Imac wont boot only shows flashing question mark folder (long)

Imac 21.5 late 2009 with no upgrades.
Had previously turned on bootcamp inadvertently without installing Windows OS. On shutdown accidently picked start Windown on next startup and since has only shown flashing question mark.
Tried to boot to single user mode, safe mode or verbose mode without success.
Could not find orginal OS disk that came with computer so used OS disk from a 13' Macbook pro (mid 2009). Would boot to OS installer but got error when it tried to install. Was able to get past this and use Disk Utility and did repair permisions and repair disk without change in result.
Tried rest PRAM and NVRAM without success.
Then found that the OS disk from the Macbook was a different build and finally found OSX installation disk that came with computer and will boot to MAC OSX installer. Did repair disk permision and repair disk without change.
Reloaded OSX without change.
With disk in will boot to single user or verbose mode but I dont know enough to know what to fix from there. I am assuming somehow boot files have become corrupt.
Any help? Thanks

I didn't read your complete post however by the subject line alone it appears your computer cannot locate it's startup volume per: http://support.apple.com/kb/TS1440
The easiest way to remedy that is to restart while holding down the C key on your keyboard. After the computer has restarted then go to System Preferences - Startup Disk and choose the internal HD and then click restart to test.
Roger

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Mac mini (late 2012) when booting shows flashing question mark folder

Hello, so after installing software update to my mac mini *late 2012* it froze for few mins so then I rebooted it and now it wont boot it shows flashing question mark folder, I can't use the boot buttons because it asks me for a frimware password and I dont remember setting one up so how can I fix it .

If you need to reset the firmware PW see:
http://reviews.cnet.com/8301-13727_7-57542601-263/efi-firmware-protection-locks- down-newer-macs/

Flashing Question mark Folder and clicking - no start up.

Dear Mac Users,
I've already got some info on the above, but my 3.5year old G5 iMac wont get past the flashing question mark folder icon. It can't find the start-up drive. The think the hard drive is dead - if I start up from external HD it's OK and/or Tiger CD - but the mac's HD is nowhere to be seen on any disk utility.
Just bought Disk Warrior - that wont see the iMac HDrive either - so unless anyone has got a fix, it looks like the thing will be dumped or I get a new HD. Are these easy to buy and fit? It's a Rev A model, (the buzzy first edition). I haven't got all my files backed up, just the key ones, which are now on a new alum iMac. Or I could run it off an external drive (noisy, though).
I had been moving the G5 around a lot (switched off) before it went belly up - could this be a cause?
Maybe it'd been feeling left out, with the new 24in installed.
Hope someone can shed further light.
Rob
(PS - anyone want buy my Disk Warrior?)

Your drive is dead, you can look in [macsales.com] or [smalldog.com] for a new new one. The drive isn't too difficult to replace, you can do it yourself, and do get the largest one you can afford, just make sure it's a 3.5" SATA.
Keep your DiskWarrior, you never know when it'll come in handy.

Hey, I just installed ML on my OCZ Octane SSD, everything went ok, However, it got stuck while rebooting and now I can only see flashing question mark icon and ML won't boot at all. Only in safe mode...

Hey, I just installed ML on my OCZ Octane SSD, everything went ok, However, it got stuck while rebooting and now I can only see flashing question mark icon and ML won't boot at all. Only in safe mode...

It looks like ocz is aware of the issue and trying to address it via firmware:
http://www.ocztechnologyforum.com/forum/showthread.php?103700-Mountain-Lion-and- OCZ-Octane-Petrol-and-Octane-S2-SSD-s
It's a shame because apple is clearly the party that changed something.

IMac won't boot - flashing question mark folder

Hi, I was having performance issues with my iMac, so after searching for a resolution, I followed some suggestions to reset the PRAM and SMC....after resetting the PRAM it will not boot up at all! The startup sound chimes, then a blank grey screen briefly before a flashing question mark folder appears. Nothing happens..... I have the install cd, but there is a CD in the drive and I can't get it out. Help!!
Thanks in advance....
Andrea

HI Andrea,
To get the disk to eject, start the iMac while holding down the mouse button.
A flashing question mark appears when you start your Mac
Try booting while holding down the Option key.
Carolyn

How do I fix the GRAY boot-up screen with FLASHING QUESTION-mark FOLDER?

When I turn on the MacBook Pro laptop, I opened up the Safari Browser and its when the problem started. It was stuck on an loading infinite loop. I decided to force quit the application and/or turn off the mac by the Menu options, It did not work. So I did a "Hard" Shut-down and restarted the Mac, the Boot up screen stood gray for like a minute until the Flashing ? Folder icon showed up!.
My sister's laptop's warranty is expired so I wonder how can I fix it without having to spend too much money on a simple troubleshooting tip.
How can I download/create a boot-up Disk/Flash Drive so I can reset it to factory settings?
I cannot access the laptop because It's kind-of software bricked if you ask me. Also, I do not know how to check the Mac OS version outside of the "About Mac" menu. I do have another Mac which is a desktop computer with a CD drive.
I would appreciate some expertise on this issue a.s.a.p. Thank you!

Ok, now I am stuck:
Why does my Mac boot its OS from the Flash Drive instead of the INTERNAL HARD DRIVE???a
If I start up my MacBook Pro, It will have the flashing question mark folder UNLESS i plug in the OS-Boot flash drive. When I at the desktop screen and work on a program, When I unplug the Flash drive, THE OS WILL CRASH AS IF I TOOK it's soul (OS x Lion) out of the body (MacBook Pro Laptop)
this is frustrating because when I did the INTERNET RECOVERY, When I install OS x Lion, the Flash Drive only show up as an option as opposed to the HDD.
I cannot format the hard-drive in DISK UTILITY because it's grayed out. This is just frustating. I never had problems with PC Windows OS recovery but this (Mac OS).

Flashing question mark folder, 3 times this week on my imac : (

My intel based 3.06 GHz imac this week is showing a flashing question mark folder. A friend says is that the hard drive is toast but well twice it was solved quickly. First time on monday I did commandoption+pr to reset NVRAM and it worked. Second time yesterday i pressed option during startup and i selected my mac os x volume. But well today nothing works : (
This flashing question mark is constantly showing up. any ideas how to force my imac to select the hard drive mac os x as the startup disk?
this doesnt work:
1. pressing option to select startup disk as i did yesterday.
2. when trying to boot from mac os x install disc pressing c during startup the imac ejects the dvd.
3. trying to start up in safe boot mode (pressing shift), verbose mode or single user mode all fails, just the flashing annoying question mark folder again.
I was reading that i could use ubuntu live-cd to transfer my data from ubuntu to an external hard drive. I downloaded, burned and then it does shows the ubuntu cd to install ubuntu (the mac os x install disc is ejected but the ubuntu cd works), but i really dont want to install ubuntu X_X I just want my imac back without installing any linux stuff.
I can do target mode with my other macs but the imac hd doesn't show up in the other macs, any way to force the HD to show via target mode in the other macs?
Any ideas? I guess my disk is failing and thats why i have been receiving these question mark folders 3 times this week.
Message was edited by: AppleSensei

if someone has the same issue, i just want to notice i solved it using ubuntu -linux- and transferring the files to an external hard drive from ubuntu, reinstalling mac os x again. When i did target mode with another mac the hard drive didnt appear in finder, but with ubuntu all worked great, i saw my files and then problem solved, i saved my data ; )
I did found annoying using ubuntu to solve this issue with my mac, but well i learnt something new, linux can also be useful when you don't want your data to be deleted as customer support told me they were going to do if i sent my mac.
Message was edited by: AppleSensei

Boots to flashing question mark folder and disc utility cannot locate internal hard drive

Bottling my MacBook Pro I end up with a flashing question mark folder. I reboot holding the option key to select discs and there were no options at all. I plug in an Ethernet cable and it shows a internet recovery option. I click and it downloaded a temporary recovery mode. From there I open disc utility but it doesn't find any internal hard drives. I reset the pram and I still get the flashing question mark folder. Thinking it was my internal hard drive that failed I bought and replaced the internal hd with a new one and repeated all the processes and still no internal hard drive was found. I'm stuck with the flashing question mark folder. Therefore I've concluded that it was my MacBook pros internal hard drive CABLE that had failed. Does anyone know of any other possible problems that is causing this for my MacBook Pro or know of any solutions? Or is replacing my internal hd cable the only solution? Please help!

It was the internal HD cable. I replaced it and now my MacBook Pro works

TS2570 i have an intel imac and im getting a grey sceen. I get the flashing question mark folder. iv changed the H.D 2x and tired to install a new os into it but no luck. The mac isnt going into safe mode or anything. help?

Intel imac 2009. Grey screen with question mark folder. Changed harddrives 3 times now. Tired 5 keyboards on all Usb ports and a hub and keyboard wont boot to startup or safemode of anything but hub gets power. disc drive wont eject or accept a disc cuz keyboard commands not being sent to computer. Help?

Keyboards must be connected directly to the USB port, not through a hub.
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/.

G4 17' won't boot, flashing question mark folder with complications

I'm editing a final cut pro project, due to air on friday at noon and during conversion in compressor to dvd format, final cut quits then the computer freezes up. On a hard restart I get the flashing question mark folder.... i know what that means
I was able to boot up after a couple of tries from the os 10.4 (tiger) cd and the hard drive shows up but disk utility can't make the repair. This is the error i get:
booted with the tiger os cd and got to the disk utility. the hard drive does show up with some generic-y looking name. I try to repair the disk and get this error (in red):
Invalid node structure
Volume check failed.
Error: The underlying task reported failure on exit
then it says:
1 volume could not be repaired because of an error
g4 powerbook 17" Mac OS X (10.4.9)
so then i get the bright idea that i will change the startup disk to network drive and try to start from another drive on the network. it tries to find it then goes back to the flashing question mark. I've restarted holding the c key down with the tiger cd back in there and it is spinning but it never reads it.
any ideas? I REALLY need to salvage this film if possible.
thanks!!!!!
donna
Has anyone seen this before? What is my next step--short of erasing the drive. i really need to get this project off.
thanks in advance for any and all help!!!!!
g4 powerbook 17" Mac OS X (10.4.9)

i'd try disk warrior except that i cant get it to boot from ANY cd right now EXCEPT apple hardware test. and i have NO idea what to do with that.
I've tried booting in option mode and all i get is the little restart button and the forward arrow button but NO drive options
it won't pick up my other laptop in target mode
i've even put in Norton Utilites 8.x and it won't boot up from that either.
i've zapped the pram--nothing
know of any other boot tricks or shortcuts?
donna

IMac with flashing Question-Mark Folder

I've read all of the help on the flashing Question-Mark Folder. Nothing has helped. In fact, Disk Utility only finds 'Disk 0' with the base OS X operating system. All of the disk utility buttons are grayed out and at the top on the left of is 'Media' (not disk drive - not formatted?). When I try to recover from the internet and re-install OSX Maverick, it can't find a disk to install on. Does anyone know what happened and can this be fixed?

Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by one or more of these:
Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
Boot drive's directory has been corrupted - Repair with Disk Utility.
Critical system files are damaged or deleted - Reinstall OS X.
The disk drive is physically non-functional - Replace the hard drive.
Note that the information I have provided is what Apple recommends, If other users suggest different solutions than found here, then be sure what they recommend does not impact on your warranty, if any, or ability to get continuing Apple service.
Please don't start removing drives or changing cables unless you know what you are doing and have exhausted other non-invasive alternatives outlined here. If you perform any work yourself that is unapproved by Apple, then you will void any warranty you may have and lose all further Apple Support.
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.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD. Simply boot from the Recovery HD to perform the above.
Reinstall Snow Leopard Without Erasing The drive
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 Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. 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 main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Flashing Question Mark Folder... with a twist

Hi all, I hope you can help me out.
A month ago I had some trouble with my MacBook. It would continually freeze, then when I restarted it would show the flashing question mark folder icon. When I booted from the OSX CD it couldn't see any drives to install to. Restting the PRAM eventually fixed the issue, but only temporarily: it kept doing it and eventually it seemed that the hard drive was well and truly dead.
I took it to my Mac shop and they replaced the hard drive for me as it was still under my Applecare warranty. Things seemed fine for a couple of weeks.
Then it happened again. Now it seems to have skipped the stage where resetting the PRAM would fix things and has gone straight to the signs of a dead hard drive. I find it hard to believe the replacement drive has died after a couple of weeks. Is there some other issue, such as a faulty motherboard, which could be killing hard drives?
My MacBook is a Core 2 Duo 2.0, with 2GB of RAM and 200GB hard drive, running the latest version of OSX.

I had this happen to my MB a few weeks after purchasing it last November. I took it to the Genius Bar at my Apple Store, and the Genius took my HD out to test it, and said that it had completely locked up, and he wasn't able to get it to load on at all, and that it was dead. They sent it away for me, I got it back a couple days later with a brand new HD, and I haven't had a problem since.
My lesson learned: Backup, Backup, Backup!!! I use Apple's Backup App because it came w/ my .Mac account, but there's plenty of other great Backup Apps out there. Have one or more External HDs set up as backups in case anything happens to your internal, and remember a computer is a computer and sometimes they have problems. However, it does sound like Apple invested in a bad lot of HDs. If it's happening to a lot of people, report it to Apple. There may need to be a recall.

Intermittent Flashing Question Mark Folder

I've got a iBook g4 that seems to be having an intermittent problem booting. A few months back on boot it came up with a flashing question mark folder. After trying a few things it finally booted OK. For months all was good; until yesterday. The same thing happened again. I tried to boot from an install CD to run disk utility, but the drive didn't show up. After a few attempts I was able to successfully boot in target disk mode. After that it booted OK again. I noted in the log a number of I/O errors which makes me think the hard drive is starting to fail. Anyone have any other thoughts or suggestions?

It looks like things are getting worse. I ran diagnostics and everything passed. Is there a reasonable way to make sure the hard disk is the problem? It now will boot only rarely; sometimes hanging on a gray apple screen, sometimes showing disk I/O error messages in the upper left corner of the display, sometimes showing the question mark folder, and occasionally booting. Replacing the hard drive is reasonable, but I'd like to have a measure of confidence that will fix the problem.

Flashing question mark folder after update!!!

Yesterday i did an update on my macbook. After the update the system normally starts again, but mine didn't i waited for 20 min and came to the conclusion that i have to hold down the power button. after that i started again and i got a flashing question mark folder. So i took my SSD out ( vertex limited edition) and put my old HDD with snow leopard in to see if i connect the SSD externally if it would show up but it doesn't i took another HDD case but this also didn't work. So i also tried putting my ssd in the macbook of my sister but this also didn't work. I am clueless, i don't know what to do. I still have warranty but i have new data since my last back up and i really would like it back.

I've not seen any other posts about it causing problems, worked fine here. You've tried resetting the PRAM the only other thing you could try is:
Boot holding down Apple/S and don't let go until you see scrolling text.
When that stops and you see a root#: prompt enter
fsck -fy
Let it run through all the checks and repairs.
If it fails first time, at any time, or finds and fixes a fault - run the command again and keep doing so (some fixes can take several passes) until it says "Appears to be OK" then enter
reboot

Flashing Question Mark Folder--after repair of "Office Database damage"

I received a dialogue box message reporting "Office Database Damage--would you like to repair?"
I said "yes" --BIG MISTAKE.
The machine froze and now on boot-up will only give the dreaded Flashing Question Mark Folder".
Booting from the Installation CD is possible, however, when running the Disk Utility, no Mac HD appears in the window of drives you may check. Also, if I proceed to try to do a Clean Installation, there is nothing in the window offering any possible Destinations for Installation ...NOTHING.
When holding the "D" key down and booting from the Install Disk, I am able to run the Hardware Test which shows NO PROBLEM.
Also, if I try to access the computer as a FireWire harddrive from another MacPB connected via firewire, the only thing that shows up is the Install Disk. No HD shows up.
So, it seems I have a software problem, but no way to access the HD to do clean install or run any repair of disk permissions, etc.
ANY IDEAS?????
MacBook Pro 17, 2GB RAM

A friend of mine is having the same problem. This is why I am searching the boards now.
Anyone have an answer?

Imac wont boot only shows flashing question mark folder (long)

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