Cannot erase and reinstall osx

I am attempting to erase and reinstall osx 10.8.5 on my imac with no success. I have tried booting up with command option R and using disk utilities. The problem is that the erase or the partition functions are greyed out. Any suggestions?

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Erase and reinstall OSX server (Mountain Lion)

I would like to do an erase and reinstall of my Mac Mini Server (Fall of 2011) that now has Mountain Lion on it. I have data on the second drive but would like to erase the primary drive and reinstall mountain Lion and mountain Lion server.
Is this possible, and if so would you point me in right direction for instructions to do this?
Thank you

Just hold down Command-R during startup,
From there use disk utility to erase the primary drive then use the reinstall option to load up a fresh copy.

Erase and Reinstall need some help

After upgrading one on top of another on top of another a few times, It is time completely erase and reinstall OSX. At one time there was a migration guide somewhere, (Kappy?) that went through some tips of erase and reinstall — Where Microsoft information is stored, e-mail, contacts, etc. What about delete and reinstall Adobe Creative Cloud? Is Migration Assistant the best way to do this now?
Advice appreciated.

Do a backup, preferably 2 separate ones. If you want to make a clean install, boot into the Recovery Volume (command - R) on a restart, use Disk Utility to Verify/Repair the disk and run Repair Permissions. Then erase the hard drive using Mac OS Extended (Journaled) format using the Options button to select GUID. Reinstall the OS. Restart normally and test. Use Setup Assistant or Migration Assistant to import what you want. I recommend Setup Assistant.
Clean Install

Unable to restore from Time Machine after an erase and reinstall - MacbookPro cannot access my old Time Machine backup volume. Desperate for help please?

My MacbookPro would not move past the Apple logo and spinning wheel for a number of hours. After trying the numerous suggestions to solve the issue I eventually opted to erase and reinstall feeling confident my Time Machine backups would come to the rescue. After a successful erase and reinstall I tried to restore all my data from my TIme Capsule using Command-R during start up and by using the Migration Assistant. Neither worked and I have received messages to the effect that the backup volumes on my Time Capsule cannot be access because I have entered a wrong password or because the backup volume is damaged.
When I open my Time Capsule in Finder and click on my sparsebundle I get an eror message saying that the disk image could not be opened and that the resource is temporarily unavailable.
Desperate for some help and comfort that many years of personal data have not been lost.
Thank you.
M

When I try to Verify option it says Unable to Verify - Resource temporarily unavailable.
Here is the past of the log screen:
2013-06-09 15:00:00 -0500: Disk Utility started.
2013-06-09 15:09:01 -0500: Disk Utility started.
2013-06-09 15:19:53 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 15:19:53 -0500:
2013-06-09 15:20:00 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 15:20:00 -0500:
2013-06-09 15:20:05 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 15:20:05 -0500:
2013-06-09 15:20:13 -0500: Verifying Image “Macajee’s MacBook Pro”
2013-06-09 15:20:14 -0500: Unable to verify “Macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 15:20:14 -0500:
2013-06-09 15:25:21 -0500: Verifying Image “Macajee’s MacBook Pro”
2013-06-09 15:25:23 -0500: Unable to verify “Macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 15:25:23 -0500:
2013-06-09 15:25:27 -0500: Attach Image “Macajee’s MacBook Pro”
2013-06-09 15:25:27 -0500: Initializing…
2013-06-09 15:25:31 -0500: Attaching…
2013-06-09 15:25:31 -0500: Finishing…
2013-06-09 15:25:32 -0500: Unable to attach “Macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 15:25:32 -0500:
2013-06-09 20:02:06 -0500: Disk Utility started.
2013-06-09 20:05:22 -0500: Disk Utility started.
2013-06-09 20:07:11 -0500: Disk Utility started.
2013-06-09 20:18:34 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:18:34 -0500:
2013-06-09 20:19:34 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:19:34 -0500:
2013-06-09 20:19:36 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:19:36 -0500:
2013-06-09 20:22:29 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:22:29 -0500:
2013-06-09 20:22:33 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:22:33 -0500:
2013-06-09 20:22:45 -0500: Verifying Image “Macajee’s MacBook Pro”
2013-06-09 20:22:45 -0500: Unable to verify “Macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 20:22:45 -0500:
2013-06-09 20:34:53 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:34:53 -0500:
2013-06-09 20:34:56 -0500: [DUDiskController viewablePartitions] expecting DUDisk, but got nil
2013-06-09 20:34:56 -0500:
2013-06-09 20:38:17 -0500: Verifying Image “Macajee’s MacBook Pro”
2013-06-09 20:38:17 -0500: Unable to verify “Macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 20:38:17 -0500:
2013-06-09 20:47:35 -0500: Disk Utility started.
2013-06-09 20:53:06 -0500: Disk Utility started.
2013-06-09 20:55:30 -0500: Disk Utility started.
2013-06-09 20:56:40 -0500: Disk Utility started.
2013-06-09 21:06:32 -0500: Verifying Image “macajee’s MacBook Pro”
2013-06-09 21:06:32 -0500: Unable to verify “macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 21:06:32 -0500:
2013-06-09 21:07:08 -0500: Verifying Image “macajee’s MacBook Pro”
2013-06-09 21:07:08 -0500: Unable to verify “macajee’s MacBook Pro.” (Resource temporarily unavailable)
2013-06-09 21:07:08 -0500:

My 2009 MacBook Pro keeps restarting even after I wiped the hard drive and reinstalled OSX.

About a month ago, my laptop started to randomly turn off: I would be using either Chrome, Photoshop (the free CS2 version available from Adobe's website) or Powerpoint, and the screen would go blank. I would then have to hold the power button for a while until the little light at the front of the computer would flicker and it would restart. I brought it to the Mac Store where they tested it and said it looked fine. They suggested I erase my hard drive and reinstall OSX as a precaution.
Fast forward a month, I have been very busy with work and hadn't been able to fix this problem. It wasn't that bad, only once every couple of days, sometimes more, sometimes less, I could work despite this problem.
Then, I installed OSX Mavericks. The installation started in the morning, but, like an idiot, I paused it to go to work. Later on, I completed the installation, it looked fine, but then all day long my laptop would suddenly restart and go to a grey screen that said in multiple languages "Your laptop restarted because of a problem, press any button to continue the restart." A computer technician friend of mine checked it out and said it was probably due to the badly installed OSX and suggested that I erase my hard drive and reinstall OSX.
I backed up all my files, erased the hard drive and reinstalled OSX. Everything looked fine.
Then it happened again.
Any ideas of why this is happening?

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Erase and Reinstall - Could not unmount disk?

Hi there....
I'm running an iBook G4 with Tiger 10.4.11
After a freeze and manual power off, I powered up and got stuck at the grey Apple. Tried to start in safe mode - no luck. Started up off the install disk and ran Disk Utility - tells me Disk Could Not Unmount.
Spoke with Apple rep. - ran fsck in Single User Mode - got "Invalid Node STructure"
I've accepted that my files are lost - I have a good backup so that's that.
STarted up and got to Disk Utility again - want to do an Erase and Reinstall. Go to erase HD and am told "Could Not Unmount Disk"
....do I have any options??

Well, take into account I'm at a distance here & just guessing it's the HD, but yes, if it is that & you get it replaced, you should be able to install OSX just fine... and likely be much faster with a new HD in it.
Here's some hard drives...
http://tinyurl.com/aa4ae4
http://www.powerbookmedic.com/Powerbook-iBook-Macbook-Hard-Drive-Upgrades-Pro-Po werbook--iBook-Hard-Drives-p-1-c-517.html
Ultimately - should I be purchasing a new HD and putting it into this G4 - or look in to buying a new one altogether? ...I'd really rather not right now.
Depends what you do with it & such, but if it meets your needs it may pay to have it fixed, but checkout the prices at the Apple Store on refurb MacBooks & MacBook Pros to better gauge for yourself.

How do I reinstall backed up user folder after erase and reinstall of 10.4?

I had to erase and reinstall 10.4 on my g4 ibook. Prior to this I backed up my user folder on an external drive. Is there and easy way to get my machine the same as it was before the OS reinstall - library settings, files etc?

Is it assumed that apple users should have another apple machine and or a spare unused firewire hard-drive for system maintenance?!? Sure, if I were running it for buisness use, I'd have a mirrored drive, break the mirror, and upgrade one half of it, but this is the machine in my bedroom! I've got to say, I've rapidly going back of apple over these update QA issues. The fixes offered by people (and I appreciate the time and effort they put in to help others) so far all seem to involve creating other systems on spare drives, or using target mode from another mac. Come on Apple! You can't seriously expect your home users to have two machines, or a spare drive (personally, any drive I have, I use in something or other! I'd consider it a waste having a drive spare just for system upgrades to my Mac). It's about time Apple posted on this subject. It's unfair to expect your userbase to support your COMERCIAL OS for free so heavily.
I bought a mini because it was cheap, and I wanted to play with OSX. I bought the next OSX release because I had grown to like OSX. Now I'm rapidly going off it. I don't want to have to buy another device just to make it safe to upgrade.
Sorry for the Rant. Simon, this isn't meant as a criticism of your response. I just feel that apple should be more proactive here, having another disk is of course a good way to go, however, it takes the old TCO a bit to high for a home/play machine imho.
Anyone from Apple care to comment? (or will you simply edit out my post... afterall that would be easier than addressing the problem).

Problem in Downloading and Reinstalling OSX Lion via recovery HD

I am using MBP 13 inch late 2011. I have erased my Macintosh HD. Now trying to reinstall OSx 10.7 using Recovery HD. Mac is perfectly connected to Wifi, as soon as i click "Continue" to reinstall the Mac OsX 10.7, it shows me this message "To Download and Restore Mac OSx, your computer's eligibility will be verified with Apple."
I clicked "Continue"... But after few seconds of loading it showed me message "Could not fing Installation Information for this machine-Contact Apple Care"
Why is it so???
My mac is only 9 months old... And Im in Pakistan.
Need help or suggestion. How can I download and reinstall OSx again..
Thanks

You will need to contact AppleCare about this issue as we are just users to users here and can't authorize a account/download of OS X.
https://locate.apple.com/country

Erase and reinstall help - random shut off

I've been to diagnose my random shut off of my early '06 iMac Intel. It seems to shut down when I use a lot of memory.
I've done the AHT, resetting the PRAM, ran TechTools, and DiskWarrior.
It doesn't happen as frequently, but it still occurs. Shuts down randomly once a week. And I have to wait 10 minutes or more to start up again.
I saw a some users reinstalled OS X and it helped them.
SO FINALLY MY QUESTION, , I'M CURRENTLY RUNNING OS X 10.5.8 LEOPARD, BUT MY iMac ORIGINALLY CAME WITH TIGER 10.4.4, WHEN I ERASE AND REINSTALL DO I NEED TO USE THE ORIGINAL TIGER DISKS OR CAN I USE THE NEW LEOPARD?
Thank you for your help, I tried searching the forums but couldn't find an answer. Greatly appreciated.

ran Power Fractal and is still running for 15 minutes. Nothing happening. I'm not sure how to use the program. I messed with the colorspeed, i put it to 100. Put the max count to 131072. Zoom factor 10. I even opened up Final Cut Pro and Adobe Photoshop all running at the same time.
You did great, doesn't seem to be what I suspected.
I noticed a shut off when free memory is 500 or less.
Fantastic obsevation, RAM is one of the hardest things to test for, RAM tests can only be trusted if they find a problem, not if they don't... seems OSX is a better RAM tester than any RAM test, that being said...
Memtest OS X...
http://www.memtestosx.org/joomla/index.php
Rember is a freeware GUI for the memtest ...
http://tech.kateva.org/2005/10/rember-freeware-memory-test-utility.html
Run a test as long as you can.

Can I access my files for backup before erasing and reinstalling?

I haven't been able to find a thread dealing with this specific problem, so I thought I should try my luck with a post...
On Friday, my computer crashed and I have not been able to start it again. First, I got the image of a blinking file folder with a ?, subsequent restarts have produced the normal grey screen with the apple, followed by a blue screen or by simply shutting off. Booting in Safe Mode also produces a blue screen.
Booting from the install disk (OS 10.4) allows me to open Disk Utility, but I cannot repair the disk: Invalid Node Structure. When booting from the OS 10.5 disk, I cannot perform a repair disk: the BOOTCAMP partition of the drive is normal, but the Hard Drive partition is greyed out and indicates that the drive is not mounted.
I just bought an external hard drive last week and have used Time Machine to create backups, but it looks like the backups do not actually contain files - just references to the structure of my computer. I have many files backed up, but I will lose many other files and applications if I try to erase and reinstall. Is there a way I can access those files now, so I can transfer them to the external drive before I try to erase and reinstall (or, worst case scenario, replace the HD)?

I thought I would try restoring the system through Time Machine, using my external HD. The restoration process seemed to go well (no messages or interruptions). I opened Disk Utility to check the HD. It is no longer greyed out and when checked, it comes up okay, no need for repairs. However...
I just booted up again without the Install Disk and I got a black screen this time, with large white text saying "Disk Error/ Press any key to restart".
I pressed many keys, none of which restarted the computer. I shut it down with the power button and am trying to startup again.
Yikes!

Uninstall windows and reinstall OSX

I have a macbook air 11 inch 2011 .While installing windows 8 the vendor did some mistake and removed OSX. Now the only disc vol is windows and is not working properly.Takes time to boot and keyboard controls are not working. I want to remove windows and reinstall osx .Pl help me

Reboot holding down command+option+r
Choose disk utility, select your physical HD on the left and erase as Mac journaled partition
Exit DU, then choose install OSX to this drive

Erase and Reinstall on New Macbook Pro

I'm trying to start over. I have a new Macbook Pro, have had to erase the HD and reinstall OSX, and am trying to reinstall the iLife software prior to going through the Startup Assistant again. After reinstalling OSX, it just restarts and go straight into the Startup. How do I get the Applications Install completed first? The instructions aren't clear.
Thanks
Message was edited by: Randy Hess

No, I have a second disc that came with my Mac, but there are no promptings to insert that disc after erase and install. The disc with Mac OS X is retained after erase and install and there is merely a prompt to restart the machine. When I restart, the computer immediately launches into the information collecting mode which lets you configure the machine. I called it the "setup assistant" by mistake, sorry. You know the one I'm talking about... that starts up when you first open your new Mac. It won't let you quit this either, until you're done.
I want to install the 2nd DVD applications (iLife) before I go into the new computer setup because, when I bring information over from my old computer using that process, the iLife applications seem to need to be there for the transfer of certain information or it won't let you proceed. I've tried it twice now! Maybe I can go to the Mac OS X Installer after erase and install and see something I could do that would allow me to switch discs.
As a side note, I'm having a conflict regarding the use of my account name. It won't let me use the same name I did on my old computer's account. But if I change it, it moves my information to a second account other than my administrator account! I don't see why it can't just move my info to the account I'm setting up when it automatically fills in your name based upon your Apple information. Anyway, my information ends up being inaccessible to the administrator account because it's in a different account! I don't want to be logging into two different accounts on my own computer!
Maybe I'm making this harder than it should be somehow. I never thought I'd run into so much trouble by just wanting to bring information over from my old computer! LOL

Imac problems, need to erase and reinstall I think??

I have been having problems with my Imac. it is a 24" with I believe a 2.8ghz drive and so on. Anyways when I turn it on it goes to the white screen with the apple and the little moving circle thing. It does this for a while then shuts off. I have my time machine backups on an external drive so no worries there. I had this trouble before and we did a software update and it worked for about 3 weeks then doing it again. I was told if it did it again I need to erase the HD and reinstall OSX from the start but not sure exactly how to do it where i cant get to the main screen or even login screen. Please help.

Sako7STW wrote:
I have been having problems with my Imac. it is a 24" with I believe a 2.8ghz drive and so on. Anyways when I turn it on it goes to the white screen with the apple and the little moving circle thing. It does this for a while then shuts off. I have my time machine backups on an external drive so no worries there. I had this trouble before and we did a software update and it worked for about 3 weeks then doing it again. I was told if it did it again I need to erase the HD and reinstall OSX from the start but not sure exactly how to do it where i cant get to the main screen or even login screen.
Welcome to Apple's discussion groups.
I'd first try booting into "Safe Boot Mode":
http://support.apple.com/kb/HT1564
If that doesn't help, try "single user mode":
http://support.apple.com/kb/HT1492
If neither of these things improves the condition of your Mac, check back for more information.

HT201240 Erased and reinstalled my operating system did i loos my lion ? if so how do i get it back?

I have erased and reinstalled my operating system in doing so i did not reinstall leopard but did install disc 1 an 2 and Snow Leopard! I had lion also! how do i tell if i have my lion dowm load installed or not and how can i recover my lion?

Try the following user tip:
Recovering your iTunes library from your iPod or iOS device

What's the best way to erase and reinstall Lion?

I'm a little confused by the various posts I've read about erasing and reinstaling lion.
My MBP is about 4 years old. I upgraded to lion last summer and it never worked great, but over the last 3-6 months its been dragging. I want to start fresh. I've uploaded all of my personal files to a sky drive and then copied all of my extremely irreplaceable photos to two other hard drives. Now I'm just fuzzy about my next step.
I've read I need to make a boot disk, or a thumb drive or I can do it right from my system. I don't care which way or what I need, but I want it fresh with no chance of curroption.
Thanks for any and all direction.
Josh

While we all have MacBooks in this forum most of us don’t run Lion. There's a Lion Support Community where everybody has Lion. You should also post this question there to increase your chances of getting an answer. https://discussions.apple.com/community/mac_os/mac_os_x_v10.7_lion

Cannot erase and reinstall osx

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