OS X Mavericks :: Gray Screen After Erasing Hard Drive And Resetting NVRAM / PRAM
Jun 17, 2014
I have a mid-2011 iMac (with Mavericks OS), and am doing a clean install before giving my computer to a relative. I performed a secure erase of my entire harddrive (using disk utility), reset the NVRAM / PRAM (but it only chimes once even after I tried several times), and now I get the grey screen even when I try to boot from CD, safe boot, or any other commands. I can't even get back into the disk utility.
On a side note, I have the install DVD in the DVD drive and I can't get that out.
Info:
iMac, OS X Mavericks (10.9)
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Jun 5, 2012
Is it ok to have a PRAM and NVRAM reset two times a week?
Info:
MacBook Air, Mac OS X (10.7.4)
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Sep 3, 2010
I have a 2006 Mac Pro and recently my firewire ports stopped working (front and back). I did a little searching around found a suggestion to try resetting the Mac's PRAM and NVRAM by holding the Cmd-Option-P-R keys down while booting. I have tried this numerous times and it doesn't seem to do anything (i.e. the Mac just loads OS X and doesn't re-boot like the instructions say). I'm using a MS Wireless Comfort Keyboard for Mac. Can you reset using a wireless keyboard?
Since I wasn't making any progress with that, I was toying with bringing in the Mac to a genius bar. Never having used the genius bar before - how does it work? Do I bring the computer in and leave it with them? Do they work on it while I'm there? I don't have an extended warranty so do they charge time and materials? I'm wondering if that might get awfully expensive and if I ought to just buy a PCI-X firewire card instead.
Any suggestions?
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Aug 9, 2009
I have already covered these steps:1. I have tried a safe boot. 2. I have tried to reset the NVRAM and the PRAM.3. I have tried to reinstall OSX from the Install Disk.4. I have tried to repair the HD and tried to repair permissions using the Disk Utility. he issue started out as the flashing Apple/Question Mark Folder/"No" sign. I attempted to follow the steps on the Mac Support Forums (ones listed above) and the issue developed into the picture shown.
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Aug 21, 2014
I recently had to erase my hard drive because it failed and my computer wouldn't start up. When I try to reinstall Mavericks it just goes back to disk utility and I still can't start up my computer.
Info:
iMac
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Feb 25, 2006
I have a G4 MDD Dual 1.42ghz, When I hold down the Command-Option-P-R keys during restart it doesnt do anything. It keeps going straight to the gray screen and starts up. I dont know what to do. Anyone know whats the problem? Also my computer cant wake up from sleep or even go to sleep all the way.
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Jan 8, 2011
My macbook pro won't boot past the grey screen, I've tried reseting PRam, running fsck from single user etc to no avail. All signs would point towards a hard disk failure, but the curious thing is that it sometimes mounts in disk utility when booting from the install CD, so theres a little life left in it yet! I have fairly recent backups of most of my files, but there are a couple I've been working on in the past few days that won't be backed up. So my question is this - is it possible to copy files from my mac HD onto a external drive through the terminal/disk utility while booting from the CD.
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Aug 29, 2014
I have never backed up my Macbook 2.1 duo before yesterday. While in the process of backing up I was using photoshop, and my computer froze. I waited 30 min and then decided to shut it down. When I tried to turn it on it will not boot-up, I only get the grey screen of death. I had just recently upgraded to Snow Leopard this week. I used an external DVD drive which seemed to cause issues. So I thought I might be able to use that to install a clean version on this busted drive, well nothing worked, tried holding option key, holding down the C key. I ordered another drive that says its compatible with my drive. Since the my mac doesnt seem to acknowledge my drive, I bought an external housing for my new internal. I want to format and load Snow leopard onto the new hard drive using my girl friends mac. then put in my macbook. I would like to know if this will work? how I need to format my drive in disk utility.. Is it possible that it is not my Hard Drive?
Another side note, I just upgraded my RAM from 1GB to 4GB on my Macbook 2.1, I did try and putting my old ram back in just incase that was the issue.
Info:
MacBook, iOS 6, 2.1 13" intel duo
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Feb 28, 2010
recently had a small USB issue, so I reset my PRAM which fixed it.Now every time I boot the PRAM will reset itself. This particularly annoying because:1) It takes longer to boot as it restarts again and again (sometimes 3-4 times).2) I have the boot volume set to 0 and when the PRAM is reset it will go back to default which isn't fun [and it loud].
3) I have verbose mode on and a PRAM reset removes that as well, so I need to do the 2-finger combo [which on the bluetooth keyboard doesn't work half the time].I can't seem to fix it. I've done all the usual things (ie: manual PRAM reset with 4-finger combo, SMC reset, reseating hardware, disconnection hardware) and I've also gone ahead and installed OS X on a new volume for testing. Nothing is working and this getting a little frustrating.I try not to restart my computer, but recently I've needed to it a couple times. Apple Support doesn't know what to do and they're reluctant to send a on-site tech because they're not sure what the issue is. They want me to take my computer to the Apple Store, but (1) I don't have a car, (2) it's windy and snowing like crazy outside so there is no way I'm walking a mile to the Apple Store carrying the Mac Pro by hand, and (3) even if it was sunny outside my computer weighs a lot.Anyone know what's going on here? The computer passes all hardware tests and disk scans reveal no bad sectors.
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Jun 20, 2014
I had my 2008 Mac Pro unpugged for a few days. When I turned it back on the USB ports weren't functioning. I can't reset the PRAM as my keyboard is not working.
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Nov 2, 2009
I have a February 2008 MBP and am having issues with keeping it asleep. I currently have it set up as a desktop connected to an external monitor, keyboard and Magic Mouse (along with a variety of other peripherals) and I've recently noticed this issue. I'm running 10.6.1, I have tried everything from resetting the PRAM, SMC and repairing disk permissions to even installing a clean copy of Snow Leopard and restoring from Time Machine backup.
For power management, I have it set to never sleep, since I manually set it to sleep and don't want it sleeping on me when in use. I also have Wake on LAN activity disabled. Yet when I set it to sleep, at approximately noon the next day it wakes up by itself. I've even turned off the Magic Mouse to make sure it wasn't being moved by vibration and waking up the Mac. I'm completely stumped!
For troubleshooting purposes, I've installed a clean copy of SL without restoring TM backup to see if it's a program that's causing this issue or if it's a problem with a peripheral. I've yet to check back on it as I'm at work, but I'm hoping it's just software related. I'm at a loss as to what to do.
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Apr 26, 2012
I used to reset the PRAM by restarting and holding alt+command+p+r My new iMac came with a wireless keyboard and this way of resetting is not working. Apparently the Mac starts before it hooks with the keyboard.
Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.3)
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Aug 3, 2010
What does everyone mean when they say this?
What does it do?
Basically, all the general information about it.. I've been reading people's problems and I see this all the time, and I'm totally confused on what it.
Also, what is PRAM? What does resetting it do?
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Aug 7, 2009
Man, what's up with this? Shut down on my early 2008 MacPro (10.5.7) takes forever! I've tried resetting the PRAM and it did this with earlier versions of Leopard as well. I've reinstalled the OS twice, changed hard drives and wish I could fix this.
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Apr 29, 2012
Firmware password will not reset. Resetting PRAM fails. Resetting NVRAM in Open Firmware fails. Resetting PMU fails.
Info:
MacBook Pro, Mac OS X (10.7.3), (MacBook pro 8,1)
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Sep 3, 2009
I've recently purchased a broken 1GHz Alum PowerBook G4 12", and the display isn't working. I have a total of two 12" PowerBook displays, and I've tested both. They've worked perfectly fine. Then I've tried reseting the PMU and PRAM, no luck, but they've attempted to work. Tried the Mini-DVI to VGA adapter with my display, still no luck. The keyboard, optical drive, and hard drive works as if it was booting, and there was always a clear chime, even when I've reset the PRAM and PMU (the beep sound when PRAM also attempted). I've inserted a Leopard install disk, and it sounded like it was working perfectly fine. Hopefully it's not a motherboard issue
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Mar 22, 2012
I have royally screwed up! I want to erase the hard drive on my Power Mac G4 to prepare it to go to my son. I thought I was doing it right, but had forgotten to put the energy saver on "never turn off" so the screen dims when I try to continue with the erasing. Tried to start over with an install disk in the tray. Now can't access the original disk.
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Apr 10, 2006
Im really close, well just about done on selling my powerbook and I want to erase my HD so I can give it to the buyer by "factory settings", especially by erasing all my keychain passwords.
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Mar 31, 2012
I have a 2007 white MacBook that I am going to be selling. I want to erase the hard drive. I have gone into utilities but it won't let me erase the h ard drive completely.
Info:
iPad, iOS 5.0.1
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Jul 12, 2009
so I got OS X Leopard. I had a copy of Windows Vista, and decided to try out the Boot Camp Assistant. Didn't have a problem partitioning the drives and installing Windows. However, I now find it entirely pointless to have Windows on my Mac being that I have a PC now. I tried doing it myself at first, and ended up erasing the Windows partition, and now I'm having troubles combining the drives into one. I saw something about running an uninstaller through the Boot Camp Assistant, but I think erasing the Windows partition ruined that for me. Whenever I try to use the BCA while the drive is mounted I get this error message: The startup disk cannot be partitioned or restored to a single partition. The startup disk must be formatted as a single Mac OS Extended (Journaled) volume or already partitioned by Boot Camp Assistant for installing Windows. When I unmount the Windows partition, I get THIS error message: Boot Camp Assistant cannot be used. This startup disk is not supported.
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Jan 21, 2009
Hi everyone, I have a big problem. Today, I noticed that my Macbook Pro was running a bit strangely, with some video being slow and stuff, so I restarted it while it was in Windows Vista through BootCamp. I came back about ten minutes later to see a black screen, and the computer still on. I don't know if it restarted or not. I tried hard resetting it countless times, and messing with the battery like letting it run dry and stuff, but whenever I keep turning it on, I hear the "dong" boot sound, but the screen doesn't turn on, ever.
No I'm wondering if a PRAM zap will help fix the problem, but I really don't want to lose the hard drive and the stuff I have on it. I have a TON of school and work files on there that I simply cannot afford to lose. Will a PRAM zap kill my Windows Vista hard drive or should I even go ahead with it? I really hope that I can fix this problem myself, because the nearest Apple Store (and Geek Squad place that supports Macs) is over 40 miles away, and I really need the stuff for school on Tuesday.
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Jun 14, 2012
After backing up my data and then swiping my hard drive using Disk Utility, my OS seems to have been uninstalled as well. Is there a way to recover the deleted information and go back to the last working configuration? I'm on a MBP IC2D 2.16 w/ Lion.
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Jun 24, 2014
After deleting about 500 emails and going to erase deleted messages the memory available on my hard drive did not change. Should it? Do emails not take up any memory?
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Jan 19, 2008
I have an external hard drive that I was previously using on PC, having attempted to use it on a Mac, it will not write to it. I've found that I have to format to FAT32, which I think i can just about manage (yes, im a girl) but my concern is, if i format through the MAC, will i then lose what's on the hard disk as the tab says 'erase'? I have a lot of images on the hard disk so am a little petrified! Any advice for this really basic question would be appreciated!
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Jun 20, 2014
I shut down the computer, and opened up screenflow and exited it. However the 30 gigs is still missing. I got an error saying out of space while I was recording a webcam and now the 30 gigs is gone. I only have 5 gigs of hd space left on my computer when it should be closer to 35 gigs left. I ran cleanmymac but that didn't find the missing hard-drive space.
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Aug 22, 2014
After the computer has been in sleep mode for a little while, when i try to wake up the computer, it turns to a cray scree, a loading bar appears and then it takes like 5 mins for the icons to appear and for the mouse to work!
Info:
iMac, OS X Mavericks (10.9.4), Stock mottle 21.5inch
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Sep 2, 2014
When I restart the mac with the command "reboot" of the finder. I have a gray screen and nothing more. If I use the command "Turn off" and I turn on the mac by the start button it works.
Mac pro : 10.9.4, 2x2,8 ghz DDR2 FB-DIMM
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Mar 17, 2012
I have a new imac. I was stuffing the web, tried to upload a picture, the website locked up, so I hard booted my iMac. Then when it came back on, and I get is the start up sound, and a gray screen, nothing else. Its been 5mins now!
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Jul 2, 2009
I think the hard drive in my Macbook (2007 Model) has died. My macbook froze and when I restarted I can hear an usual clicking noise and I only get a white screen with a grey folder icon and white question mark inside. Fortunately, I use super dooper to create a bootable clone of my hard drive as a back up. When I attach this and hold down the apple key I boot straight into the clone and the computer runs fine from the external hard drive. If I go to disk utility my computer can not locate the internal hard drive, nor if I go t sysyem prefs-startup disk. Should I assume its dead or could it be a connection problem. I don't have applecare so I'm willing to buy a new hard drive and swap it myself. However, this is making the assumption the hard drive is the culprit. Can anyone else diagnose this problem from the desrcitpion before I shell out on a new hard drive?
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Jul 11, 2010
A little while ago I build my own SATA drive using an enclosure from Addonics, and two 750GB Seagate drives. I had it connected with eSata to my Mac Book Pro 2.0 Core Duo, and using RAID 1 mirroring. The eSata card is a Wiebetech Express 34 card. Everything had been working fine and dandy, until one day I plugged the enclosure in, and I suddenly got the grey screen of death telling me to shut down my computer. After restarting, I tried plugging the drives in again, only to get the same thing. So after all manner of switching cables, eSata cards, and reinstalling drivers, I still had the same result. So I tried something else - I took out one of the Seagate drives and threw it in a Firewire 400 single enclosure made by Acomdata. After turning that drive on, I still got the same error message. I tried the other mirrored drive, and again, the same grey screen of death. So at this point I wondering if both my drives, with the exact same data on them, are completely corrupt. Neither one of them is making that terrible clicking sound that seems to happen to dying drives. But I can't fathom what happened to both drives that would cause such an error. I created a mirrored setup for the exact reason that if one drive failed, surely I would have the other one left. Can anyone shed some light on this situation? I am totally prepared to pay for data recovery on these drives, but it would really help to know what I'm dealing with here.
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