tray eject" to eject the disc/tray, and "drutil tray close" to close the tray.
  • Restart the computer while holding down Command-Option-O-F, to enter the Open Firmware prompt. Type "eject cd" without the quotes, and press return. The disk ought to eject. To start into OS X, type "mac-boot" without the quotes. Press return, and the computer will continue with the startup. (This will not work on an Intel Mac. There is no Open Firmware on Intel Macs. )
  • If your computer has an eject button on the keyboard, restart the computer holding down the Option key. When the startup disk selection screen appears, let go of the option key and press the keyboard's eject button.

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I hope this helps.
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