Cannot start from disk!!!!!!

Whenever I try to install Mountain lion on my Brand New Macbook Pro 13 inch 2012. It restarts as expected, then it shows all my drives as unable to be used to install because it cannot use any of them as a startup disk. First off, the drive Im using has Lion and it boots just fine, and there is no Time machine backup folder on the root of the drive. I checked using terminal. Now I do have a bootcamp partition with windows 8 on it. I even redownloaded the installer and deleted all of its contents on the disk. It wont work.

I got the disks by clonning, downloading, etc. Since I own all this software, i should be able to legally have it in disk form. And upon formating the Osx partition, it seems to have also deleted the recovery partition, laving the windows in tact. Ya i know, stupid huh. Anywho i got mountain lion back on the mac after following apple's guids on how to remove your harddrive without voiding your warranty. Once done with that, I got my external hdd and dismantled it, then took the tiny usb to sata converter and hooked it to my Imac and installed mountain lion on that. Then put it back into my laptop and BOOM goes the dynomite. Now i have to re-install it to get back my recovery partition back. All in all, what a pain. this should have never happened.

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Navigation Cannot Start from this location. ERROR ...

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BootCamp cannot load from disk code 5

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I burned my disc at 2 speed in Toast. Burned my XP iso like this too, and that worked (not on early 2011 mbp's)
I even deleted the bootcamp partition and resized the osx partition to the max. That way i have a clean partition/install each time i trie. Used partition size is standard (20gb) so that shouldn't be an issue. And the iso i'm using for win7 is being used by al lot of others and they seem to have no problems and claim it to be a bootable disk.
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Unable to start from disk while holding C key.

Hi for some reason I am unable to start boot from disk (Mac OS X install disk) while holding down C key. I've forgot my password and cant log in.
Is there any other way I can reset my password? Or format my hd? or even reset it back to factory setting?
I lost my os x disk so i bought one from ebay instead. could this cause me not able to boot from cd?
Message was edited by: what's going on

If you are using a grey install disk that is not for your model, that indeed may be why you cannot start the machine with the C key held down.
Another reason may be if the MBP has Firmware Password Utility on.
Is this related to the PowerBook you bought on eBay? You don't seem to have much luck there.

IMac dead, grey screen, won't start from disks

I'm sure this is going to go over familiar territory.   We have a housefull of Macs and have had for a long time, and I'm fairly used to hunting down issues. This particular one is a problem I've fortunately not seen before. I suspect a serious hardware problem, but only got a look at it once it was fairly advanced.
My teen son was using this computer, a 21" iMac, I think from 2007 (it was a hand me down from his Mac-savvy Grandma).   He says that it was freezing on him for the last week or two, and he'd have to restart. Then a couple of days ago when he restarted he got a folder icon with a ?, so he took the install discs and reinstalled the OS, which was 10.4.   Yes, at this point he'd already goofed, because he'd gone over his data, and though he had an external HD, he had not used it with Time Machine for several months. I don't know what he was thinking, but he's 16...he probably was not.
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Now things got complicated, because I have been unable to get the computer to start from any install disk I've tried. We have two sets of original install disks from this generation of iMacs (two similar computers), and complete install discs for 10.5 and 10.6, as well as Disk Doctor.   The computer refuses to start up from any of them, with either 'C' or 'D' held down, nor will it start up in Safe Mode. And now the fresh install of 10.4 has disappeared as well.
All that occurs on restart, after the 'bong' is a grey screen. If a disk is in the optical drive, there is a brief sound of it spinning up, then silence for a good while, maybe 2 mins, then the disk is spit out. Nothing more. I have zapped the PRAM or whatever it's called these days, with no change.
We did have an external DVD drive somewhere and I'd like to try that, in case there's a problem with the optical drive itself, but I am thinking this computer may have both disk and hardware issues.
Any advice welcome...thanks in advance!

Hi, sounds like the Hard Drive is dying, & that can prevent booting up.
Hold alt key on bootup, what shows as boot choices?
Have you unplugged all peripherals, cords, & AC power, let sit 30 minutes & try just with AC connected?
If you don't know the model, find the Serial# & use it on one of these sites, but don't post the Serial# here...
http://www.chipmunk.nl/klantenservice/applemodel.html
http://www.appleserialnumberinfo.com/Desktop/index.php
How to find the serial number of your Apple hardware product...
http://support.apple.com/kb/HT1349
Tough without the Install disc, but some things to try...
Does it boot to Single User Mode, CMD+s keys at bootup, if so try...
/sbin/fsck -fy
Repeat until it shows no errors fixed.
(Space between fsck AND -fy important).
Resolve startup issues and perform disk maintenance with Disk Utility and fsck...
http://docs.info.apple.com/article.html?artnum=106214

Cannot start from the system after rescue and recovery

I have T42 and did "restore factory contents." In the process, I use IBM product recovery CD from 1 to 6 and reboot. However it does not start from Windows XP but IBM rescue and recovery with rapid restore. I cannot get out form this although I restart the computer. I appreciate any advice. Thanks.

Hello and welcome,
My memory is a little fuzzy on this, but IIRC some of the older laptops used a 2-step recovery process. You first did the recovery from CD which put the recovery image and restore program on the HD. One the next boot, the restore program starts, and you select to restore your drive from there.
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The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc. The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
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Losing User Accounts on many machines. Cannot boot from Disk. Help!

As many of you know there is a bug going around where the OS “forgets” what user accounts are on the machine. The only user at login is “Other”. This has happened on 10.6.5 and 10.6.6. In the past I have been able to fix this issue by booting from the Snow Leopard disk, change the root password, login using root and re-add the user accounts back under system pref’s. The issue I’m currently having is that two Mac Pros will not boot from disk, external HD, or into single user mode. None of the key commands work at boot up.
The computers do not chime at boot and the apple logo shows up very quickly. I’ve tried resetting PRAM and the logic board. I now have two BRICKED machines and cannot afford to have any more go down.
Any help on this issue would be greatly appreciated!
Thanks

gregfl wrote:
The issue I’m currently having is that two Mac Pros will not boot from disk, external HD, or into single user mode. None of the key commands work at boot up.
I just had a very similar problem this morning on my iMac. Plain white screen on boot-up. No Apple logo. No booting from my SuperDuper clone, no booting from the DVD, no booting into Startup Manager by holding down the option key, no booting even into Apple Hardware Test. I was getting ready to take it in for service.
What finally fixed it was resetting PRAM three times. Hold down command, option, P, and R, and keep them down until you hear the third startup chime. That's what finally breathed life back into my iMac.

Problem with kernel panic message - Cannot boot from disk or usb

Hi Everyone,
I was wondering if someone could help me with a problem I've been trying to tackle for the last few days. I have a 24" iMac 2.33 Ghz Dual Core, with 2 gigs of RAM. A couple of days ago my computer crashed, and when I tried to boot up again I got the infamous grey screen kernel panic message ("You need to restart your computer..."). What's worse is that I get the same message when I try booting from my external drive and the installation disk itself.
I've basically planned on formatting since it's been a while anyway, but since I can't boot from my external drive or the installation disk that came with my computer these are not options at the moment. I can only get into the computer via safe mode. I've used disk utility to verify the disk, and it comes up with no errors. Anyways, I'd really appreciate if anyone had any advice on this. I've scoured the internet for advice about kernel panic messages, and they all suggest booting from disk or external drive etc., which is not a possibility for me right now.
Thanks

If you get a panic when trying to boot from the installation disc, and the disc is not scratched or dirty, then you have a hardware fault.
Make a "Genius" appointment at an Apple Store to have the machine tested.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to bare metal from any of them.) Don’t erase the recovery partition, if present.
*An SSD doesn't need to be zeroed.
There are several ways to back up a Mac that is unable to fully boot. You need an external hard drive to hold the backup data.
1. Boot into Recovery (command-R at startup) or from a local Time Machine backup volume (option key at startup.) Launch Disk Utility and follow the instructions in the support article linked below, under “Instructions for backing up to an external hard disk via Disk Utility.”
How to back up and restore your files
2. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode by holding down the key combination command-T at the startup chime. Connect the two Macs with a FireWire or Thunderbolt cable. The internal drive of the machine running in target mode will mount as an external drive on the other machine. Copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
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Cannot start from install disk

We have a multi mac household and I'm pretty sure (but not positive) the 10.5.4 install disk belongs to this computer (MacBook Pro). I really need to use Disk Tools but when I try to start with the DVD I grinds for a couple minutes then just sits there with a gray screen (no apple logo). I've tried:
Inserting the disk normally, clicking on install and clicking the restart button as required.
Holding down the "c" while starting
Holding down option while starting
Holding down "d" while starting (for hardware test)
Zapping the PRAM
Changing the startup volume in the settings
..but I always get the same result as above. I have to hold down the power button to get it to shut down, then restart with the trackpad depressed to get the disk out.
Questions:
1) Does anyone have another idea I should try here?
2) Is the gray screen I'm seeing a symptom of trying to start with the wrong system disk?
3) How does one know if the install disk is the right one for the machine?
Many thanks!!!

While the media issues get sorted out, I can offer a workaround to completing the disk repairs, sans Install DVD (BTW, that's why the latter day media came only one to the box; they rolled everything together into a single dual-layer DVD). Normal disk repairs require booting from alternate media because the OS is doing multitasking, that is, accessing the boot media thru various concurrent processes. If multitasking is disabled, the issue disappears.
So, since you're in the Leopard world, I offer two choices. Best would be you download and install the latest release of the AppleJack utility ( http://applejack.sourceforge.net/ ), this is the premier power-user disk repair utility, which we Lion users miss dearly. AJ comes with a quick and easy installer that simplifies the process of getting it ready. Else you will have to do some command-line stuff by hand.
How to proceed; get this down somewhere, cause the Mac won't be usable till you finish. Restart the Mac and hold down the Option Command S keys. This gets you into Single User mode. No graphics interface here and all commands have to be typed on the screen, just like Grampa did back in the dawn of the Computer Age. After the # prompt appears and if you previously installed AppleJack, just type applejack and the return key; follow onscreen instructions, at least do steps 1, 2 & 4. If #1 shows any errors, redo until it comes out clean. When finished, return to quit and restart as indicated by the AppleJack prompt.
If you did not install AppleJack, type the following command exactly as written, followed by the return key: fsck -fy Wait until the # prompt reappears (may take awhile), repeat if any errors are indicated, then type reboot and the return key to restart the Mac. Not as thorough as AppleJack, but this will fix your HDD.
There, you will have now gone deep into the belly of the Unix beast running on your Mac. This is the non-graphics, non-fancy version of Disk Utility, just like computers were done before graphical GUIs.Since only a single process (fsck) runs in Single User mode, it is able to fix the disk without the multitasking issues. Of course, if you can't get a clean and error-free fsck run, the HDD has problems it can't fix (just like it may happen with DU) and you will need more help. BTW, fsck is the Unix geekcode for File System ChecK.

MacBook frozen on logo screen! Won't start from disk or boot into safe mode

My MacBook was abnomally sluggish this morning. It froze several times as I checked my Mail, then I clicked 'Get Info' on an Application, and Finder restarted itself. I had to shut it down manually (hold down button.)
When I turned it back on it wouldn't start past the logo and spinning gear. I called Apple, he had me try Shift startup (Safe Mode, didn't work) and C startup (boot from install disk, my Mac spit the disk out).
I was wondering if there is anything else I can try. I don't feel like driving 40 minutes to my 'local' Apple Authorized Service Provider, but I need my laptop.
Details:
Late '06
Black MacBook2,1
2GHz Intel Core 2 Duo
4GB RAM
Leopard 10.5.7
Message was edited by: Cory James22

<rant>
I wasn't given an option to increase my hard drive size, as I took it in to a "local" AASP. They keep telling me Apple is slow shipping out a new HD, but with my experiences Apple always FedExs a repair order very quickly. If I had known it was the d* hard drive I would have had the thing up and running 2 weeks ago.
I plan on contacting Apple and letting them know that their AASP is giving them a bad name. I know that Apple is not the problem here, but other people who take their Mac in to these bozos will believe Apple is at fault for their slow service.
</rant>

MBP won't start from Disk Warrior CD and now won't restart at all.

I tried starting my MBP from DW CD and I keep getting screen with Terminal type font and a message that says I need to restart my computer. When I restart I get the same screen over and over. (Now typing on iPhone so bare with me!)

What you will need to do is restore your OS.
http://support.apple.com/kb/PH11273
Follow the instructions on this page. If you need someone to help you walk through it just let me know. This process will bypass your computer trying to boot on the Operating System and will boot on a recovery partition. And from here you can try to see whats going on. You might try and go through disk utility and verify disk and see if it can locate the problem. If there is click repair and hopefully it will do the trick.
Hope this helps!
-Steven

Cannot boot from Disk Warrior 4.0

Is any one having this problem ? When I try to boot from the Disk Warrior disk it just goes to the apple icon then restarts. I must have tries for 20 min holding the "c" key watching my system restart over and over again never mounting the disk. It has been totally unsuccessful using DW 4.0. Its a bummer because I am a fan of this product.

-mio- wrote:
DW dose not boot with the new intel macs!
As you noted you cannot boot an intel Mac from DW 4. Disk Warrior 4.1.1 is the intel version and now boots a version of Leopard from the DVD (the previous version booted into Tiger). If you can't get it to boot using the keyboard at startup try going to System Preferences - Startup Disk and setting to boot from the DVD and restart. If your Mac still refuses to boot from the DVD then as others have already indicated you may have a hardware problem.
Have a look at the Disk Warrior Support Page to get the free update to 4.1.1
http://www.alsoft.com/DiskWarrior/support.html
Message was edited by: Noiseboy2006

Cannot startup from disk

I have a disk error on my HD, but I cannot get the machine to startup from the Tiger Install disk or the Techtool Deluxe disk. I have tried (repeatedly...) holding the 'C' key down on startup, but no luck. I went to the Genius Bar today, and the technician helped my fix another problem, and told me that on intel Macs, you have to hold down the 'D' key. Still no luck.
Am I doing something wrong, or do I have another problem?

The D key is held if you want to run hardware test from the DVD. You hold down the C key to boot from the DVD drive. Try booting and holding down the opton key. This will let you see what all drives are bootable. It should show the DVD drive as a boot option with the install disk in.

IMac won't start from disk.

my son shut down my Mac while it was installing software. When I start up I get a circle with a line through it. Now it won't start up from disc.

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New hard drive, trouble starting from disk

I just installed a replacement hard drive. Now when I hold "option" on startup and choose "install disk" (that is the ONLY option), nothing happens... just the apple and spinning flower circle...

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