Archlinux & iMac - can't boot after deleting rEFLt

Hello,
I havent used Linux for about 4month (Got to an iMac through work). But since OSX really annoyed me I wanted to install Archlinux again.
Tried several Tutorial for Mac installation, ended up with a blank HDD and tried arch only after several tries with OSX.
Accidently deleted rELft (Or however its called) now I can install everything, but I dont know how to boot.
I just get a blank white screen, and can boot cd or recovery mode etc. But I have no idea how to boot my Archlinux System, everything I tried failed or broke even more.
I really really hope someone here can help and explain me how I can boot Archlinux.
My partition table now consits out of 2 Partitions, root and swap.
I Also changed my Layout to MBR.
Last edited by jasonwryan (2012-10-21 20:02:28)

I am far from an expert on how to install properly on a mac. But I'm pretty good at having linux improperly installed on two macs.
If you want a smooth quick efi-based boot on your mac, stop reading here and wait for better input. If you just want to boot into arch, however, you *can* follow all the installation guides ignoring everything mac specific and pretend your machine were like any PC. In the end everything will work ... with a very long boot.
This is due to - from what I understand - is mac's bios compatibility mode. When I boot up one of my macs (single boot to arch, no refit, no uefi, no efi of any sort) I get the white/gray screen for about a minute. Then it falls back to bios compatability mode, detects the boot flag on the disk, and starts up my boot loader (grub-legacy on one, syslinux on the other). From there everything works fine.
Have you tried waiting at that white/grey screen for a while? I've read the delay should only be 30 seconds, but on my macbook it is almost 2 minutes, consistently.

Similar Messages

For Those Who Can't Boot After Upgrading To 10.5.6

For Those Who Can't Boot After Upgrading To 10.5.6
(and i am one of those)
how is Apple supposed to make them able to install future fixes and updates
once they finally acknowledge and address this horrible bug?
will they send free bootable CDs with the updates to 10.5.6?

What "Boot ROM version" do you have (check in the system profiler under "Hardware")? If it's not MBP31.0070.B07 or MBP21.00A5.B08, then you will need to update your MacBook Pro's firmware. To do this, you might need to connect an external display and mouse/keyboard, and then run the computer with the lid closed to bypass the laptop's monitor. Then apply the firmware patch and reboot the system. This might also be doable via "Screen Sharing" if you have that enabled and have another mac handy.
The firmware update is here: http://www.apple.com/downloads/macosx/apple/firmware_hardware/macbookproefifirmw areupdate151.html
Message was edited by: Topher Kessler

Can't restart to iMac 21.5" desktop after deleted Windows XP Partition...

Ok fellow Mac heads. If you could help me out here I would deeply appreciate it. I bought a brand spanking-new iMac 21.5" 3.06 GHz Intel Core 2 Duo about a month ago. I completely love it, but a week ago a friend of mine gave me a copy of Windows XP Professional and I thought it would be a great idea to try out BootCamp and partition out about 32 GB out of my 1 TB total HD and see what Windows looks like on my new iMac.
Well I ran though the instructions through BootCamp Assistant app, and all went well, Windows installed, and then I got a black (Dos-like) screen telling me that I had to press any key to continue and finalize the Windows install or press any key to escape. Well, there was not a key I could press that would do anything.
So I start freaking out. I end up holding down the "option" key and restarting. I boot to the Mac desktop instead of the Windows CD/disc in my optical drive still. So...I can...get to my iMac partition and desktop. So Then I completely and totally remove the partition and Windows through BootCamp Assistant app and one would think I am good to go.
The PROBLEM is...now if I hit "restart" on my iMac it takes me to a "black / blank screen with one small blinking curser" in the top (left) hand corner of my screen...and NOTHING...happens. And I can't boot back to my iMac desktop unless the original Windows XP disc is in the optical drive and I hold down the "option" key on my keyboard and then power-back up.
Can someone please shed some light on my situation and give any hints/suggestions/steps I can take to fix this issue? I would really, really...appreciate it. Many, many thanks to any/all of you out there.
Sincerely.
Smartmediaman (at) gmail (dot) com
<Edited by Host>

HI,
Try booting from your install disc and reformat the drive.
http://theappleblog.com/2009/08/27/snow-leopard-the-installation-process/
Carolyn

24" iMac Can't Boot OS X Install Discs

I have a 24" iMac (A1225). I can boot to non-Apple discs (utilities, Windows) and I can even install Windows without any problems. I can't boot to any OS X Install disc however. I have the original 10.5 discs, they don't boot. I have a 10.7 disc that does the same. It starts to boot and makes encouraging noises for a bit but eventually both discs spin down with the Apple logo and the spinning circle which stops.
Just for shiggles I tried to boot a couple of custom OSx86 discs (10.6.3 and 10.6.6). They both booted to the installer. 10.6.3 started installing (crashed half-way) but started to boot from the HDD after I restarted it (it didn't go anywhere of course, just the Apple logo). 10.6.6 finished installing but wouldn't boot after it restarted.
It seems like there's a hardware issue but the fact that I can boot non-Apple discs and even install Windows without issue makes me doubt that. I have also cleared the PRAM (Option-Command-PR) and ran a quick test in AHT (D) without issues.
Any suggestions on what I can check next?

I can try it again but I think I've left it for more than 10 minutes Also, as I said, the spinner stops and the DVD spins down. Thanks for the reply!

Weird screen pattern freezes iMac, can't boot from HD or DVD

I woke up today to find the screen of my iMac black with a sparse pattern of bright pixels on it. I wasn't able to power down holding the Power buton so I unplugged it and left it for a bit before plugging back in. I was then able reboot without any problems. Then a few hours latter a weird pattern appeared across my screen, kind of rolling, animated in spots as seen here:
I powered down, started it up and the screen had this pattern on it:
It froze during startup at the point shown in the photo with the Apple logo. I powered down, unplugged, plugged back in and then tried booting up from my Snow Leopard install disc. It also froze on the logo screen. Another attempt brought up the "You need to restart your computer…" message in different languages shown here:
I figured it was having a kernel panic so I did some searching around and followed instructions on The X Lab - Resolving Kernel Panics page and Apple's Kernel Panic Troubleshooting page. I unplugged everything but my mouse (wireless keyboard) and tried booting into Safe Mode. The screen still had the same pattern but it froze again during startup, the grey progress bar having disappeared.
I can't boot from my hard drive or from a DVD and the pattern is always on screen when I turn the iMac back on. I can't run Apple Hardware Test. I'm stuck but I'm wondering if anyone knows what the cause might be or has any suggestions on how to fix it or even get it to boot up somehow.
I have TechTool Pro and a large flash drive. I'm going to try creating a bootable USB drive with Snow Leopard on it from this backup computer and try to get TechTool Pro on it as well. I'll report back but I'd really appreciate any feedback on this problem.

Some things to report. First, the night before any of this happened, I noticed the fan was running when there wasn't really any reason for it. The computer was idle, no major tasks running. I'm wondering if perhaps the videocard overheated and is causing problems. Perhaps the temperature sensors are screwed up?
Today I got a USB keyboard hooked up and reset the PRAM. Still unable to boot but the pattern on the screen did change from the mess of b&w squigglies above to vertical bars as shown here:
Trying to boot normally or in Safe Mode both result in the spinning wheel freezing and halting startup.
I found powering down then gets weird. It's like it tries to turn on again but can't after a second. Or sometimes it will and the mouse lights up, I can hear the optical drive but the screen stays dark. At that point I need to unplug and try again.
I tried booting from Snow Leopard install DVD during one of these weird cycles and could hear it trying to access the optical drive but I don't believe it even got to the chime stage.
I attempted booting from the install DVD again after unplugging. No luck there but instead of a frozen spinning wheel, it brings up the "You need to restart message…". Other methods don't do this.
Still at a loss to find a reason for this but it appears to be a hardware problem, no doubt the video card based on the screen issues. Does any of this shed any light on what the problem is or (even better) how to fix it?

IMac won't boot after power outage

I got a power outage a couple of hours ago. And now my iMac won't boot. When I power it up, it gets pass the white screen with the apple logo. The screen than turns blue with a spinning cursor. The cursor spins for about 10-15 minutes and stops but the normal login screen never appear and it won't boot into the desktop either. I just got a blue screen.
I have boot into the install Disc1 and did the disk repair and premission repair but it didn't help.
Any idea?
Sidney

Oh man, what a disaster!
I tried to do an Archive and Install but the installation hanged at the end of disc 2 after running an iWeb script (according to the install log) with about one minute left. I have waited for two hours but it just hanged there with all the drives spin down.
To make the problem worse. There was no way to quit the install at that point because all the menu items were disabled. The only way out was to power off. But when I powered it back on, it booted right into install directly asking for the disc 2. If I put the disc in it will install again and hang at the same spot.
Disc 2 contains iLife. I know Apple wanted to make things simple but why can't they give me an option to skip it? After all, iLife was already installed.
I finally got it working by booting from disc 1 and did a clean install. It took me all night to re-download all the updates and reinstall many applications. Fortunately, I have my address book, calendar, and most of my works backed up to .Mac so it wasn't a total lost.
On the bright side. Now my iMac is working better than before. I used to have problem getting auto sleep to work but now it works perfectly. Safari also had problem accessing charts (but Camino was fine) in a few web sites like schwab.com. Now everything works.
Lenn and David. Thanks for all your helps.
Now I am looking for a better backup solution so that the recovery won't be this painful if disaster strikes again. Any suggestions?
Sidney

IMac won't boot after iTunes Match - Get diskos2 i/o error. Help!

So after almost 24 straigth hours up uploading songs to iTunes Match, I woke up this morning and my iMac wouldn't boot. Gets stuck on the gray screen with the apple logo. I booted in verbose mode keep getting a "diskos2 i/o error." With a little googling some people say it's a bad sector and to erase and reinstall Lion others say it's a failing hard drive. Disk Utlity in Recovery Mode says the drive is ok. Any thoughts out there on what I should do? Thanks!

I am having the same problem. The machine loads just to the point when it says "Loading Mac OSX", then its non responsive for hours. The keyboard and mouse still work, but it won't move past that point.
When I try to repair the disk, it gives me an error message indicating that the disk cannot be repaired. I am bad at backing up my files, so I want to avoid a fresh reinstallation.
The worst part is I had just purchased Disk Warrior, and that won't boot up.
If no solutions are found, does anyone know a way that to initiate the computer in disk mode, so I can hook up another Mac to it, and save all the files?
-alfredo

My iMac can't boot Windows 7 From USB while my Macbook Pro can do it

I install Windows 7 64 bit and rEFIt into a USB hard disk and hope to boot from my iMac 27" (2010 Mid). However, it shows that no boot deivce is found.
If I plug the SAME disk to my Macbook Pro 17" (2009 Mid), it can boot Windows 7 without any problem.
I tried with Linux and get same result, iMac says no boot device while my Macbook Pro can boot it without problem.
I tried experiment for weeks and still can't get iMac work.
I think it is very abnormal and I wonder if someone can tell me how to fix it or any directory to solve this problem.

My iMac runs snow leopard and my MacBook pro runs Lion. Both of them are updated with latest updated. I just get one external USB hard disk with Windows 7 32 bit installed and magically, my iMac can boot it from rEFIt. However, I don't know what makes it works. I tried to make same configuration, software and steps on other USB hard disks for hundreds times but I can repeat it again. All other attempt can make USB hard disk boot on MacBook Pro but not iMac only.

Can't Boot After New HD + Time Machine Restore

So a couple days ago my 27" iMac running Snow Leopard started making some weird noises and stalling out. Annoyed, I talked for a couple hours with apple tech support which eventually lead me to run an Apple Hardware Test. This test returned the error
"Alert! Apple Hardware Test has detected an error.
4HDD/11/40000000 SATA(0,0)"
I scheduled an appointment at the Genius Bar, and they replaced the hard drive.
After that I got it home and did a System restore from my time machine backup. It finished fine, but when I restarted it got stuck on the grey apple screen with the spinning dial thing.
I called apple back and they had me do a couple things like repair disk, verify disk, and one person had me reboot into this command line mode and type some stuff in. Nothing worked. After that They had me try to reinstall the OS first from archive, and next by erasing the hard drive and doing it. Both times the install fails with a big yellow exclamation point saying that it couldn't install support files and the OS couldn't be installed.
Any ideas how to fix this?
I'm currently trying to restore from my time machine backup again, but I'm not hopeful.

Here's what I got - apologies for any formatting peculiarities.
The problem: 10.6.6 mac won't boot after time machine restore to disk.
Further symptoms: Booting with Command-v shows several errors: usually blued and loginwindow collapse with errors from launchd. Errors will be of the style "dyld: Symbol not found: CSSMOID_APPLE_TP_MACAPPSTORERECEIPT" and other CommerceKit / CommerceCore framework errors.
A solution: Your Framework Security library may be an older version (possible cause with Time Machine below). The easiest way to fix this is to find another, working 10.6.6 Mac, and update the Security library on the broken machine.
Identifying if you're affected:
1) Boot the broken machine into "target" mode - hold "Command-t" during boot until the [Firewire|http://itunesu.utah.edu/terms/images/Firewire_Icon.png] icon appears.
2) Connect the broken machine to the working 10.6.6 machine with a firewire cable.
3) On the working machine, the disk of the broken machine should mount.
4) Open Terminal
5) Run "ls /Volumes" - the name of disk you mounted should be there (in this example, we'll use "Macintosh HD".)
6) Typing in the path of the broken machine, run:
<pre>
nm /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security | grep random_fd | cut -d. -f2
</pre>
(this does a dump of the library, looking for the version value)
If this comes back with the value 22457 (or less?), your Mac is not booting because it does not have the updated version of the Security library, which is required in 10.6.6 since Snow Leopard added the Appstore / Commerce framework.
Fixing if you're affected:
1) First, make sure the working 10.6.6 Mac has a correct version of the framework:
<pre>
nm /System/Library/Frameworks/Security.framework/Versions/A/Security | grep random_fd | cut -d. -f2
</pre>
For 10.6.6, this should be at least "22458"
2) *Be extremely careful at this point* - Make sure on the mounted disk (not the machine you are working on!) run the following
<pre></pre>
2a) Make a backup of the broken library
<pre>
mkdir /Volumes/Macintosh HD/savedLibrary
cp /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security /Volumes/Macintosh HD/savedLibrary
</pre>
2b) Copy the working version over the non-working version:
<pre>
cp /System/Library/Frameworks/Security.framework/Versions/A/Security /Volumes/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security
</pre>
3) Eject the mounted disk from the working Mac, disconnect the firewire cable, and reboot the "broken" Mac. It should come up.
If it doesn't, you have problem(s) that are probably outside the scope of this. I'd also suggest restoring your original security library that you saved off.
Suspected cause:
It appears that Time Machine never recorded the change to the Security library after the update. If the library hadn't changed, the machine should have failed to boot like it did after restore the moment a 10.6.6 update was applied.
Inspecting the contents of my Time Machine backups before and after updating shows that Time Machine never updated the Security Framework library - why is still not 100% determined, but restoring from it is definitely broken. Combing through the backup databases on my Time Machine disk:
(I upgraded to 10.6.6 on January 6)
<pre>
for name in 2010-12-30-093337 2011*
do
echo -n "In backup on ${name}, version of Security library is: "
nm "${name}/Macintosh HD/System/Library/Frameworks/Security.framework/Versions/A/Security" | grep random_fd | cut -d. -f2
done
</pre>
In backup on 2010-12-30-093337, version of Security library is: 22457
In backup on 2011-01-04-100707, version of Security library is: 22457
In backup on 2011-01-05-082402, version of Security library is: 22457
In backup on 2011-01-06-092846, version of Security library is: 22457
In backup on 2011-01-07-094827, version of Security library is: 22457
In backup on 2011-01-10-093559, version of Security library is: 22457
In backup on 2011-01-11-110542, version of Security library is: 22457
In backup on 2011-01-12-094137, version of Security library is: 22457
In backup on 2011-01-13-103238, version of Security library is: 22457
In backup on 2011-01-14-113145, version of Security library is: 22457
In backup on 2011-01-18-112856, version of Security library is: 22457
In backup on 2011-01-20-114953, version of Security library is: 22457
In backup on 2011-01-21-103642, version of Security library is: 22457
In backup on 2011-01-24-102321, version of Security library is: 22457
In backup on 2011-01-27-002508, version of Security library is: 22457
In backup on 2011-01-27-011931, version of Security library is: 22457
In backup on 2011-01-27-104406, version of Security library is: 22457
In backup on 2011-01-27-114322, version of Security library is: 22457
In backup on 2011-01-27-123928, version of Security library is: 22457
In backup on 2011-01-27-134523, version of Security library is: 22457

Can't boot after system update: unknown filesystem type

After running a system update, including updating the kernel, I can't boot to the new kernel.
On booting, grub loads the kernel image, runs/loads udev, but then fails to mount the root partition with error:
mount: unknown filesystem type 'ext4'
I have tried reinstalling the 'linux' package via packman several times, also trying the --recursive argument to make sure all my dependencies were there, and after days of googling and tweaking my system, I'm at a loss.
Thank goodness I happened to keep a spare kernel laying around in /boot.
Thanks in advance.
Last edited by jackrabbit (2012-03-22 23:25:28)

The OP can read their partition initially though, it's only after udev that they can't.
Also, try adding "rootfstype=ext4" to your grub kernel line. Is your /boot on a separate partition or part of your / partition?

Imac won't boot after 10.6.8 update

Not sure where to start with this...
Just tried to boot after the latest 10.6.8 update and have the grey screen with the spinning disk.

I would suggest that you do the following as a start:
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.
If the drive is OK then download the Mac OS X 10.6.8 Update Combo installer and reinstall the update. See if that resolves your problem.
If the above does not fix the problem then you will need 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/.

Can't boot after update, getting "microcode: failed to load" error

After restarting my computer, it's no longer able to boot, and just prints a continuous stream of errors. The first error it gives is "microcode: failed to load", and I looked it up and found that I should just have to install amd-ucode. Easy enough, except I can't boot. I tried booting into the latest live-usb image, and after connecting to the internet, mounting the partition to /mnt, and running
# arch-chroot /mnt pacman -S amd-ucode
I get the following error
error: amd-ucode: signature from "Allan McRae <[email protected]>" is invalid
error: failed to commit transaction (invalid or corrupted package (PGP signature))
Errors occurred, no packages were upgraded.
I'm not very familiar with how chrooting works, especially not arch-chroot, so I don't trust myself to fix the problem without breaking something. I was thinking of just putting the package on a flashdrive and installing it with
# arch-chroot /mnt pacman -U amd-ucode-package-name
Should I do it this way or am I misunderstanding how arch-chroot works?
By the way, this is an issue with my desktop. startx stopped working on my laptop right before I went to use my desktop and rebooted it, so after this issue is fixed I'll be making another thread about my laptop >_> Any help is much appreciated.

Ok, so I managed to install amd-ucode with pacstrap. That got rid of the microcode error, but I'm still getting
/dev/sdc1 contains a filesystem with errors. Forcing check
And then it just repeats the error message
[60.50342] ata5.00: failed command: READ FPDMA QUEUED
[60.51345] ata5.00: cmd 60/<long number that's formatted similarly to a MAC address>/40 tag 0 ncq 131072 in
[60.51743] res 40/<the same number>/40 Emask 0x10 (ATA bus error)
[60.62421] ata5.00: status: { DRDY }
The numbers on the left just keep counting up, but the repeating error message stays mostly the same. What's odd about this error is that the disc it says it has a problem with isn't even the disc with the OS on it. When I have time I'm going to try physically removing /dev/sdc from my computer to see if the error stops.
Oh and there won't be any thread about my laptop issues. Turns out I filled my whole HDD, which was causing startx to fail.

Can't boot after 10.6.6 update

I see lots of new complaints here about system slowness, apps not working, etc., but after updating my MacBook Pro from 10.6.5 to 10.6.6, I can no longer boot into OS X.
If I do a verbose boot, I see some complaints regarding VMware's vmnet adapter:
vmnet: Invalidating peer info for hub: 0, port: 0
vmnet: VNetUser-IfFree: freeing user If at [mem-address]
... and then it goes no further. I have let this run for over an hour without any progress.
I've also booted the install DVD and repaired permissions and the disk, but that didn't help.
I've also booted via "safe mode" (Shift on boot), which showed an additional progress bar at the bottom of the boot screen for a while and then went back to the spinning progress circle. This too has run for over an hour now.
Don't know what else to try at this point. Of course, I had written a presentation in Keynote that is due in an hour, and this is my only Mac.

Sorry ... what?!? I'm not sure from where you made this assumption, but of course I keep data back-ups; and I'm not sure what you classify as a "production machine", but I certainly don't consider a laptop a production system (again: my data is safely backed up).
If you have a presentation due in an hour, which is what your post said, surely you anticipate the ability to access that presentation in an hour, and not be beset by issues resulting from updates, hardware issues, etc, I would classify that as a production machine, because time sensitive access is a necessity. One should not be shooting oneself in the foot by modifying what is working until one is absolutely certain that it won't affect their ability to access time sensitive data. Since you are backed up, the issue presented here, is one of a machine which may need directory repair, or to be cleaned up so it isn't too full that the machine can't boot, or one of not having compatible firmware or drivers with the new operating system. Whichever, a recovery of a backup would allow one to continue as if no update had happened, it would also allow one to recover to another hard drive if the hard drive is dying, it would also allow one if the directory is too badly munged to recover data to another hard drive, but whichever the issue, you have within your power the ability to recover from this situation. To repair the directory I give directions here*:
http://www.macmaps.com/directoryfaq.html
If it can't be repaired, that's when you have to assume the drive may be dying.
If it can be repaired, but won't boot, that's when you assume that some driver was installed that won't work with the new operating system, and you'll have to downgrade.
Whichever the scenario, your backup saves you a lot of trouble.
- * Links to my pages may give me compensation. I merely have to say this whenever posting links to my site. That's just a given because of the terms of this forum.

White iMac will not boot after 10.6.8 upgrade

I downloaded the 10.6.8 upgrade last night. This morning, the white plastic iMac will not boot.
I have tried evey known keyboard option.
I have tried booting from the snow leopard dvd.
I have zapped the pram.
Nothing!
Please, any help would be great.

We bought 2 iMac's 27inch with i7 Quad-core. Did the update a couple of hours ago. My Mac asked to reboot after update, but i didn't accept and worked with iTunes for a while. Then rebooted manually. After reboot it took about 15 minutes to reboot (light-blue screen with nothing on it, not even a mouse). My Wife also did the update of 10.6.8 and rebooted when asked. Her iMac also took 15 minutes to reboot, bus update was unsuccesful! So did update again and then denied reboot and rebooted manually! (Apple-logo and then choose "restart").
When we did that, iMac was very fast and updateproblem was solved! So deny reboot and reboot manually and problems are over. Same deal with 2 brandnew iMac. I'm guessing this is an issue. To much of a coincidence for me!

IMac fails to boot after restart. Shows folder icon with ?

I have managead to boot up from start up disc previously. I did a hardward scan and it stated my hardware was fine. It is my understanding the folder icon with the "?" means that the iMac can't find the OS. I thought maybe I had a corrupted spot on my HD where the OS is, and tried to re-install, and I wasn't allowed to re-install. Do you think my HD is bad, or maybe I have a virus? I'm ashamed to admit that my anti-virus software had been expired for a bit. I should also mention I am running OSX Tiger. I know, bad Apple geek, but it more than served my needs. This is last ditched effort before I take it in for service.

Highly unlikely it's a virus.
The question mark on startup can mean several things. One the hard drive is failing or failed or your Mac cannot locate a System Folder to boot from.
Try starting up while holding down the Option key. If there's a volume to boot from you'll see the Startup Manager window where you can select the startup disk to restart from.
A flashing question mark appears when you start your Mac
and tried to re-install, and I wasn't allowed to re-install.
Not a good sign.

Archlinux & iMac - can't boot after deleting rEFLt

Similar Messages

Maybe you are looking for