HT1338 White screen after updating iMac with Mountain Lion
Since attempting to upgrade from Lion to Mountain Lion this morning I am seeing a white screen whenever I boot my iMac. It appears to be unable to boot. I left it 30 minutes with no activity on the screen before power cycling but the issue remains. I am hearing the "power on" sound when the iMac is powered up, but it simply stays on the white screen forever, without the Apple logo that we normally see.
I have a Time Machine backing up my iMac, but am unsure how I can restore from this as I am currently unable to get the iMac to boot.
Can someone tell me what I can do to get my iMac up and running?
Thanks....
Hey guys...
Just posted this potential solution over in the forum Clinton mentioned. Not sure if it's a proper fix, but it seemed to work for me.
Cheers...
Had my first experience with this just now. Shut down the MBPr for it's longest off time since getting it last week (about 6 hrs) and logged in to the BSOD.
My go-to solution on any other MacBook has always been the PRAM reset.
Restart your machine. Hold down CMD+OPT+P+R before the gray screen shows up (harder now than on the older, slower machines). Keep holding it down until the startup sound plays 2 or 3 times. Then release the keys and let it boot up normally.
No idea why this works. Don't have any clue what PRAM even is or what it would have to do with all this - but it worked for me. At least this time. Maybe it won't the next!
Hope it helps you all...
http://support.apple.com/kb/HT1379?viewlocale=en_US&locale=en_US
Similar Messages
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I just upgraded to OSX Mountain Lion from OSX Snow Leopard, thinking this was the thing to do. I have NEVER had any problems with Snow Leopard, but
after just a few days after downloading OSX Mountain Lion when I turned the computer on, the screen was white. Stayed white. I had to go onto another
computer to find out what to do. What caused this and will this happen again?Did you see a circle made of light grey hash marks in the center/bottom of the screen? My iMac is 5 years old and for every update until 10.8.2 I would get the same white screen and the first few times I paniced and thought the machine was broken! Just let it play out until the desktop comes back up and it should not do it again until you do a system update.
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Black Screen after log in with Mountain Lion
For 6 times, in 8 attempts, my retina macbook pro fails to boot up. All goes black after I enter my user password and I have to press the power bottom for 3 sec to restart. It sounds like a system error, and for sure didn't happen before I installed mountain lion, should I attempt to do a fresh install? Or run any tests?
Any advice appreciated.Hey guys...
Just posted this potential solution over in the forum Clinton mentioned. Not sure if it's a proper fix, but it seemed to work for me.
Cheers...
Had my first experience with this just now. Shut down the MBPr for it's longest off time since getting it last week (about 6 hrs) and logged in to the BSOD.
My go-to solution on any other MacBook has always been the PRAM reset.
Restart your machine. Hold down CMD+OPT+P+R before the gray screen shows up (harder now than on the older, slower machines). Keep holding it down until the startup sound plays 2 or 3 times. Then release the keys and let it boot up normally.
No idea why this works. Don't have any clue what PRAM even is or what it would have to do with all this - but it worked for me. At least this time. Maybe it won't the next!
Hope it helps you all...
http://support.apple.com/kb/HT1379?viewlocale=en_US&locale=en_US -
HT1338 I have tried to updated my iMac with Mountain Lion.
HELP!! I have tried to updated my iMac with Mountain Lion, OS X 10,8,3 (12D78) to 10,8,4, it keeps asking me to restart to install the updates, having tried this 20 times the app still has update available and I just go round again. how can I get this to finish and update correctly
Try downloading the update from the Apple Downloads site. http://support.apple.com/kb/DL1658
Or, you might try booting into Safe Mode and try to install through App Store. http://support.apple.com/kb/ht1455 -
Why does my iMac (with Mountain Lion) no longer recognize my external hard drive I have used as a back up via Time Machine after the hard drive was accidentally unplugged?
Do you mean the external hard drive is not mounted on the iMac desktop?
Check if Disk Utility sees the drive. Applications / Utilities / Disk Utility. If the external shows up in the left column, select it and click on Mount.
If it does show up this way, I recommend using DU to Repair Disk. -
Why does my iMac with Mountain Lion fail to print.
My iMac with Mountain Lion fails to find my 2 networked printers on 50% of the occasions I try to print. Even though I have earlier switched the iMac on, the only way I can get the iMac to see the printers is to restart the iMac? After that I have no more probs. Leaving the iMac on standby overnight doesn't seem to help as the problem frequently re-occurs the next day
The Brother Laserjet printer and iMac are cabled to my router, while the HP Photoprint uses wi-fi connection. There is a PC/Windows 7 also on the network which shares the printers.
I seem to get no help from the Printer utilities in system preferences.
Any suggestions what I need to do to eliminate this apparent breakdown in communication between the printers and my iMac.Hello Mike17swr,
Thanks for the post. I'm not sure which model of Photosmart printer that you have connected, but I have included a link below with some great t-shooting steps to help identify the issue. Good Luck!
http://goo.gl/HeZm3
I work for HP but my posts and replies are my own....Thank you! -
i have an iMac with mountain lion 10.8.3 with boot camp 5.0.2 .i installed windows 7 -64 bit with boot camp but the boot camp didn't install drivers for windows please guide me for trouble shooting .
Kappy wrote:
Boot Camp doesn't install the drivers. You have the drivers on a separate USB device if you followed directions. Once in Windows connect the USB drive with the driver software. It should startup automatically and install the drivers.
You don't even need to do that. As downloading the drivers from within Boot Camp Assistant can be unreliable, it is better to get the package directly from here:
http://support.apple.com/kb/DL1638
Copy the .zip file to a USB flash drive or burn it to a DVD in OS X. Install Windows as normal, insert the flash drive/DVD in Windows, copy the .zip file to the hard drive, extract it, then run the setup executable. -
I've got a new iMac with Mountain Lion OS. Have created a slideshow complete with music in iPhoto, but every time that I try to export it to an iPhoto slideshow folder, it gets halfway through and freezes. This has been going on for a couple of days. I've tried opening iPhoto holding down the option key, but it doesn't make a difference. Any advice, please?
Upgrade to v9.4.1 or
Trash the HP Plug in from /Library/Application Support/iPhoto
There are two libraries where this plugin might be
HD/ Library
and
HD/Users/Your Name / Library
(On 10.7 or later: Hold the option (or alt) key while clicking on the Go menu in Finder to access the User Library) -
I cloud on my Imac with Mountain Lion - signing out means losing contacts, etc.
Help. I have tried to sign out of I cloud on my Imac with Mountain Lion but it says if I do so it will either delete my contacts, documents, etc. from the computer. Something is not right here. How can I prevent this from happening? Thank you.
You have to remember that your email, calendars and contacts live on the iCloud server, not on your Mac, and your Mac reads them from there (like webmail)*. So if you sign out, you don't affect the actual data in any way because it's still on the server, but your Mac loses access to it. When you sign back in it's all still there.
However, as Julian says, there is no reason to sign out unless you are actually having a technical problem that may be solved by signing out and in again. The whole idea is to stay signed in at all times.
*Just to clarify, your Mac maintains a cached copy of the data to speed things up, and so that you can still see it when you are signed in but have no internet connection; but this cache is deleted when you sign out. For practical purposes you can ignore it. As with all caches (and your Mac has a lot) it's hidden (hence the name) and can't be regarded as an actual copy. -
I have to keep turning on an off the wi-fi connection to connect to my network after system shutdown with mountain lion, I did not have to do this with 10.6.8 before I upgraded, is there a bug fix in the works?
Many have posted this fix:
Go to System Preferences > Energy Saver > Computer Sleep ... set to anything greater than the 15 min. default setting. -
if you have internet sharing on imac with Mountain Lion its stil problem with sleep mode ! why ???
Log a bug with Apple, with whatever details you can provide. In the interrim, consider acquiring a router; either a repurposed x86 box running open-source networking or gateway software, or a commercial device.
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How can i open my iMac with mountain lion in 32 bit. With the Mountain Lion, some important softwares are not functioning. Please help !
Thx for yr reply. maybe i don't express myself very well. i know ML is 64 bit system. and it does not open up my VPN connection (the VPN connection i am talking here is Cisco and it is only in 32 bits) . i was wondering is there a way my macbook air 11 inch first generation can turn back into its original operation system, so that i can use the VPN connection. THX
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On iMac with Mountain Lion I am now unable to send but can receive e-mails. Previously worked fine. I use an iCloud acct and Safari browser. Internet connection is wireless via cable modem. Any suggestion? Thanks.
Hi tarifiq and welcome to the BlackBerry Support Community Forums!
Can you send me a private message with your PIN so I can check this out for you?
Thanks
-CptS
Come follow your BlackBerry Technical Team on twitter! @BlackBerryHelp
Be sure to click Kudos! for those who have helped you.Click Solution? for posts that have solved your issue(s)! -
Screen sharing from iChat with Mountain Lion
I have not upgraded yet. I want to, but I am concerned that I will no longer have the ability to screen shard with my parents out of state.
I utilize iChat to control my parents computer, they live out of state and are not too computer savvy, this has been a life saver for me. Does Mountain Lion have a feature like this or is it gone with iChat? Is there a video chat option, or am I stuck with facetime???Hi,
Yes.
You have to use the same iChat ID as you do now. (AIM or Jabber based)
You have to (it's just easier) have the Buddy lists on View (by default they are not)
Yahoo was added for iChat 6 and is in Messages but does not do A/V chats
iMessage (the new Apple Services between Apple iOS devices and Macs with Mountain Lion) is also Text only.
You have to be able to do A/V Chats.
Speed-wise over the Internet this has to at least 128kbps (the same as a Video Chat on a 1-1 basis)
Another way to view this is that Messages is iChat with the iMessages ability shoehorned in and with a main interface change.
When you first start up Messages it tends to push you to enter an Apple ID to "register it" for the iMessage service.
If you migrate an older OS's User Account to the computer the System Preferences > Mail, Contacts and Calendars (New Preference Pane) picks up on email and other IDs which tends to mean they get added to Messages for you.
You can of course add Screen Names and IDs using the + Button in Messages menu > Preferences Accounts like you do in iChat.
This tends to mean the Messages Menu > Preferences > Accounts looks very familiar
The Window Menu can look a little different.
CMD + 0 brings up the Messages main window (A Chat Window that does tabbed Chats and an Interface all rolled into one)
Once you have other non iMessages Accounts then CMD + 1 brings up Buddies (A combined Buddy List). It is not listed until they are logged in.
They can be unlinked in the General Section of the Preferences at the "Gather all Accounts into one List" line.
Your "desktop" can then look like iChat used to:-
9:17 PM Sunday; February 10, 2013
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously -
Purchased a used macbook pro with Mountain Lion. My old Mac runs Snow Leopard is backed up to Time machine. How do I register the operating system to me and how do I use Time Machine to move my files to the new used computer?
If you look at the User Tips tab, you will find a write up on just this subject:
https://discussions.apple.com/docs/DOC-4053
The subject of buying/selling a Mac is quite complicated. Here is a guide to the steps involved. It is from the Seller's point of view, but easily read the other way too:
SELLING A MAC A
Internet Recovery, and Transferability of OS & iLife Apps
Selling an Old Mac:
• When selling an old Mac, the only OS that is legally transferable is the one that came preinstalled when the Mac was new. Selling a Mac with an upgraded OS isn't doing the new owner any favors. Attempting to do so will only result in headaches since the upgraded OS can't be registered by the new owner. If a clean install becomes necessary, they won't be able to do so and will be forced to install the original OS via Internet Recovery. Best to simply erase the drive and revert back to the original OS prior to selling any Mac.
• Additionally, upgrading the OS on a Mac you intend to sell means that you are leaving personally identifiable information on the Mac since the only way to upgrade the OS involves using your own AppleID to download the upgrade from the App Store. So there will be traces of your info and user account left behind. Again, best to erase the drive and revert to the original OS via Internet Recovery.
Internet Recovery:
• In the event that the OS has been upgraded to a newer version (i.e. Lion to Mountain Lion), Internet Recovery will offer the version of the OS that originally came with the Mac. So while booting to the Recovery Disk will show Mountain Lion as available for reinstall since that is the current version running, Internet Recovery, on the other hand, will only show Lion available since that was the OS shipped with that particular Mac.
• Though the Mac came with a particular version of Mac OS X, it appears that, when Internet Recovery is invoked, the most recent update of that version may be applied. (i.e. if the Mac originally came with 10.7.3, Internet Recovery may install a more recent update like 10.7.5)
iLife Apps:
• When the App Store is launched for the first time it will report that the iLife apps are available for the user to Accept under the Purchases section. The user will be required to enter their AppleID during the Acceptance process. From that point on the iLife apps will be tied to the AppleID used to Accept them. The user will be allowed to download the apps to other Macs they own if they wish using the same AppleID used to Accept them.
• Once Accepted on the new Mac, the iLife apps can not be transferred to any future owner when the Mac is sold. Attempting to use an AppleID after the apps have already been accepted using a different AppleID will result in the App Store reporting "These apps were already assigned to another Apple ID".
• It appears, however, that the iLife Apps do not automatically go to the first owner of the Mac. It's quite possible that the original owner, either by choice or neglect, never Accepted the iLife apps in the App Store. As a result, a future owner of the Mac may be able to successfully Accept the apps and retain them for themselves using their own AppleID. Bottom Line: Whoever Accepts the iLife apps first gets to keep them.
SELLING A MAC B
Follow these instructions step by step to prepare a Mac for sale:
Step One - Back up your data:
A. If you have any Virtual PCs shut them down. They cannot be in their "fast saved" state. They must be shut down from inside Windows.
B. Clone to an external drive using using Carbon Copy Cloner.
1. Open Carbon Copy Cloner.
2. Select the Source volume from the Select a source drop down menu on the left side.
3. Select the Destination volume from the Select a destination drop down menu on the right
side.
4. Click on the Clone button. If you are prompted about creating a clone of the Recovery HD be
sure to opt for that.
Destination means a freshly erased external backup drive. Source means the internal
startup drive.
Step Two - Prepare the machine for the new buyer:
1. De-authorize the computer in iTunes! De-authorize both iTunes and Audible accounts.
2, Remove any Open Firmware passwords or Firmware passwords.
3. Turn the brightness full up and volume nearly so.
4. Turn off File Vault, if enabled.
5. Disable iCloud, if enabled: See.What to do with iCloud before selling your computer
Step Three - Install a fresh OS:
A. Snow Leopard and earlier versions of OS X
1. Insert the original OS X install CD/DVD that came with your computer.
2. Restart the computer while holding down the C key to boot from the CD/DVD.
3. Select Disk Utility from the Utilities menu; repartition and reformat the internal hard drive.
Optionally, click on the Security button and set the Zero Data option to one-pass.
4. Install OS X.
5. Upon completion DO NOT restart the computer.
6. Shutdown the computer.
B. Lion and Mountain Lion (if pre-installed on the computer at purchase*)
Note: You will need an active Internet connection. I suggest using Ethernet if possible because
it is three times faster than wireless.
1. Restart the computer while holding down the COMMAND and R keys until the Mac OS X
Utilities window appears.
2. Select Disk Utility from the Mac OS X Utilities window and click on the Continue button.
3. After DU loads select your startup volume (usually Macintosh HD) from the left side list. Click
on the Erase tab in the DU main window.
4. Set the format type to Mac OS Extended (Journaled.) Optionally, click on the Security button
and set the Zero Data option to one-pass.
5. Click on the Erase button and wait until the process has completed.
6. Quit DU and return to the Mac OS X Utilities window.
7. Select Reinstall Lion/Mountain Lion and click on the Install button.
8. Upon completion shutdown the computer.
*If your computer came with Lion or Mountain Lion pre-installed then you are entitled to transfer your license once. If you purchased Lion or Mountain Lion from the App Store then you cannot transfer your license to another party. In the case of the latter you should install the original version of OS X that came with your computer. You need to repartition the hard drive as well as reformat it; this will assure that the Recovery HD partition is removed. See Step Three above. You may verify these requirements by reviewing your OS X Software License.
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