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.
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Circle with a slash through it at boot up
Hello and Happy New Year!
Yesterday morning I was greeted with the circle/slash image at boot up and my computer would not respond. I called the Protection Plan number and the guy walked me through safe-mode and selecting the start-up disk, etc and it worked. Again last night, the same thing - my iSight camera was not responding, so I did a restart and bam, no boot up. This morning, I walked through the same steps and it is again working.
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Thanks!!Ok everyone following this discussion - here's the latest, and end hopefully, to my problem:
The prohibitory sign issue was solved by discovering another thread about how Norton for Mac does not uninstall everything unless you download a special uninstaller from their website (which is ridiculously hard to find - the link was in that thread). That solved the prohibitory sign.
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Next step from Apple Care was to do a complete Erase and Install. I did. Surprisingly easy to do and much less painful than windows. AppleCare walked me through all the steps and I give them credit to their understanding and patience.
After the erase and install, i was told to not install ANY software and just import CDs. Well I had to install office 2008 because I had work to do, but if Office was causing the issues, there would be many more people calling and complaining.
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So for those of you looking for an answer to the prohibitory sign - all that I can say is "have you installed and uninstalled Norton" or "do you have a VPN"? Both of those causes seemed to give me that issue.
I hope that someone eventually finds this solution helpful - I guess the solution is that the SuperDrive is faulty and that Norton and my VPN was causing the boot up to go haywire.
Oh - so if you have to erase and install..Time Machine works amazingly well. I was dumbfounded how easy it was to reinstall office. I downloaded Office 2008 from my university and only had 1 download allowed. Time Machine backed it up and all i did was 1) enter Time Machine, 2) Find my back up, 3) Click the Office 2008 application 4) click Restore. Done. Bam. Awesome!
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Firefox 4 versions and later do not run on a PowerPC Mac.<br />
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* http://www.mozilla.com/firefox/8.0/system-requirements/
For an unofficial Firefox 8 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at:
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* http://www.macupdate.com/app/mac/37761/tenfourfox
* http://code.google.com/p/tenfourfox/wiki/PluginsNoLongerSupported
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I don't know why it isn't opening, I have searched everywhere for an answer and I don't know what to do, I've deleted it and re-downloaded it and I've changed the permissions on it but now I'm stuck
This is usually down to one of two reasons, either it is a very old application so old that it was written to run on PowerPC Macs and not Intel Macs, or it is a slightly less old application but still too old to run under Yosemite. It might possibly run under Mavericks or it might be too old for even that.
However I have checked and it seems that Lego Batman 3 Beyond Gotham, on the Steam Store it says it is recommended to use Yosemite which your message signature says you are running. On the Mac App Store it says it requires 10.8.5 or later. Where did you download it from? I can also see that on the Mac App Store the current version is listed as 1.0.4 and it appears you have 1.0. I can imagine that 1.0 is too old to run under Yosemite.
See http://store.steampowered.com/app/313690/
and https://itunes.apple.com/gb/app/lego-batman-3-beyond-gotham/id929205348?mt=12
You might also want to read this page http://www.feralinteractive.com/en/mac-games/legobatman3/links-requirements/
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Server refuses connection ONLY with one certain domain name AND from one hard drive
OK, this is kinda crazy and complicated, so bear with me and thank you for your interest. I have a Mac Pro with (3) Internal drives:
Boot is a SSD with all my apps and system software running 10.6.8. That's it.
Master has all my data files.
Mountain Lion has a clean 10.8 install, but I rarely use it.
I am a web developer and have a Wordpress site at www.timfleming.com
When I visit the site with Boot drive, it isn't loading the site correctly in any browser (Chrome, Safari, FF). It looks like no CSS is being applied and the image links are broken. I can get to my WP login page, but when I enter my credentials, the connection is refused by the server. Nor can I access the site via FTP in Filezilla.
If I visit with the Mountain Lion drive, no problem. Login no problem either.
Aha! You might say, there's some incompatibilty between your site and 10.6.8. Well, you would be wrong. I also have a MacBook Pro running 10.6.8 and the latest versions of Chrome, etc and have no problem connecting with it.
Even stranger, I have a local dev site, timfleming.com, that I cannot access with MAMP! Server refused connection
It's as if timfleming.com has been permanently banned from this machine!You, or someone using your computer, may have modified the file /etc/hosts.
The easiest way to fix the hosts file is to restore it from a backup that predates the modification, or to copy the unmodified file from another Mac. If you can't do that, then do as below. Please read this whole message before doing anything.
Back up all data. This is a simple procedure, but if you don't follow the instructions exactly, you could be left with an unbootable system. In that case, you'll have to restore from a backup or reinstall OS X.
If you have more than one user account, you must be logged in as an administrator.
Triple-click anywhere in the line below to select it:
open -e /etc/hosts
Copy the selected text to the Clipboard (command-C).
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). A TextEdit window should open. At the top of the window, you should see this:
# Host Database
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
fe80::1%lo0 localhost
Below that, you'll see some other lines. There should be nothing above the first line "##". If you have any doubt about that, STOP and ask for guidance. Make sure you scroll all the way to the bottom of the document. Scroll bars are hidden by default until you actually start scrolling, so you may not realize that you’re not seeing the whole document.
If the contents of the TextEdit window are as described, close it, then enter the following command in the Terminal window in the same way as before (by copy and paste):
sudo sed -i~ '11,$d' /etc/hosts
This time, you'll be prompted for your login password, which won't be displayed when you type it. If you don’t have a login password, you’ll need to set one before you can run the command. You may get a one-time warning to be careful. Confirm. Quit Terminal.
If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator. Log in as one and start over.
That will fix the hosts file. There is now a copy of the old hosts file with the name "hosts~" in the same folder as "hosts". You can delete the copy if you wish. Don't delete the file named "hosts".
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