OS X Lion wont boot

hi all
I have the following problem, I want to install OS X on my macbook pro Lion (Core 2 Duo 2.16 GHz 3GB RAM) in a clean, burn the dmg on a usb, but does not load the operating system stays at the gray screen and Apple logo and no progress, it is noteworthy that I have problems with the firewire port but it could remove snow leopard easily and runs smoothly snow leopard, need help please, thanks.
greetings from Mexico.

I am in the exact same situation. Has anyone figured this out yet?

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Mac os x lion wont boot after an EFI upgrade and i am unable to reinstall using recovery hd.

i have macbook pro 2011 mid . it came preinstalled with lion (10.7.x)
I updated my mac os x lion for an efi upadte (i don't remember the version but it was there in update list) ,java and safari . After downloading it restarted. i heard a beep sound and system restart twice. And now whenever i start my laptop i saw an Apple logo beneath it there is a status bar which progresses very little for 2sec approx and system shutdowns.
I have backed up my data using Single user Mode. i have a bootcamp drive of 35 gb and it working fine.
when try to reinstall os using recovery hd, after accepting all agreements and connecting to wifi, what i saw was there are three drives Recovery,Bootcamp and Macintosh and all were locked. i chose macintosh (214 used and 500 approx free) for setup and prompted for password to unclock it. i filled the password and again chose macintosh for setup and clicked install. Within a fraction of seconds i got an error "error while trying to prepare for installation" or something like that.
is there any way to fix my macbook pro? what kind of problem is this Hardware or software("My Vote")?
what should i do to fix it?

..Step by Step to fix your Mac
Erase, formatting, OS X installs on Mac's
http://www.everymac.com/ultimate-mac-lookup/
http://mactracker.ca/
https://support.apple.com/kb/HT1237
https://support.apple.com/kb/HT2213

Have a late 2006 iMac with new Ram installed in late 2011 . I am currently running Mountain lion. Did/ hit something while half asleep and was asked for my recovery password didn't know it.Not sure what i did after that but wont boot just searches,

I have a late 2006 iMac with new Ram installed in late 2011or early2012 . I am currently running lion. Did/ hit something while half asleep and was asked for my recovery password, I didn't know it & not sure what I did after that but it wont boot up just searches with a light grey whit -ish screen. Cant get it to clear. Any advice?
Charlies Secret Angel-

Try to boot in Safe mode, see if you are able: Hold down shift and then power on. For wireless keyboards, hold down shift after the chime.
Safe Boot
Resolve startup issues and perform disk maintenance with Disk

Early 2011 2GHz Macbook pro distorted blue screen then wont boot, 3 times in last 2 weeks

I have an early 2011, 2GHz macbook pro (15' model with ati radeon graphics). It was running fine for the last two years. Over the last couple of weeks, following things happen:
1. I was running on bootcamp windows, browsing and some flash content was open, suddenly distorted blue stripes appear and it froze. Force shut down using power button, turn on again and it wont boot on windows or mac, or recovery partition or from the dvd. Tried for about 4 hours, after nvram, pram reset, it was able to safe boot, then run disk utility to verify and repair the disk, it said that there were problems with hard drive and fixed,then booted normally.
2. I thought that the problem might be because I was on windows, so took a back up of the windows drive, erased it and installed windows 8 using bootcamp. It ran well for an week. After that, once I connected it with the tv using HDMI to watch a video, after I disconnected it, the screen was garbled over the windows start screen, but I was able to command restart normally. After restart, it wont boot to windows or mac.
3. After several hours of trying, i was able to boot using the dvd this time, it said it 'can not install mac on the hard drive', erased the hard drive and it was able to install the os (snow leopard). After completing install, logged in to app store to download previously purchased mountain lion. Then ran it to upgrade the os, after the upgrade was completed, at the point when it prompts for apple id and password to set up icloud, it again froze with distorted blue screen. Shut down forcefully. Then turn on again and it wont boot. After the white screen and the sound, it shows the apple logo and spinning wheel for a while, then a bright white screen and nothing happens.
Can anybody help reading the symptoms?

I have the Early 2011 2GHz Macbook Pro and I have the same problem too.
I switched out the logicboard a month ago and today the graphics just went distorted.
Any solutions? Now I'm thinking it is the Graphics Card.

Imac wont boot

My late 2008 iMac wont boot. I have tried everything that i understand but cannot accesss harddisk.
I cannot boot fron dvd -cd or usb. I would like to run diskutil from terminal to repair and verify. System hangs/ stops running, when i try command+v ,message that (vmcl: Module initialized.)
Command + s puts me in single user mode and i cannot run diskutil.
Safe start is also not working.
I have all my work on imac and depserately need help.
Any ideas ???
Imac 2008 24" 3.06GHZ/2GB/500GB/SD8X/GF8800GS/512.
Downloaded and installed Lion recently, all software is ligitimate.
Running vmware / Vista, occasionally.
Machine just stopped, froze up.

Hei, just to let you know. I gave up and delivered my machine to mac repair. It turned out that a module error was the cause of my problems. They have since replaced the defective part and my machine works like a dream. No reinstalling either, all existing files and software are intact.

Created 3 partitions on new Mac Mini, deleted one, and now Bootcamp wont boot anymore! Need help please!

Here's my dilemma. I have a new Mac Mini - a week old. I installed Windows 7 on it using Mac's Bootcamp assistant. I then set up and configured my Windows 7 world and everything worked fine. No issues logging in between Lion or Win7 via the restart/option key procedure. Well, yesterday I split my Mac HD partition one more time to create a third partition (was created as an "extra", e.g. possible future partition for another operating system). After creating it, I then decided that I didn't really need it. So I deleted it in Disk Utility and attempted to drag the Mac HD partition line downward so as to "fill in the gap" and reclaim the lost hardrive space. It seemed as if I could reclaim about 1 gig or so, but I figured...oh well.
Well, the Mac HD partition seems to work just fine, but now I've noticed that I can't get into the Bootcamp partition anymore. It wont boot. If I try to verify the partition [doesn't even give me "repair" as an option), then it fails and gives me the following error message: "verify volume failed. invalid request." When I go to the Startup Disk option in my System Preferences section, it displays the bootcamp partition as a folder and not as a drive anymore.
I'm assuming that I messed up some permissions or lost some vital links during my attempted resizing/reclaiming of harddrive space. How do I fix this without having to reload either all of my Mac info or all or my Win7 info? I'd hate to consider the last two days of my life loading this crap up a complete loss.
Thanks in advance!

Hi surroundsound,
you can't put more partitions on internal HD once you install winOS with Boot Camp.
The sure fix is to delete the windows partition (with Boot Camp Assistant, not Disk Utility), then getting rid of the extra partition (with Disk Utility).
then you can re-install your win& (recreate the win. partition with Boot Camp) - don't add any partitions after.

2010 13" MBP Wont boot from internal. Will boot from external

This is fairly long winded, I will try to be as clear as i can.
Last week my 13" MBP refused to boot after running out of battery during sleep.
I have done the following to the original drive:
Booted from Lion Recovery, repaired, verified, and repaired/verified permissions.
Booted from Snow Leopard DVD, done the above.
Used Disk Utility on another Mac, done the above.
The drive still will not boot from the internal cable.
I can see the drive when attached internally, but cannot do any of the above actions as it is "unable to unmount"
I can boot from the drive if I use a USB external adaptor.
I bought a new hard drive....
I have done all the same on the new HDD with additionaly installing fresh Lion / Snow Leopard to the new drive whilst its in the internal position (Leopard from the DVD originating with my laptop, Lion from Lion Recovery whilst the other drive was on USB) but still having the same problem when it comes to booting - i.e. wont boot from internal. will boot from external USB.
Ideally I would like to end up with a lean install of lion, on the new hdd, booting from inside the laptop.
Please help, this is driving me mad.

I think you have solved your own problem. If you have two different HD's and they both do not work once connected, but do when placed in an external enclosure, then I would think it has something to do with the connection.
Slap the old drive back in the machine, and take it to the genius bar, and have them diagnose it. Hopefully they will have an answer for you. If not, bring the other drive too inside he external enclosure, and show them that it boots via the external.
Then, lay the whammy on them, and tell them that the original drive works inside the enclosure too.
Would be interesting to know what the actual issue is, and the resolution as well...

My imac wont boot and a small square shows up next to the cursor

Hi
my imac wont boot and a small square shows up next to the cursor. I can open in safe mode. I have reinstalled the OSX, but can't boot from back-up.
Any advice?

OK.....I figured it out.....after reading endless threads on the cursor issue, I found out that apple calls the cursor a MOUSE POINTER..! and the square that follows it a 'corruption'...GO FIGURE!
Anyway, this is what I did.
I tried reinstalling Mountain Lion....online install. It didn't resolve the issue. Same problems
Then, I tried reinstalling from the original DVD install disc....this wasn't possible (no access sign over install icon).
So I finally erased my hard drive (after rebooting command - r), BUT NOT BEFORE BACKING UP MY FILES, APPLICATIONS, SETTINGS and any other important data!!!!!!!
Then started up command R
Then reinstalled Mountain Lion online
My iMac started up like it does when you install 'out of the box'...follow the instructions....
my cursor, or mouse pointer is now free of it's 'corruption', and boots up just fine!
Hope this helps anyone out there with the same issue

My mac book pro wont boot up

i turned my mac book pro off, and now it wont boot. i try reinstalling os but it wont let me.its showing it in the disk utilty,now it wont let me install.it says mac os x cannout startup from this disk.What do i do?

I can't help you until you answer the questions I asked. If you want to reinstall Snow Leopard then follow these instructions:
Downgrade Lion to Snow Leopard
1. Boot from your Snow Leopard Installer Disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Quit DU and return to the installer. Install Snow Leopard.
This will erase the whole drive so be sure to backup your files if you don't have a backup already. If you have performed a TM backup using Lion be aware that you cannot restore from that backup in Snow Leopard (see below.) I suggest you make a separate backup using Carbon Copy Cloner 3.4.1.
If you have Snow Leopard Time Machine backups, do a full system restore per #14 in Time Machine - Frequently Asked Questions. If you have subsequent backups from Lion, you can restore newer items selectively, via the "Star Wars" display, per #15 there, but be careful; some Snow Leopard apps may not work with the Lion files.

Osx wont boot after installing windows dev preview.

Hi. I recently added boot camp and windows 8 to my 2011 mbp 17". Ever since the install my computer wont boot osx unless i run disk utility and repair my mac partition. Then everything runs fine untill i go into windows again and then go back to osx. Thoughts?

mcwilliamsc wrote:
Do i need to make a clone or will my time machine backup work.
TimeMachine drives are not "hold the option key bootable" like a clone and with Lion there is only a "hold Command r" Recovery Partition on the same drive your trying to repair.
So to get a external source to boot Lion, you need to Carbon Copy Cloner Lion to a another new/blank Disk Utility HFS+ Journaled formatted drive. Disconnect your TimeMachine drive before doing anything and don't clone to it or everything will be erased, use another drive.
Once you have Lion cloned, hold option and boot from the Lion clone and test it out.
mcwilliamsc wrote:
I only have one external drive andni dont think a clone will fit.
Only clone to another drive with no data on it, don't clone to a partition, don't clone to a TimeMachine drive. Disconnect all other drives before cloning so you don't make a mistake.
mcwilliamsc wrote:
Also when you say c boot do you mean using a lion install disk as opposed to the install option when you boot into disk utility?
Your signature says you have 10.6.8, obviously there are no install disks for 10.7, however you can make some by "hold option" and clicking on Purchases in the MacAppStore and redownloading the Lion installer (but don't install)
Follow these directions to make multiple "hold c" bootable DVD copies of the Lion installer.
http://eggfreckles.net/notes/burning-a-lion-boot-disc/
Test the disks out, you can see it's just like the 10.6.8 installer disk with Disk Utility and everything.
With a Lion DVD one can install Lion AND the Lion Recvoery Partition on a new or totally erased drive, like we are about to do.
When you clone Lion, it only clones the Lion OS X partition, not the Lion Recovery Partition. So by totally erasing the entire disk and installing Lion from the DVD can the Lion Rececovery Partition and Lion OS X partition be restored and your GPT repaired and your firmware flushed.
So once you got a Lion clone disconnect it, then c boot from the DVD and erase your ENTIRE Lion internal drive, this means you have to select the drive makers name on the left, HFS+ journaled of course.
Once that is competed, install Lion fresh, this will create both the Lion OX partition and the Lion Recovery Partition.
When that is finished, don't bother booting into the fresh Lion install, simply option boot off the Lion clone and reverse clone onto the Lion OS X partition, this will place back Lion, all your programs and files just like before.
Then you should be back to normal, your GTP is fixed, EFI is fixed (reboot twice) and you have everything except the Windows bootcamp partition.

Mac OS Mountain Lion wont start

Mac OS Mountain Lion wont start. It's just stuck on white screen with spinning gear, once the white screen goes, I get a kernel panic...I suspect this issue has been caused by the recently installed xcode, it was the last program I installed this morning

Reinstalling Lion/Mountain Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
And, remove XCode. If it's needed then be sure you install the current release version for Mountain Lion.

Mac pro wont boot or chime

Mac pro wont boot or chime

you don't know how to provide more details or what you have tried or are you just lost?
What OS is on it? and this is a 4-drive 65 lb workstation and not a MacBook Pro notebook.
Safe Boot
Lion or ML Recovery Mode
Reset SMC
Kernel Panic
Resolving Kernal Panics
http://www.thexlab.com/faqs/kernelpanics.html
http://reviews.cnet.com/8301-13727_7-10344626-263.html
http://macs.about.com/od/usingyourmac/qt/Troubleshooting-Os-X-Kernel-Panics.htm
http://support.apple.com/kb/TS3742
Mac OS X Help
Isolating Issues in Mac OS
http://support.apple.com/kb/TS1388
https://www.apple.com/support/osx/
https://www.apple.com/support/quickassist/
http://www.apple.com/support/mac101/help/
http://www.apple.com/support/mac101/tour/
Get Help with your Product
http://docs.info.apple.com/article.html?artnum=304725
TimeMachine 101
https://support.apple.com/kb/HT1427
Mac OS X & Mountain Lion Community
https://discussions.apple.com/community/mac_os
https://discussions.apple.com/community/mac_os/os_x_mountain_lion?view=discussio ns
Recovery Mode
http://support.apple.com/kb/HT4718
ExpressLane
https://expresslane.apple.com/
Startup Manager: How to select a startup volume
http://support.apple.com/kb/HT1310
Troubleshooting: My computer won't turn on
https://support.apple.com/kb/TS1367
And just in case....
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
http://www.apple.com/support/macbookpro

Brand new Macbook pro 15inch (not Retina) wont boot my MBP 13 inch (2011) HD

Just bought a brand new macbook pro 15 inch, replaced the hdd with my 13 inch hdd and it wont boot. i got a Error msg. (Lion)
- I put the new hdd in the old MBP(13 inch) and it boots fine.
- I put back the old hdd in the MBP(13 inch) and it boots fine.
I figured the hdd wasnt compatable with the 15inch so then i cloned the 13inch hdd onto the 15inch hoping it would work. i still got the error msg.
so now im stuck because the 15inch wont boot from the stock hdd because it has the data from the 13inch. Very frustrating, what could be the logical reason to why it wont boot?

That's correct. The version of Lion you have on your old disk will not boot on the new machine.
What you should have done is make a Time Machine backup of your old drive. You still may be able to buy an enclosure for it and see if you can use Migration Assistant to migrate your apps and data, but I'm not sure that will work (works when an old drive is in another Mac and you transfer via, for instance, Firewire).
So you'll just have to resinatll the correct version of Mountain Lion and then you can TRY to use Migration Asistant to get your data/apps from your old hard drive once it's in an enclosure (again, I'm not sure that it will actually WORK, I've never tried it).
Clinton

My macbook pro wont boot ... need help

battery its fully charged and battery indicator work but wont boot?

Reinstall OS X.
To reinstall Snow Leopard:
Reinstall OS X without erasing the drive
Do the following:
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install the Combo Updater for the version you prefer from support.apple.com/downloads/.
To reinstall Lion:
Reinstalling Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

OSX Lion not booting on mbp early 2011

Hi I have a 2011 early mbp. Ive never had any issues with and and I upgraded to Lion when it came out. About 4 days ago it just would not boot into Lion at all. Would get stuck at the Apple Picture and the circle thing and thats it. I tried to boot the recovery partition and it would still get stuck at the same spot. I took out my hard drive and connected it Via USB on my iMac and it boots up just fine. I than used the recovery from the iMac and reinstalled Lion on the mbp hard drive. I put the hard drive back and it still wont boot up. Any ideas?

Have you tried booting in Safe Mode ?
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
If still failing, sounds like an internal component failing and would visit an Apple Store and show them it's not the hard disk since it boots via USB.

OS X Lion wont boot

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