Mavericks Circle With a Slash

Just randomly today my macbook booted up with a circle and a slash through it. It hasn't happened before and from the other forums this usually only happens to new installations and my computer has had mavericks since October. I even used it this morning. I opened it up and the screen was frozen for two minutes so I rebooted it and when it started up, the circle and slash appeared. Please help!

Gray screen at startup
http://support.apple.com/kb/PH14062
Startup in Safe Mode
http://support.apple.com/kb/PH14204?viewlocale=en_US
Repair Disk.
Steps 1 through 7
http://support.apple.com/kb/PH5836
Reset PRAM
http://support.apple.com/kb/ph14222
Reinstall OS X
http://support.apple.com/kb/PH13871

Similar Messages

Circle with a slash that goes away after restart?

Hello there!
I have an old mid-2007 imac 24 7.1 Few weeks ago i installed an SSD drive inside and OS Mavericks.
Everything is/was fine but recently i'm getting this circle with a slash. I've read that its an os files problem that people can bypass by going into safe mode and totally remedied by reinstall. However in my case right after I restart my computer, everything is back to normal, except for a small, almost unnoticeable delay during start up (loading under apple on startup white screen)
Any idea what is it and is it anything concerning?

Startup in OS X Recovery, go to Disk Utility and Repair your Startup Volume.

I downloaded the newest version and there is a Circle with a slash through it over the firefox icon. When I click on it the message is the system does not support this version. How do I reinstall the previous version?

I updated firefox. When I did there was a circle with a slash (as in No!) across the firefox icon. I clicked on it to open the browser and the error message reads: the application firefox cannot be launched - 10661
How do I go to the previous version that worked just fine?

Firefox 3.6.x is the last available from Mozilla for PPC Macs. <br />
http://www.mozilla.com/en-US/firefox/all-older.html
For older Macs that aren't supported in Firefox 4+ versions, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 . <br />
http://www.floodgap.com/software/tenfourfox/<br />
http://tenfourfox.blogspot.com/ <br />
https://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported

Will only boot to a circle with a slash

MacBook Pro will only boot to the circle with a slash symbol. I have tried all the turn on hold C, X, Option key suggestions and have tried the clearing ideas (hold cntl, commmd, p, r). Have put the system disk in to boot from that, now I cannot get the disk out.
Any suggestions out there?

Your computer is not recognizing your hard drive. Plug a mouse in and hold the mouse key down when booting. The disc should eject. Next, make sure the disc is real clean with no finger prints or scratches on it. Then try booting from it again (by holding the "C" key down) when booting. See if your Disk Utility sees the drive and run that. If it does not, or the unit will not boot from the install disc, then you have a serious problem--possibly logic board-related. You could also try running DiskWarrior and see if that will boot and repair the drive.
Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG

My Mac Pro tower quad core crashed and is showing a NO sign (the circle with a slash through it). How do I safely get it to come back up ? Model A1186

My Mac Pro tower quad core crashed and is showing a NO sign (the circle with a slash through it). How do I safely get it to come back up ? Model A1186

General purpose Mac troubleshooting guide:
Isolating issues in Mac OS X
Creating a temporary user to isolate user-specific problems:
Isolating an issue by using another user account
Identifying resource hogs and other tips:
Using Activity Monitor to read System Memory and determine how much RAM is being used
Starting the computer in "safe mode":
Mac OS X: What is Safe Boot, Safe Mode?
To identify potential hardware problems:
Apple Hardware Test
General Mac maintenance:
Tips to keep your Mac in top form
Troubleshooting: My computer won't turn on
https://support.apple.com/kb/TS1367
Where are your bootable backups and clones stored?
What do you have to boot from to restore or attempt to recovery files that are not backed up?
It won't be a PowerMac. People tend to think they look alike? or mean the same thing.
http://www.everymac.com/systems/apple/mac_pro/specs/mac-pro-quad-2.66-specs.html
Try zap PRAM and SMC Reset. If you have ATI 5770 which many have upgraded to you won't be able to use older DVD or systems than 10.6.5

Circle with a Slash Through it and Non-Mounting Hard Drive

Hello,
So I have a Macbook Pro (Early 2011) and the other day it was installing some update. It turned off, so I went upstairs to plug it in but once I powered it on and logged in it just shows a circle with a slash on it. The guest user account works fine. After researching on Google, I found out that the circle with slash means its missing boot files and I should try reinstalling the os with an archive and install. It wouldn't show up as a valid partition to recover from. In disk utility, the main hard drive shows up, the Macintosh HD shows up as well but is greyed out and will not mount. I just need to copy the files off it, and then I can do a clean install of the OS.
This is what I get when I try to repair the main hard drive from disk utility:
Verifying and repairing partition map for “Seagate FreeAgent Media”
Checking prerequisites
Checking the partition list
Checking for an EFI system partition
Checking the EFI system partition’s size
Checking the EFI system partition’s file system
Checking all HFS data partition loader spaces
Reviewing boot support loaders
Checking Core Storage Physical Volume partitions
Checking storage system
Checking volume.
disk3s2: Scan for Volume Headers
disk3s2: Scan for Disk Labels
Logical Volume Group C948DC54-AFC3-4E89-81C5-518FEBD8E2AB spans 1 device
Logical Volume Group has a 16 MB Metadata Volume with double redundancy
Start scanning metadata for a valid checkpoint
Load and verify Segment Headers
Load and verify Checkpoint Payload
Load and verify Transaction Segment
Load and verify Transaction Segment
Incorporate 1 newer non-checkpoint transactions
Load and verify Virtual Address Table
Load and verify Segment Usage Table
Unable to bootstrap transaction group 3803: inconsistent crosscheck
Continue scanning metadata for an older checkpoint
Load and verify Segment Headers
Load and verify Checkpoint Payload
Load and verify Transaction Segment
Incorporate 0 newer non-checkpoint transactions
Load and verify Virtual Address Table
Load and verify Segment Usage Table
Unable to bootstrap transaction group 3802: inconsistent crosscheck
Continue scanning metadata for an older checkpoint
Load and verify Segment Headers
Load and verify Checkpoint Payload
Load and verify Transaction Segment
Incorporate 0 newer non-checkpoint transactions
Load and verify Virtual Address Table
Load and verify Segment Usage Table
Unable to bootstrap transaction group 3801: inconsistent crosscheck
Continue scanning metadata for an older checkpoint
Load and verify Segment Headers
Load and verify Checkpoint Payload
Load and verify Transaction Segment
Incorporate 0 newer non-checkpoint transactions
Load and verify Virtual Address Table
Load and verify Segment Usage Table
Unable to bootstrap transaction group 3800: inconsistent crosscheck
No valid commit checkpoint found
The volume C948DC54-AFC3-4E89-81C5-518FEBD8E2AB was found corrupt and can not be repaired.
Problems were encountered during repair of the partition map
Error: Storage system verify or repair failed.
Also, I tried disk warrior but it doesn't show up as one of the drives available to repair. I'm running Lion on my machine.
Any ideas?? Thanks in advance.

SokrMan wrote:
The volume C948DC54-AFC3-4E89-81C5-518FEBD8E2AB was found corrupt and can not be repaired.
Problems were encountered during repair of the partition map
First off, thanks for being so detailed it saves a lot of trouble.
What has occured is your GUID partition map has become corrupted, this small hidden section on the drive is responsible for telling the hardware what and sizes of the partitions are on that drive. (OS X Lion, Lion Recovery and EFI)
The only way to rebuild the partition map is to erase and reformat the ENTIRE drive, including the hidden Lion Recovery Partition (which you booted into (Command R) to use Disk Utility to try to repair the drive.) Obviously this can't be done from the same drive booted from.
Unfortunatly with OS X 10.7 Apple didn't provide OS X install disks to install OS X onto a external drive or to boot from to perform the complete erase and reformat of the entire drive.
However if you have a blank powered external drive and a fast, reliable Internet connection (AppleID and password), you can Command R boot into Lion Recovery, format the external drive (Disk Utility: Partition: Options: GUID, Format: OS X Ext. J) and then install Lion from Apple's servers onto the external drive.
Once you have that, reboot holding the Option key down (wired keyboard) and select the external drive to boot from. Once you go through setup, try to grab your files off the internal drive.
(DataRescue can be used to recover deleted or corrupt file structure files directly from the 1's and 0's on the drive itself, it's $99, but a option if for some reason you can't do it manually via drag and drop)
Once you have all your files off the machine (make another copy to another drive and disconnect that drive), use Disk Utility (booted on the external drive, it's in the Utilities folder) to select the entire internal drive (drive makers name and size) and perform a Erase with Security Option Zero All Data. This will take a few hours so wait it out. What this will do is force 0's to every bit on the drive, if the hardware detects a bad sector it will map that bad sector off. (I suspect you have a failed sector in your GUID parititon map.)
Once that's complete, check the Partition tab: that Options is GUID and Format is OS X Extended (j)
Now if you have a newer Mac, if you reboot normally (no external drive connected) the Mac itself should install either the Lion Recovery Partition or combined with OS X all by itself over the Internet, I haven't seen or done this yet, so you'll be poineering this aspect. If you get Lion Recovery, then simply boot into it (Command R) and install Lion onto the Lion Partition.
Then go about installing all your apps first, then create a same named user as the old one (different password is fine) if you didn't use the same name as before, and then connect the external drive and transfer your contents of your User file folders (Music, Pictures, Movies etc) into their same name folders on the new setup, don't change anything, just select all and drag and drop, replace. By using the same user name, it preserves your itunes playlists and other data that depends upon correct user pathnames to the secondary files. If you start moving things around you'll lose the pathnames to your secondary files (songs). If your permissions are off, Finder: Get Info to set all (including down inside folders) to your new username.
If Internet Recovery doesn't work, option boot from the external drive and download Carbon Copy Cloner (free to use, donations accepted) and learn how to clone both your Lion Recovery Partition and OS X Lion Partition back onto your internal drive.
http://www.bombich.com/
https://support.apple.com/kb/HT4718
If by some chance you don't have a fast, relaible Internet connection your going to have ot take your machine to someplace that does, or have Apple fix the mess they caused by not supplying boot disks.
You can opt to buy the $69 Lion USB thumb drive, you can option boot off of that and perform the same functions above onto a external drive to boot from and recover your files.

I did not realize Ilife was already on the new mac, and installed I life from a disk. Now Iphoto has a circle with a slash, when trying to open is says (you can open iPhoto because is may be damaged or incomplete. ?

I did not realize Iife was already on the new mac, and installed I life from a disk. Now Iphoto has a circle with a slash, when trying to open is says (you can open iPhoto because is may be damaged or incomplete. ?

This sounds different than with my IOS devices, since I am able to see the photos even with a connection to the Internet.
Do you mean without a connection to the internet? With a connection it's logical you would be able to see the PS.
The following is from iCloud: Photo Stream FAQ
Can photos be saved or downloaded from a shared photo stream?
Yes. Once photos are shared, anyone who can view the shared photo stream can download and keep the photos permanently.
On a device using iOS 6 or later, you can save photos to the Camera Roll. On a Mac, using iPhoto 9.4 or Aperture 3.4, you can save photos from the shared stream to your local Photo Library or any other location on your Mac. On a Windows PC, you can copy photos from a shared photo stream to any folder. On the web, photos can be downloaded directly to your computer from the detail view of each photo.
This tells me that the image files are not on the HD unless the subscriber chooses to download them.

The apple on the gray start-up screen turns into a circle with a slash.

My G5 has been pretty reliable for the past three (?) years. Lately it's been a bit squirrely booting up--once it went into kernel panic during boot, but powering down and restarting seemed to fix that. Lately, too, when I let the machine run and it goes to sleep I'll come back after a couple of hours to find the fan running at top speed and the machine unresponsive. Yesterday it seemed to have problems booting so I reset the PRAM and NVRAM and ran Onyx and it worked fine all day. This morning when I went to boot, I got the usual gray screen with the whirling gear. After about a minute, the apple in the center of the screen turned into a circle with a slash while the gear continued to whirl. How do I fix this?

I've subsequently tried a number of things. I reset the SMU, which didn't help until I also reset the PRAM. Computer booted normally. I rebooted from the Tiger DVD and repaired the start up disk; there were only two small errors to be fixed. The machine booted normally (and pretty quickly) for about a week before the problem resurfaced. I again went through the first two steps and got things working once more.
Lately the problem has returned. First, resetting the PRAM didn't help; only resetting the SMU worked. At the last event I needed to reset the PRAM without resetting the SMU. When I get home tonight I'll try booting from the DVD and repairing the permissions on the start up drive.
At first, I thought I'd leave it running all night, but when I got to the office in the morning the fans were running at full throttle and the machine was in a coma. All I could do was reboot--which it did, immediately going into kernel panic. I shut it down and rebooted, resetting the PRAM in the process. The computer booted and ran fine all day, although it seems slow (I did have Photoshop CS4 and Lightroom running simultaneously, but I do have 5 GB of RAM).
It's been suggested I may have a corrupt RAM chip (computer doesn't chirp at me, as I'm told it would) or, more terrifying, a processor is about to check out. I also have an ATTO SCSI card in this to run a legacy scanner. Could that be a problem?
Any advice?
JP

I get a circle with a slash when I hit f8, F9 or f10 to backlight keys

My keyboard back lighting doesn't work much but I reset PMU and PRAM then suddenly it worked. Now though, about an hour later, if I hit any of the keys I get a circle with a slash as if it is turned off, illegal, or not installed. Anybody know what it means? I have the backlight checked off in the energy manager.
I'm confused.
Also, the lower memory slot is kaput.
thanks,
Connie

I fixed it by putting the install disk in and verifying/repairing the disc and the permissions.
The memory slot was not repaired. I understand it was a problem with some powerbooks but the repair program ended in July 2008.
Connie

A NO symbol (circle with a slash thru it) on the screen

Changed HD on my Mac Book. The HD has OSx lion preinstalled.
When I power up all I get is chime and a NO symbol (circle with a slash thru it) on the screen

Hi, echokim.
Thank you for visiting Apple Support Communities.
Here is the best article to go through when your iPod displays this image.
iPod Displays a Red "X" Icon
http://support.apple.com/en-us/HT203170
Cheers,
Jason H.

Sometimes on a re-start I get the apple logo then a circle with a slash through it.

Hello all! I have a 2010 Mac Pro sometimes on a re-start I will have the apple logo then it changes to a circle with a slash through it, the circle stays for awhile then eventually it does boot into the desktop, is there an issue going on that I need to address? Thanks in advance. Carl

Mac OS X: "Broken folder" icon, prohibitory sign, or kernel panic when computer starts

Reset PRAM, now monitor shows just a circle with a slash through it

Big problem. My iBook clamshell has a battery that just started sometimes charging and sometimes uncharging while computer was plugged into power adapter. Then the computer just "blacked out" a few times while plugged into power adapter.
I bought a new power adapter, but still had the problem with the uncharging battery. One time the percentage amount of a charge would go down when it was being used while plugged into power adapter, the next time I used it the percentage amount might go back up to 100%. Money's really tight (I'm working part time & paying for emergency medical expenses) so instead of buying a new battery I dug out some instructions that helped my other clamshell that started "blacking out" a couple of years ago. At that time I was given a link to an article on resetting PRAM, and I'd printed out and kept the article.
While the iBook was starting up I held down the keys: Command, Option, P and R. You're supposed to hold down the keys until you heard the start up sound a 2nd time. Well, I messed up and held them down until I heard the start up sound 3 times. Maybe that was a fatal error - something screwed things up.
The monitor went from black to pale blue, but instead of getting the Apple icon as start up began I got a circle with a slash line through it. Nothing else happened. I had that circle mark for about 15 minutes - the computer never went into sleep mood and finally I improperly turned it off by using the power button.
I turned the computer on again, hoping the problem had gone away. I got the pale blue screen showing the circle with a slash mark. I waited awhile, thinking something might start happening after a delay. And once again I improperly turned the computer off using the power key. I won't turn it on again unless I'm given a possible solution.
I bought this 2nd iBook because it had an Airport card, and I take it to the library to use free WiFi. I've been entering an important manuscript that I don't want to use.
Is this fixable? This has me big-time frightened.

Hi Karen,
If your computer is back from the dead, then possibly your kernel panic issue has been resolved. Maybe there were software or directory issues that are now fixed.
It wouldn't hurt to go ahead and open Disk Utility and repair permissions. Disk Utility should be in the Utilities folder in your applications folder.
Repairing permissions is something you should do after every software download because permissions are changed for the download process. You repair permissions on the First Aid tab, and you want to repair them several times until there is nothing left to repair. While in Disk utility, you can also verify your hard drive and check the SMART status and make sure it doesn't have any problems. I would recommend you leave Disk Utility in the Dock so it will be handy next time you need it.
As long as your hard drive is in good shape, it won't have hurt anything to have skipped the step of verifying the drive. However, it is prudent to check on the hard drive before downloading software, because if the hard drive is failing or something, your priority will be to save the data off of it. A failing drive is unpredictable, and puts you at risk of losing everything. If you elect to keep Disk Utility in your Dock, you can check your drive anytime you like.
You can also do a Safe Boot as a maintenance item every so often:
http://support.apple.com/kb/HT1564?viewlocale=en_US
http://support.apple.com/kb/HT1455?viewlocale=en_US
http://support.apple.com/kb/TS1884?viewlocale=en_US
It sounds like maybe you reinstalled the OS by doing an Archive and Install, which would have installed a fresh copy of the OS while preserving all your settings and data.
Not sure why you can't connect to the internet. First check to be sure your airport card is plugged in and recognized. If it is, you should be able to go to System Preferences>Network and use the assistant to help you to reconnect. It may be you'd have to set up a new location or something like that.
One thing you should do is to put in place a backup strategy. If an external hard drive is beyond your means right now, at least try to find a USB flash drive. Office depot has 4 GB drives on sale for around $10 every so often, and you can find even better deals on line. You can store a lot of documents in 4 GB flash drive, and you would not have the worry of potentially losing everything if your computer dies. I am really glad you got your document back after all the hundreds of hours it took to create it, but there was a real danger that you could have lost it and all your other data.
Once you get your flash drive, use Disk Utility to format it (they usually come pre-formatted for Windows). You want to do this on the Partition tab--select Mac OS X Extended (Journaled) for the format and "Apple Partition Map" for the partition map scheme. You can also give your flash drive a name. Once you have it set up, you can mount it on your desktop and copy your documents etc. by dragging and dropping.
Good luck, and happy computing!

I get a red circle with a slash through it when trying to move music into folders.

I had to reformat my laptop hard drive. I moved everything to an external hard drive, and then brought it back after the reformat. I did something wrong, so all the folders are gone. I can create new playlist folders now, but when I try to move the music over, as soon as I get in the area with the playlist folders, it gives me the red circle with the slash through it, and stops me form dropping the songs in the folders.
I am logged into my account and the computer is authorized to my iTunes. Not sure where to go from here, other than the Apple store.

iTunes doesn't pay much attention to file and folder names with one minor exception. On import any untagged files will be given their filename as their track name.
You can drag a folder full of files onto a playlist and all the tracks will be added to the playlist, having first been added to the library if iTunes isn't already aware of them.
When you add files to iTunes from outside the iTunes Media folder and the option Copy files to iTunes Media folder when adding to library is enabled then copies will be created, and iTunes connected to those. If you subsequently import the same folder you will create duplicate files. If your files start life inside the iTunes Media folder, or that option is disabled, then they can be imported again without creating duplicates. However, if your files start life inside the iTunes Media folder and the option Keep iTunes Media folder organised is enabled, then once you have added the folder to the library the files inside it will probably be rearranged.
In the long term your library will be easier to maintain if all the files are inside the iTunes Media folder. It is probably easier to let iTunes manage them unless you are really particular about the layout or are importing files without tags such as wav, in which case I have some scripts that can extract useful information about the file from the filename and path provided iTunes doesn't get to throw it away first.
If your main aim is to rebuild some existing playlists, which exist by dint of all the files for each playlist being in separate folders, and you want to avoid creating duplicates, then try this.
Create a new empty playlist, select the music folder and put it into date added order.
Move all the files into the Automatically add to iTunes folder.
Select all the recently imported files, drag and drop them onto the new playlist.
Repeat until all files are added
tt2

What does it mean when all I see on the screen is a circle with a slash?

I did a hard shutdown when my MacBookPro was not responding to a Save command, When I rebooted all I got was a circle with a slash through it in the center of the screen, and the "spinning wheel of death" below it. What happened??

Mac OS X: Gray screen appears during startup
What exact MacBook Pro and what Mac OS X version do you use, since the signature only states the name and the iOS version of your iPhone or iPad?

Iphoto '08 has circle with left slash over its icon

I tried to import or copy (tried both) an image to iphoto to my library, then all of a sudden the fan became extremely loud and the bottom of the laptop heated up quickly. I had to force quit and let the laptop cool off. Today, iphoto has the circle with a left slash over its icon. I dbl click and a message says it can't be launched. I can't figure out how to re-install iphoto as well as what I did to mess it up. Anyone can help me out?? Thanks ahead of time.

Try using Pacifist to extract iPhoto from the iLife disk or your computer's original disks.
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Mavericks Circle With a Slash

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