HT1751 imac does not start becouse cd i burn fast need help

imac does not start becouse cd i burn fast need help

andres:
Running Repair Disk from your install disk as suggested by neuroanatomist is the best first step. I have outlined the procedure in detail below, with suggestions for what to do if DU reports errors it cannot repair:
Repair Disk
Insert Installer disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu (Panther and earlier) or Utilities menu (Tiger) and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
(Check S.M.A.R.T Status of HDD at the bottom of right panel, and report if it says anything but Verified)
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
If DU reports errors it cannot repair you will need to use a utility like Tech Tool Pro or Disk Warrior
What’s a kernel panic may help you identify the black screen you saw earlier. If it does, post back and let us know.
Good luck.
cornelius

Similar Messages

My imac does not start anymore (stops at the screen with the apple and a rotating circle). An idea what I could try to make it start again?

My Imac does not start anymore.
==> What I have already done:
1) I tried with the tigger dvd to reinstall. It didn't succeed.
2) Via the single mode, when starting I got the message "disk0s2: I/0 error" several times. After that I got "Root device is mounted read-only"
3) Nevertheless, I tried the "fsck -yf" function. After checking "Journal HFS Plus volume", "extends overflow file", "catalog file"... and invalid record count
==> /dev/rdisk0s2 (hfs) EXITED WITH SIGNAL 8
Can someone advices me? I red on the internet I could reformat the disk... loosing all the data I didn't backed up. How am I suppose to reformat?
Thanks in advance,
Fred

Reset the SMC: http://support.apple.com/kb/HT3964
Reset the PRAM: http://docs.info.apple.com/article.html?path=Mac/10.6/en/26871.html
Restart the computer while holding down your mouse button which if you hold it down long enough (5 minutes at most) should eject the disk
If the disk still doesn't come out at that point then you need hardware evaluation;
contact Apple, contact an Apple Authorized Service Provider, or make an appointment with an Apple Retail Store.

My Imac does not start and make a terrible noise like an alert.

Please help me, my Imac does not start and make a terrible noise like an alert when try to start ,the Imac keep a grey screen when try to start and keep there.

Sounds like it is time to take it to an Apple Store or AASP to be serviced. You can also try troubleshooting using Apple's Gray screen appears during startup instructions.

My iMac does not start.

My iMac does not start. When I turn it on, it stays loading in the half and doesn't continue. Some days before I had updated my iMac to Yosemite 10.10. Everything was ok but yesterday I decided tu reboot it and when it was turning on this happened, it kept stuck at the middle of the bar. I have the latest model of MacBook Air '13.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
To restart an unresponsive computer, press and hold the power button for a few seconds until the power shuts off, then release, wait a few more seconds, and press it again briefly.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.” The article refers to starting up from a DVD, but the procedure in Recovery mode is the same. You don't need a DVD if you're running OS X 10.7 or later.
b. If Step 1a fails because of disk errors, and no other Mac is available, then you may be able to salvage some of your files by copying them in the Finder. If you already have an external drive with OS X installed, start up from it. Otherwise, if you have Internet access, follow the instructions on this page to prepare the external drive and install OS X on it. You'll use the Recovery installer, rather than downloading it from the App Store.
c. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
d. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use the technique in Step 1b, 1c, or 1d to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If a desktop Mac hangs at a plain gray screen with a movable cursor, the keyboard may not be recognized. Press and hold the button on the side of an Apple wireless keyboard to make it discoverable. If need be, replace or recharge the batteries. If you're using a USB keyboard connected to a hub, connect it to a built-in port.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 11. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
If the startup device is an aftermarket SSD, it may need a firmware update and/or a forced "garbage collection." Instructions for doing this with a Crucial-branded SSD were posted here. Some of those instructions may apply to other brands of SSD, but you should check with the vendor's tech support.
Step 10
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 11
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 12
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

My imac does not start up

My imac does not start up. It shows a white page with apple sign .

Resetting NVRAM / PRAM
Shut down your Mac.
Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

My iMac does not start up as usual. Start up disk is full message and I do not get normal desk top. Please can you help? Thanks

My iMac does not start up as usual. I now get a ' start up disk is full. You need to make space available on your start up disk by deleting files' message.
I am able to key my log on password however I just get the purple galaxy screen with no desktop.
If I try to use the keyboard I get a tone when pressing the keys.
Has worked perfectly well up until I got this dusk full message.
Can anyone help please. Thanks

Your going to have to follow the Data Recovery Efforts page here to be able to access your drive and remove files without booting the computer.
You can't open the iMac so you will need OS X booted from a external drive or via Firewire Target Disk Mode using another Mac.
https://discussions.apple.com/docs/DOC-3172
I would concentrate on Movies as this is a big source of large files to free up room.
Read Storage Drive here
https://discussions.apple.com/docs/DOC-3045
If you not handy with computers, your going to have to hire a local service or provide the info above to someone you know who can, it's not easy.

My imac does not start and asks for bootdisk

i bought a new imac and connected it with internet to upgrade the drivers. Power went off... and now imac does not start.
When it starts it asks for the boot disk and no boot disk came up with my mac.
Please help how can i reinstall mac.
thanks

None of the options work. I press the power on button keeping the option and R button pressed but the only option that appears is
First blank white screen appears as soon as i power on (option R is pressed) and then the following message
No bootable Device -- Insert boot disk and press any key
(Ethernet cable is connected but it does not go for internet recovery either)
No more activity.
Also if you can guide from where I can download OS X Lion for reinstalling it to the imac, please.
Does every mac come with a restore/bootable disk or not? We ordered two macs but did not get any disk with any of them.
Anxiously waiting for help....

IMac does not start up anymore

After 3 Days of random freezing, now it does not start up anymore only gives me a repeating sound, but screen stays black. What can I do ?

You can take it into the Apple Store or a local ASAP for repair.

IMac does not start up

Time to time It does not start up and the screem sow a message to shut down the computer and to start again.
The system check up, inform that there is aproblem in the "bits bolume" and it need a small repair.
I would like to recive some help and orientation to resolve.
Thanks in advenced
I look forward hearing for informations.

andres:
Running Repair Disk from your install disk as suggested by neuroanatomist is the best first step. I have outlined the procedure in detail below, with suggestions for what to do if DU reports errors it cannot repair:
Repair Disk
Insert Installer disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu (Panther and earlier) or Utilities menu (Tiger) and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
(Check S.M.A.R.T Status of HDD at the bottom of right panel, and report if it says anything but Verified)
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
If DU reports errors it cannot repair you will need to use a utility like Tech Tool Pro or Disk Warrior
What’s a kernel panic may help you identify the black screen you saw earlier. If it does, post back and let us know.
Good luck.
cornelius

HT201412 my phone restore but does not starts it shows only apple logo please help me

HI
My i phone restore but does not start it shows only apple logo & charging it was not connect to i tune please help me

See your other post on this Topic...
https://discussions.apple.com/message/22315227#22315227

IMac does not start-up after recovery screen.

My iMac (late 2008), does not continue to start-up.
After switch-0n, I get a grey screen with Apple loge, a 'busy' indicator and a 'progress bar', which fills slowly.
When the 'progress bar' is completed, the iMac switch-off.
When started again, the same repeats it self.
Any keyboard combination does not work.
What can I do..?
Kind regards
Stephan Schalkx
Almere - Netherlands

Hello Stephan
Start with booting up to the Recovery HD and then use Disk Utility to verify the hard drive. Check out the first article to go through those steps to sort you out. If for some reason that it checks out and you are still having issues booting up, then you will want to reinstall the operating system. I have provided the steps to reinstall OS X Mavericks, but the steps are the same for OS X Lion and Mountain Lion.
Also if you can somehow back up before you go through the troubleshooting to make sure that you have a safe copy of your date.
Resolve startup issues and perform disk maintenance with Disk Utility and fsck
http://support.apple.com/kb/ts1417
OS X Mavericks: Reinstall OS X
http://support.apple.com/kb/ph13871
Regards,
-Norm G.

IPhone6 connect to iMac does not start iTunes

When I connect iPhone6 to iMac, iTunes should start automatically, but it does not.

Hello SADON2,
Thanks for using Apple Support Communities.
If iTunes is not opening automatically when you plug in your iPhone to your Mac, then please enable the option for this to occur in your syncing preferences within iTunes that appear when your iPhone is plugged in.
Sync your iPhone, iPad, and iPod with iTunes using USB - Apple Support
Have a great weekend,
Alex H.

Imac does not start on upgrading to v10.9.1

I chose to upgrade my iMac to 10.9.1 and the ugrade has failed and the machine just does not boot up. It shows a progress bar on a white screen and at the end of it, just go to sleep. Can someone help ?

OS X v10.6- Gray progress bar appears under Apple logo during startup
Install or Reinstall Mavericks or Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
OS X Mavericks- Erase and reinstall OS X
OS X Mountain Lion- Erase and reinstall OS X
Note: You will need an active Internet connection. I suggest using Ethernet if possible
because it is three times faster than wireless.

Imac does not start after I deleted login plist

I had a popup message that my imac was not able to connect to my wifes computer. After reading on this forum that others had the same issue and it had been resolved by deleting com.apple.login...plist .... I did the same.
Now my computer is not starting at all. It shows the apple sign, gives the start sound and then white screen with rotating sign. Here it remains. If I could open the computer somehow I could restore that file because I didn't empty trash.
Considering that imac has the wireless keyboard I thing that it doesn't connect to it any more because all the methods to boot it in safe mode didn't make any difference.
Any suggestions?

I still don't understand why it won't boot, but if it's still in the Trash, as you say, you might try the following.
The following applies only if the loginwindow.plist you trashed was found in the HD Library, not your User LIbrary.,
Boot into single user mode. Hold down Cmd-s at the startup chime. You will get a screen with text only.
At the prompt, which will end in root# enter the following. (For this, the fsck -y ,keep entering that and hitting return until you get a message "The volume***** appears to be OK" )
NOTE:If you get
fsck_hfs: Volume is journaled. No checking performed.
fsck_hfs: Use the -f option to force checking.
Then just go ahead and enter the next command. Don't wait until you get "The volume*******appears to be OK."
fsck -y
next enter and hit return
mount -uw /
Then, finally, enter
mv /Users/"yourusername"/.Trash/Library/Preferences/com.apple.loginwindow.plist /Library/Preferences/
(IMPORTANT: In the above command, there is a space after /com.apple.loginwindow.plist and before /Library/Preferences/)
Only put yourusername in quotes if it has spaces, otherwise the quotes are not needed.
When the root# prompt returns, enter reboot and hit return. (And pray)
Note: all of this, except for your user name, which will depend on what that is, must be entered precisely as given, noting case and all spaces or lack of. After hitting return for each of the given command wait until you get a new prompt.
Message was edited by: WZZZ

After updating from SL to Lion my iMac does not start

Hi,
after I updated from SL to Lion, my iMac did not boot correctly. It came to the apple and the turning wheel, or at the best up to the desktop and then the black screen > maschine was off. I repaired the HD, after 6-7 trials, I reached a very slow Lion environment, not satisfieying at all. I installed Lion again, no change. Now I can only use the iMac after star with shift key, i.e. protected mode.
Any idea what to do?
Rgds
flying_2000

Imagine calling to your Doctor and saying "I'm unwell. Please advice (sic)"? What would he say? I think he'd start by asking a for a whole lot more information, wouldn't he? So, same here.

HT1751 imac does not start becouse cd i burn fast need help

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