Cant boot in Mac anymore

hey guys
just installed bootcamp on my mac an it all worked pretty fine.
no i wanted to restart my mac in the mac mode.
i restart the mac and while starting up i hold the option key as described.
but what i get is just a grey screen with a field where i have to enter a password.
does anyone of you know what kind of password is requested? i tried administrator password but this does not work...
does anybody have a suggestion
greetings

Power down and boot while holding down the command-r keys into the ML recovery disk. Select Disk Utility and run Repair Disk.

Similar Messages

I CANT BOOT MY MAC! D:

Last night i added 2GB of ram to my 2006 first macbook, booted osx10.4 and it worked, ned i booted the mac holding down ALT to get to the boot menue so i could boot from CD so i could install 10.6.3 from a retail disk. (I don't know if it helps but i used a external usb cd drive and the once in the mac is broken).
It got about 10% through in the installation then it failed but i passed the part were i had to format my HDD. So obviously i couldent boot the old osx any more but when i next booted it up, if i held C to boot from cd it crashed and if i held alt to acsess the boot menue i would get a black mouse cursor i could move then a blanc screens so ic could do nothing with it. i f it helps since i have a retail osx disk, would t help if i booted of usb (btw, when i presses nothign and tried to boot it showed a grey logo with a question mark in it and it cant find a boot partition) what is the best way to fix this as i cant boot!
plz help

Boot your Mac while holding down the Alt/Option-key until the Boot Selection screen is shown.
Choose your OSX to boot from.
Once in OSX go to System Preferences - Startup Volume and set your OSX to be the default.
Use Disk Utility in OSX to verify disk and repair permission.
Stefan

I can boot into bootcamp,but cant boot to MAC OS.

I tried disk utility, and I cant mount my mac hdd and when i run hardware test it says perfectly fine. What do I do ?
When I try to login into Mac grey progress bar appears and than computer shuts down on its own.
Please give me solution.
Please help.

flavinator wrote:Update: So, I'm a little lost. I got all the packages installed. I edited the xinit file the way it says to. I chmod it.
Why did you chmod it? This is not in the instructions.
flavinator wrote:When I startx though, X has no file or directory, and don't see where it says how to create one.
What does this mean? Is this some translation or interpretation of an error message? Post the *actual* output.
flavinator wrote:I thought it would do that when XDM installed.
XDM is also not part of the instructions for testing TWM. If you start doing random other steps, we will not be able to help you as we will not understand what state your machine is in.
flavinator wrote:Update 2: I got startx to run, but then it fails with "Using system config directory "/usr/share/X11/xorg.conf.d" 0x00c00000, type = 1) Invalid argument (22) (II) Server terminated successfully"
Please post the *full* output. The server terminated successfully suggests a problem with your xinitrc, so as ewaller requested, we'll need to see that - after you provided the actual output and error messages you are getting.

Latest Software update has shut down my mac - cant boot it up anymore

can anybody shed any light on this issue - i have just (stupidly) run the latest software update (about an hour ago) and now my macbook pro wont boot past the grey screen, it restarted the 1st time but no softwarew would work- then i restarted and now it wont get past the greay screen with the apple on and spinning wheel- ive tried booting of the install cd (it just spits out the cd)- safe booting, reseting the pram -and am now considering throwing it out of the window as i have deadline and have run out of idea's - it may have got dangerously low on disk space around the update - but it looked like it had at least a gig on it can anyone PLEASE help....

Hi exit23, and a warm welcome to the forums!
Unfortunately I've read of this happening before, it's usually Disk or OS corruption that leads to it.
And iGB free space is nothing these days, definitely dangerous territory, less the 10 GB is really slowing OSX down to a crawl.
Apparently you don't have a bootable backup!?
"Try Disk Utility
1. Insert the Mac OS X Tiger Install disc that came with your computer, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
5. Select your Mac OS X volume.
6. Click Repair. Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)
But you'll likely have to clear some space ASAP.
Do you have another Mac and both with Firewire?

I can't boot my Mac anymore

That's pretty much the problem.
You see, it's an iMac from the Late 2007 If I'm not mistaken. It's pretty much the third time I've had to renstall the whole software, the first time for unknown reasons and the second because everything within was deleted, out of the blue.
This time around, I'm told (by family at home) that the computer froze, and they used the safest method to turn it off, a.k.a. Press the power button for several second until it turned off. Ever since it didn't boot anymore.
I press the power button and THE flashing folder with a question mark pops up after some seconds, and that's pretty much all I can do. I've tried booth in Safe Mode (with Shift), booting in Recovery HD (Command-R) and even tried Startup Manager (Option key), but i only get a floating cursor and nothing else happens. Literally nothing else happens.
I thought it was the HDD Finally crashing, so I left it alone for some time, and incredibly the next time I tried it booted perfectly. As if nothing had happened. But it froze again, we had to power it down as mentioned above and this is my third day trying. No success except for that bit of magic.
Now, the Mac doesn't really have any important information anymore, and I don't have a Time Machine backup either, but it'd be nice if my files didn't erase this time around. To be honest it sounds like the HDD finally died, but again, it booted normally after one night, sadly not anymore. I personally have my suspicions on the cable, but I'm not the expert.
Any help? Thank you in advance!

Startup Issues - Resolve
Startup Issues - Resolve (2)
Startup Issues - Resolve (3)

I have installed windows on the new NTFS partician and cant boot it back to mac

I have installed windows on the new NTFS partician and cant boot it back to mac. I dont think I loaded the bootcamp for windows properly now it is stuck in Windows with no bootcamp icon

Restart Windows, hold down the option key.
If you have a valid OSX install, the drive should appear. Choose the OSX partition and continue.

Macbook Pro 17 cannot boot into Mac OS anymore after making partition on windows

My Mac is a Macbook Pro 17", I got it from my friend (no original disc).
So after upgrading it to Mavericks (I was unable to install Windows using Boot camp of 10.6.8), Boot Camp successfully let me install Windows 7 Professional (x64).
The problem is that, I shrink the Boot Camp partition, and create another NTFS partition (so I can store data in the second partition as I usually do when using Windows). Now, I cannot boot into Mac OS anymore. Holding Command + Option + R does nothing, holding Option while startup shows a hard drive named Windows (instead of Mac HD). And no Recovery HD too

shakhriyor,
you’re going to need to purchase a replacement pair of the original grey installation DVDs for your MacBook Pro from Apple to be able to fix this problem.

Took away the access rights for harddrive - mac os x cant boot! pleasehelp!

i took away the access rights for harddrive - mac os x cant boot! pleasehelp!
thank you for any help

wow! thank u a lot!!! it worked great!
i did this:
A1. If the disk in question is your Mac OS X startup disk and your computer stops starting up at the blue screen, restart with the Command and S keys held down, and enter the following commands:
mount -uw /
chown root /
chmod 1775 /
exit

Cant boot G4 tower

hi
ive been running a G4 tower 800mhz at work from an external lacie firewire drive with the latest tiger without any trouble so far.
however, since i took that drive home and connected it to my cube there to transfer some files, i cant boot from it any more.
the drive is completely fine and all my files are ok. just since i reconnected it at work, it doesnt boot anymore
it gets stuck at a standard blue apple desktop background.
ive done most of the things i could think of, including:
- removing any startup items
- single-user mode with some codes to reset vram etc
- verbose mode doesnt give suspicious messages
- verifying the disk using disk utility doesnt give errors
- no third-party ram
any help? what can i do to make my disk bootable again?
any ideas why it became unbootable just by connecting it to another mac for like an hour or so?
thanks a lot for suggestions
maarten

no i didnt boot the cube from the external firewire drive. just connected it. went into my home folder on there, copied the files over, and disconnected it again
didnt do anything more with it
archive and install. sure a solution, but quite a pain. id prefer to find out whats wrong. i thought it might have to do something with permissions, but i repaired those and it didnt change anything. still stuck on startup....
maarten

Need to boot broken Mac-Mini using retail Snow Leopard 10.6 DVD

Hi,
In Summary:
==========
I have Mac Mini (late 2009) which does not boot anymore and I need to install Snow Leopard using retail DVD (version 10.6). The OS/installer from the DVD does not seem to boot either. I always very much appreciate the efforts of true geeks. So please, any casual beginner, please do not demoralize with something like "cannot be done" etc.
The complete story:
==================
The start of the problem:
1. All of a sudden, one fine day, on start up, my Mac Mini strated to shut itself down without no apparent reason to me. When trying to boot, it would show a progress bar for about 5 minutes - I am assuming that was disk-consistency check being performed. My best guess is that right after the use of Carbon-Copy Cloner (but I am not 100% sure) it all strated to happen.
2. Performed Mac's Disk-Util check and [Verify Volume] used to display "invalid directory item count, should be 31 instead of 29". Surface scan said disk hardware is 100% fine. Volume Repair never worked, since OS X was installed on the primary disk. I lost the DVDs that came with this Mac Mini, so the option to boot from that DVD and launch Disk Util etc. was not possible.
TechTool Pro - No Help:
3. Started googling and had to choose between [TechTool Pro] and [Disk Warrior], opted for TechTool Pro. Tried its bootable DVD only to learn that TechTool Pro cannot fix it. Again, it's surface scan suggested disk hardware is 100% fine. Sent the details to TechTool Pro support team, they couldn't help either after a couple of e-mails+data exchange. (How do I claim my lost money with TechTool Pro - suggestions appreciated as well).
Googling / Mac Forums:
4. Started looking into forums, learnt that someone had successfully repaired this problem using Ubuntu 11.04 install DVD (i.e., without installing the Ubuntu, but just using its 'try from DVD' feature). I had that handy, but forgot to disable HFS+ journaling before attempting to fix the problem. Anyway, attempting volume repair that way couldn't fix the problem as well. However this step took away my ability to boot from Mac.
5. However using Ubuntu's bootable disk, I could access Mac-HDDs contents - and was able to successfully back-up *all* my important data.
6. Googled and learnt that just attempting to boot using Ubuntu DVD can take away ability to boot using Mac bootable media - possibly due to EFI internals. Suspecting EFI is now corrupt, I tried other 'hacks' like:
6.1 eEFIt Boot Disk - which does not work at all,
6.2 Empire EFI w/ Chameleon - not sure how to proceed with options presented - trying either does not work,
6.3 Super GRUB2 - boots fine, but attempting to boot from Mac-HDD fails after a couple of seconds,
6.4 Boot-132 - boots fine, prompt asks for input, but then I cannot eject/replace the DVD due to Mac-Mini (lack of) design,
6.5 Ubuntu 11.04 / 11.10 - still boots fine - just that I cannot go into Mac-OS-X from here,
6.6 TechTool Pro bootable DVD - which used to boot fine earlier stopped to boot.
As you can see, none worked successfully. So I didn't yet try other popular rescue media - as I suspect that is not the direction I need to go into.
>> Looks like most of my problems are due to the fact that I have Mac-Mini which does not allow eject/replace of DVD from command prompt / out side of Mac-OS-X.
7. Tried emptying EFI partition, playing with EFI/Mac-OS partitions boot flags, Zapping the PRAM, nothing still allows me to boot either from Mac-HDD or any Mac-Bootable-DVD.
Current State:
8. Now while boot time, Mac displays a gray screen for a few seconds, and then a blinking prompt on black background. That's it!
Snow Leopard 10.6 Retail Install DVD:
9. Went to Mac store and bought this DVD only to witness that I can't boot from it as well. (This is a huge shocker, how is Apple able to sell these DVDs if these don't work on genuine MacMini itself. After all we are able to boot from and install Windows/Linux on a variety of Machines).
I am hoping for a very small step/fix that I am missing, since I can still see and access all Mac-HDD contents after booting from Ubuntu bootable DVD. However I am prepared for a good amount of exercise as well - assuming someone posts a valid/verified fix.
Things available right now:
==========================
A. Genuine Mac-Mini (Late 2009) who lost it's ability to boot either from its HDD or Mac-bootable DVDs (TechTools Pro, Mac OS X retail DVD)
B. Mac OS X 10.6 Retail DVD
C. NOT AVAILABLE - DVD that came with this Mac-Mini
D. Variety of rescue DVDs, listed in section 6 above
E. Another machine/PC with Ubuntu 11.04 - giving me ability to access internet
Thanks for reading.
Zita

I had a similar discussion recently with another user.
Your Mac mini (late 2009) originally came with Mac OS X 10.6.2 build 10A432 or build 10C2234 see http://support.apple.com/kb/HT1159 it would have come with an original install disc specific to your model of Mac which you could use to run Disk Utility from or to do a complete reinstall.
The retail boxed copy of Mac OS X 10.6 (Snow Leopard) was originally intended for older Macs which had previously come with Mac OS X 10.5 or 10.4. It would have on it a version of Mac OS X 10.6 or 10.6.1 which would be able to boot these older Macs, but had no need to boot newer Macs which were released after the launch of Mac OS X 10.6 since all those newer Macs already shipped with their own discs.
So it is normal that the retail boxed Snow Leopard installer does not work on your model Mac mini. You should be using the one that shipped with your Mac mini instead. I am guessing you have lost it.
Assuming you have lost the Mac mini original disc, I can suggest the following options to try and workaround this.
If you have another Mac, an older Mac, one that will be bootable using the retail Snow Leopard install disc you have, you could do either of the following.
Connect an empty external GUID partitioned hard disk to this other Mac
Boot from the retail Snow Leopard installer
Install on to the external disk
Once the install is complete, update it using the combo update not the one via Software Update to Mac OS X 10.6.8. This will add all the newer drivers needed to allow it to work on your newer Mac mini. You can download this combo update from here http://support.apple.com/kb/DL1399
You can now disconnect the external drive and connect it to your Mac mini and boot from it by holding down the Option key when you turn the Mac mini on
or a similar process if you want to wipe the Mac mini and reinstall directly on to it
Boot the Mac mini in FireWire Target Disk Mode (see http://support.apple.com/kb/ht1661 )
Connect the Mac mini as an external hard disk to the other older Mac
Boot from the retail Snow Leopard installer
Install on to the external disk
Once the install is complete, update it using the combo update not the one via Software Update to Mac OS X 10.6.8. This will add all the newer drivers needed to allow it to work on your newer Mac mini. You can download this combo update from here http://support.apple.com/kb/DL1399
You can now disconnect the Mac mini and boot from it as normal
Note: While the Mac mini is connected in FireWire Target Disk mode to the second Mac, you could backup (if you don't already have a backup) any files you need to retrieve.
If you don't have a suitable second Mac you may have to either borrow someone else's, or get the help of an Apple Store if one is in your area.

Please Help :( iMac 20" refuses to boot up with anymore than 1gb ram?

Please Help iMac 20" refuses to boot up with anymore than 1gb ram? It was fine 4 days ago and had been working with a 1gb stick in one slot and a 2gb stick, which had replaced the orignal 1gb stick that I got it with, in the other and it had shown 3gb of ram and was working just fine with that since November? It went to sleep briefly 4 days ago while I was waiting on a customer and I came back to try to wake it up and it never would forcing me to hard boot it. When I did that it would only go to a black screen with a solid white light on the power indicator. Over and over again and same thing. I read and tried every suggestion I could possibly find in this and a few other mac forums to no avail.
I finally after reading about RAM issues etc. I decided to power off and take out the ram sticks and try them one at a time in each slot. So I took out the 2gb stick and did the SMC reset and it would boot up and work just fine with the 1 gb of ram. So then I went through the same process with the 2gb stick and it would not boot up only go to a black screen with white solid light again (NOT flashing). So then I tried the other original 1gb I had replaced with the 2gb and it worked just find like the other 1gb. So then I tried just 1gb stick in the other ram slot (back facing one) and with just the 1gb strip it booted up and worked fine. Tried it with the other 1gb stick and once again that one too worked just fine. So I determined it wasn't the slot itself I thought? I then tried the 2gb in the back slot and it would not boot only go to the black screen white solid light deal like before. So I thought well ok it's obviously the 2gb ram must have somehow went bad (even though I have only had it since November) and I thought well I will just use the (2) 1gb sticks in each slot and then that will at least give me 2gb because only 1gb really ***** LOL. So I proceeded to go through the same shut down process installed both sticks (I always push them to I feel them click and my fingers have a nice indention on them) reset the SMC and turned the power one and.... It would only go to the black screen with white solid light on power indicator???? I went through the same above process at least 3 times and again today a few times and I can't figure it out and I tried to search and search and I couldn't find anything like what I am experiencing.....What happened? Please help this slow Imac is killing me. It will work with 1gb ram only nothing more? Here are the specifics of my Imac.
It is a 20" Late 2006 Intel Core 2 Duo 2.16 ATI Radeon X1600 256 MB graphics card and Ram with now only 1gb (did have 3gb) and I am running OSX Lion 10.7.5
When I go to system report and go under memory it shows this:
BANK 0/DIMM0:
Size:          1 GB
Type:          DDR2 SDRAM
Speed:          667 MHz
Status:          OK
Manufacturer:          0xCE00000000000000
Part Number:          0x4D342037305432393533435A332D43453620
BANK 1/DIMM1:
Size:          Empty
Type:          Empty
Speed:          Empty
Status:          Empty
Manufacturer:          Empty
Part Number:          Empty
Serial Number:          Empty
Any help I can get would really be appreciated. Thanks in advance
ALSO...Here is also a pic of the system log right before it happened. It even changed the date to 07/2014????
I have some more if needed???????????????
<Personal Information Edited by Host>

The Memtest just completed and came back like this? It only test the single 1gb chip because anything more in this computer it won't go past the black screen with solid white power light.
Memtest version 4.22 (64-bit)
Copyright (C) 2004 Charles Cazabon
Copyright (C) 2004-2008 Tony Scaminaci (Macintosh port)
Licensed under the GNU General Public License version 2 only
NOTE: No command-line arguments have been specified
Using defaults: Test all available memory, one test pass, no logfile
Mac OS X 10.7.5 (11G63) running in multiuser mode
Memory Page Size: 4096
System has 2 Intel core(s) with SSE
Requested memory: 250MB (263086080 bytes)
Available memory: 250MB (263086080 bytes)
Allocated memory: 250MB (263086080 bytes) at local address 0x0000000101000000
Attempting memory lock... locked successfully
Partitioning memory into 2 comparison buffers...
Buffer A: 125MB (131543040 bytes) starts at local address 0x0000000101000000
Buffer B: 125MB (131543040 bytes) starts at local address 0x0000000108d73000
Running 1 test sequence... (CTRL-C to quit)
Test sequence 1 of 1:
Running tests on full 250MB region...
Stuck Address       : ok
Linear PRN          : ok
Running comparison tests using 125MB buffers...
Random Value        : ok
Compare XOR         : ok
Compare SUB         : ok
Compare MUL         : ok
Compare DIV         : ok
Compare OR          : ok
Compare AND         : ok
Sequential Increment: ok
Solid Bits          : ok
Block Sequential    : ok
Checkerboard        : ok
Bit Spread          : ok
Bit Flip            : ok
Walking Ones        : ok
Walking Zeroes      : ok
All tests passed! Execution time: 362 seconds.
logout
[Process completed]
Seems Okay I guess?

Can't boot from cd anymore after using norton systemworks 3

It is an imac 233 , and now all that comes up on boot up is a
command line and it won't boot from cd anymore when I hold
down c. I'm not familiar with any mac command line at all except dos. Any ideas?
Recently trying to install a new hard drive by the way and to
install os 9.04. 1st says I need to update firmware but it said volume was locked and firmware won't be updated; which led me to try to unlock it with system works. What a mess.
update now it won't boot at all. Did I kill it?

blues,
As I remember, Norton SystemWorks v3 may be the first (and last) version designed to work with OSX. It was awful. Put it away and never take it out of it's box again.
It sounds like you've got yourself into the open firmware prompt. In fact the text shown on the screen should show this.
It's un usual for Norton to force the computer to jump into Open Firmware, but type
mac-boot
to get your mac to continue to boot into the installed OS if there are no other issues.
It could be this:
http://docs.info.apple.com/article.html?artnum=25249
if the new hard disk you've installed is greater than 8Gb. In which case you'll have to re-partition it so that the first partition is smaller than 8Gb and install your OS on that first partition. In fact it's most likely this.
Let us know how you get on.

Unable to boot on Mac Os X DVD

Hi,
i've bootcamp (lastest version), i use rEFIt to choose from wich partition i'll boot.
My problem is, can't boot on Mac Os X partition anymore.
I got the white screen with the Apple logo, and nothing else..
but i can boot on Windows XP !
I tried to boot on the Mac OS X DVD (for an authorization check-up), but i can't ! The screen stay grey and nothing happens..
What can i do ?
Thanks for your help
( sorry for my poor english )

Consider posting under Boot Camp Public Beta found under the section Windows Compatible Technology, for a quicker response.

Macbook pro cant boot from external dvd device please help !!!!

hello everyone please help me i have macbook pro 2011 core i5 version
i just installed 2.5 ssd as second hdd
i cant boot from external dvd device to install any os the external dvd keeps on spining and mac is just thinking it doesnt show press any key to install
it shows the device when a boot into mac parition
i am trying to install windows on origianl 500 gb hdd and linux on ssd
but not luck
the external dvd drive works i pluged into my pc and it works
please help thansk in advance
200 gb mac
300 gb windows
120 ssd linux

I do not know about Disk Warrior but if you have a compatible OSX on an external HDD you certainly can boot the MBP. Use startup manager:
https://support.apple.com/en-us/ht1310
Ciao.

PowerMac G4 doesnt boot with Mac Os 9/Tiger

Hi all, so I have a G3 and a G4. On the G3 I can boot without problems Mac OS 9 Retail, on the G4 instead I cant boot Mac OS 9 or Tiger (always Retail version).
The only boot i can do on the G4 is Ubuntu...
I tried so many ways, c, pram, reset-nvram/-all, installing Mac Os 9 on the hd by G3 but without solution...
Some ideas?

Hi, elect86 -
Re OS 9 -
Your G4 (Gigabit Ethernet) model can not use an OS 9.0 Install CD, nor an OS 9.2.2 Install CD.
It originally came with a model-specific version of OS 9.0.4. It should be able to boot to the Software Install CD that came with it, which uses that OS.
It should also be able to boot to and use a retail OS 9.1 or 9.2.1 Install CD. All retail OS 9 Install CDs have a white label with a large gold 9.
It can not use any OS 9.2.2 Install CD - the only OS 9.2.2 install disks released were ones that shipped with certain Macs, and are model-specific to those machines. There has been no retail OS 9.2.2 Install CD released.
Recommendation - if you do not have the original Software Install CD that came with your G4 (Gigabit Ethernet), obtain a retail OS 9.1 or 9.2.1 Install CD.
Re OSX (Tiger) -
If your disk set for Tiger is a retail set, it would have come on DVDs. If the optical drive on the G4 is not DVD bootable, then the DVD set will not work. There was (may still be) an exchange program for Tiger, to exchange the DVDs for a set of CDs.
Another possibility in that regard is that the firmware on the G4 has not been updated to v. 4.2.8. This can be installed provided the machine has a bootable OS 9.1 (or later, but not OSX) installed on the hard drive.
Article #120068 - G4 Firmware Update 4.2.8
If by chance the Tiger install disk set that you have is one that came with a different model Mac, it will not be usable on your G4 (Gigabit Ethernet) machine.

Cant boot in Mac anymore

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