Similar Questions

• prohibitory signs but any withdrawal fine

  two days I received the Prohibitory sign up during startup. I searched the forums and googled around, but nobody has presented the same case.

  then that prohibitory sign was present, I was able to boot in safe mode, all saved. diskutil showed no problems with the hard disk, except the problem card partition but diskutil has not fixed it.

  now, I tried to start in mode single mouser, but received error cache kernel 0 x 6

  I started in safe mode, and everything was working fine... decided the formats and wipe everything. but before that, I did diagnostics equipment including the long version, but with no sign of hardware problem.

  has decided to format the HD and reinstall el Capitan...

  installation was made, started normally, set up my mac as good as new. restarted again to check if everything starts fine, but the prohibitive sign showed once again. Started by external hard drive, and performed first aid and it started again very well.

  was the PRAM/NVRAM and reset the SMC but no change.

  I don't know what the computer problem, especially that this single user with error cache kernel 0 x 6

  More information, five weeks until this problem presents itself, I modified the EFI to start like a black screen with the apple logo instead of the gray, with forum mac-forum/github.

  PS I am writing this same MacBook pro mid 2012 which is dealing with prohibitory signs.

  Any help would be appreciated... at the present time, the macbook pro is a clean installation with nothing installed on it, including third party software

  I would certainly run Apple Hardware Test.  There is a guide here on how to do it.  This error usually indicates a problem with the installation of the system, so I would try to repair the drive once more.

• Prohibitory sign with a twist

  Hello community,

  Since a month or two I feel the prohibitive sign with my macbook pro 13-inch mid 2012. Running on El Capitan 10.11.5

  It took about a month to start to repair it because I needed it for work so I kept it running until it got so slow that I had to turn it off.

  Since then, there are some things that happened;

  1 tried everything to reset PRAM and safety boots, but there was no way to boot. I didn't have a recent backup so I took the HARD drive and plugged into a SATA to usb adapter and saved some files and I deleted the system Bootcache.Kext file as Apple advises in one of their sons (link on request). After this he worked again, put the disk HARD back in and everything worked... for a few days.

  2 he really slow down again. Again, I had to do about it and I just kept it on socket. Slow to get and had to reload, new prohibitory sign. So I repaired disk permissions again and all that. Nothing works, but very sometimes it start after having tried like 20 times to start. But once again his lag, it says its loading for like a minute, and then it works like a charm for a minute.

  3. If last night I deleted everything from the hard drive. He gave a clean install, but he always gave me the prohibitive sign. Even among the boots of the installation (which makes me think its a hardware problem)

  4. now comes the twist. If I unscrew the drive of his carrot and the hold or the lay out of the body, its totally fine and it works like a charm. When I put the HARD drive in the body on the hardware side, it is always very good, but when I put the HARD drive on the side of the body (where is located the small power LED light) it freezes and it does not work with bootups. Even if I start the system with the HARD drive out of the body and its all ready, as soon as I put it in it gives me the Rainbow thing mac loading and everything freezes. When I take it back once again, it takes 10 to 15 seconds and it works like a charm again.

  What is going on?

  Anyone had this before please let me know!

  Tim

  There was a wave of bad SATA cables in your MacBook. You should consider a replacement.

• Prohibitory sign during MacBookAir setup

  you just bought macbook air 13 "2016. in the implementation of Mac no longer. I waited more than 45 minutes and then lower it. When you turn again a prohibitory sign appear.

  What should I do?

  Hey nealfer,

  I understand that your new MacBook Air is a symbol of ban starting after trying to implement. Let's go on how you can solve this problem, so you can enjoy your Mac.

  The reason why you see is that your Mac has a problem with the startup of the system folder. It could have happened while you were putting in place or data migration. The good news is that can be fixed by reinstalling the OS X or macOS version supplied with your MacBook Air. Take a look at the information below that will explain the screens during startup. It also has a link to guide you through the stages of resettlement.
  
  

  Symbol ban

  

  When you see a circle with a symbol of slash instead of the Apple logo, it means that your Mac could not find a valid system folder at the start of.

  If you use your Mac to a school or business, he might try to start from the wrong version of Mac OS X. Contact your IT Department for assistance.

  If it's your personal Mac, try reinstalling OS X using OS X Recovery.

  On the screens you see when your Mac starts up
  https://support.Apple.com/en-us/HT204156

  Take it easy!

• Intermittent freeze, to wake up from deep sleep, occasional prohibitory sign at the start

  I have a MBP mid-2012. I recently had problems with a sign prohibitive blinking at startup but it would still proceed to start the operating system very well. I recently tried a clean install of El Capitan only to see that the problem was MUCH worse. After several new installs of El Capitan and Yosemite attempted to boot disks as well as on top moved after the recoveries of the internet, I have not solved yet completely the problem. I also tried to reset NVRAM and SMC.

  Currently I'm running Yosemite and have restarted, there 3 or 4 times without prohibitive side. I didn't let her go to sleep so I don't know if this problem persists. I always get a casual beach ball, but the computer is still sensitive semi. i.e. finder will be insensitive and programs won't load, but I can still move between open programs. This usually takes between 10 and 30 seconds. Occur less frequently in low demand.

  I'm afraid that my hard drive is failing, but I don't have any other evidence to support. I also heard that the sata cable could also be faulty. Is there something else that is maybe I should check/perform before ordering new parts? Is there anyway to check if it is really the reader or cable? The problem is not consistent and hardly repeatable. But it is quite common that I need to fix it. Also would like to have at least the option to upgrade the operating system one day.

  Thank you

  You could try the operation of an external device, to see if it could be memory or some other component.

  Beyond the diagnoses of Apple, please communicate with the folks at Apple Support or the folks at the local Apple Store Genius Bar and see if they will look at the Mac and you get an estimate of the repair.      Otherwise, you learn how to dismantle and to diagnose and repair...

• Do not start (El Capitan, mid 2012 Macbook Pro)

  Hi all!

  I'm having serious problems with my Unibody Macbook Pro mid 2012 since a few days ago.

  On Sunday, all of a sudden the computer really slow and G.Chrome used a lot of CPU, so I rebooted the machine, but on reboot, I couldn't get the operating system to start. I kept getting a white screen with the circle-slash (prohibitory sign) and a file of o Apple logo with the question mark that would Flash briefly before returning to the slash of circle.

  

  After leaving the computer alone for half an hour, it starts without a problem. I rebooted again to see if the problem disappeared, but he returned to the circle-slash. I tried the resets of LANDAU and SMC but no result. I couldn't enter Recovery Mode (via CMD + R, because he just left me a white screen). I got the computer to reboot again and ran first aid to disk on the disk and partition utility and I got a message that says that there is only a problem with the map of partition with could prevent from starting.

  So, I downloaded El Capitan on the App store, is an installation of the flash player program, reformatted the whole drive and reinstalled the operating system but I always get the slash circle approximately 85% of the time and cannot set the Mode of recovery without the flash player. Also, I can't access Single User Mode (CMD + S) I get an error that says something about a problem loading the kernel cache.

  In summary: when the operating system loads (15% of the time), it works well; but can not access the Recovery Mode in single user Mode.

  What are my options?

  Here are the instructions from Apple for your splash screen:

  

  Your HARD drive may also be suspect or the connection with it.  Try to access the Internet, OPTION-COMMAND-R recovery on startup.   Then run disk utility > first aid.

  Ciao.

• Impossible to reinstall OS x El Capitan via the recovery

  10.11.2 OSX

  iMac 27 inch end of 2013

  3.5 GHz Intel Core i7

  NVIDIA GeForce GTX 775M 2048 MB

  DDR3 4 GB 1600 MHz

  My iMac is buggy since upgrade to 10.11. Some programs crash frequently, and just recently, the system began to be insensitive, that needs to be forced to withdraw from the machine. Usually, when the system crashes like this, the mouse moves, but he will be.

  Twice on startup until I received the No. or prohibitive symbol showing no disk or operating system is not found.

  So, I tried a system restore to reinstall El Capitan. Everything went fine until I select the disc to install to. Then the system stops responding again once, completely frozen and I can without restoring.

  So I tried a restore from Time Machine early in the day. I think that would help, but do it anyway. It did not help, the system is still buggy.

  I ran the disk first aid.

  Does anyone have any suggestions or ideas? What's wrong? Of fact need the operating system reinstalled? Why restoration is stalling?

  Thank you!

  I think that you have a failed disk drive.

  Screen of Mac OS X - grey or prohibitory sign appears during startup

  Question (?) Mark, record of flashing or a gray screen at startup

  It's related, but not identical questions. Their causes are described in based on Intel Mac-Startup sequence and error codes, symbols. Solutions will be found in:

  A globe or a flashing question mark appears when you start your Mac

  Mac OS X - grey appears during startup

  In most cases problems can be caused by one or more of these:

  a. problem with the computer's PRAM - see reset the PRAM and NVRAM on your Mac.

  b. boot, directory of the drive has been corrupted - repair with disk utility.

  c. critical system files are corrupted or deleted - reinstall OS X.

  d. the hard drive is physically non-functional - replace the hard drive.

  Please note that the information I have provided is what Apple recommends, if other users will suggest different solutions found here, then be sure to what they recommend has no impact on your ability to get the Apple continuous service guarantee, if any.

  Please do not start remove disks or change cables unless you know what you're doing and have exhausted other alternatives non-invasive described here. If you perform all knit yourself which is not approved by Apple, then you will void any warranty you can have and lose any other Apple support.

  Fix the hard disk and permissions

  Boot from your Snow Leopard installation disc. After the installer loads, choose your language and click on the button continue. When the menu bar appears select utility drive in the Utilities menu. After that the charges of THE select your entry from hard drive (mfgr. ID and car size) in the list on the left.  In the 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 faulty or has failed. (State SMART is not reported on external drives Firewire or USB). If the drive is "verified", then select your OS X volume in the list on the left (subentries under the entry for the road), click the first aid tab, then click the repair disk button. If THE reports any errors that have been corrected, and then run repair disk again until no errors are reported. If no errors are reported, click repair permissions. Wait until the operation is complete, then exit FROM and return to the installer.

  If THE reports errors, it cannot be resolved, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you do not have one of them or none of them can fix the disc, then you will need to reformat the hard drive and reinstall the OS X.

  The main difference if you use Lion or Mountain Lion, you must first boot from the boot Recovery HD simply HD recovery to perform the foregoing.

  Reinstall Snow Leopard without erasing the drive

  1 fix the hard disk and permissions

  Boot from your Snow Leopard installation disc. After the installer loads, choose your language and click on the button continue. When the menu bar appears select utility drive in the Utilities menu. After that the charges of THE select your entry from hard drive (mfgr. ID and car size) in the list on the left.  In the 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 faulty or has failed. (State SMART is not reported on external drives Firewire or USB). If the drive is "verified", then select your OS X volume in the list on the left (subentries under the entry for the road), click the first aid tab, then click the repair disk button. If THE reports any errors that have been corrected, and then run repair disk again until no errors are reported. If no errors are reported, click repair permissions. Wait until the operation is complete, then exit FROM and return to the installer.

  If THE reports errors, it cannot be resolved, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you do not have one of them or none of them can fix the disc, then you will need to reformat the hard drive and reinstall the OS X.

  2 reinstall Snow Leopard

  If the disc is OK then leave FROM and return to the installer.  Proceed to reinstall OS X.  Note that the Snow Leopard installer will not erase your drive or disturb your files.  After installing a new copy of Mac OS X, the installer will move your Home folder, third-party applications, elements of support and network preferences in the newly installed system.

  Download and install Mac OS X 10.6.8 v1.1 updated Combo.

  Relocation of Lion/Mountain Lion without erasing the drive

  HD recovery start: , restart the computer and after the buzzer, press on and hold down the COMMAND and R until the menu screen appears. Otherwise, restart the computer and after the buzzer, press on and hold down the OPTION key until the Boot Manager screen. Select the Recovery HD and click on the arrow pointing down.

  Repair the hard drive and permissions: at startup, select in the main menu disk utility. Repair hard disk and permissions as follows.

  When the recovery menu appears, select disk utility. After that the charges of THE select your entry from hard drive (mfgr. ID and car size) in the list on the left.  In the 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 faulty or has failed. (State SMART is not reported on external drives Firewire or USB). If the drive is "verified", then select your OS X volume in the list on the left (subentries under the entry for the road), click the first aid tab, then click the repair disk button. If THE reports any errors that have been corrected, and then run repair disk again until no errors are reported. If no errors are reported, click repair permissions. Wait until the operation is complete, then exit FROM and return to the main menu.

  Reinstall/Mountain Lion Lion: Select reinstall/Mountain Lion Lion and click on the button continue.

  Note : You will need an active Internet connection. I suggest to use Ethernet if possible because it's three times faster than wireless.

• Send to compressor: how to choose the camera

  Hello

  I apologize if this is a really stupid question, I'm quite new to Motion 5.

  If I am not mistaken, with send to compressor, using the multi-passages option, and other compressor optimized parameters will result in the export of better quality, if this is true, it's the method that I would use for my final exports.  (If I'm wrong, please correct me and let me know which will give the best final ProRes 4444 60 fps 1080 p export - I then import them using FCPX and do a little cut etc, then exporting to h.264 final 60 fps 1080 p).

  Anyway, to my question, how choose them which camera I want to export?

  I choose 'Export using compressor settings,' and then I give myself the opportunity to choose which camera, but I no longer like the options of compressor, where I can choose to use multi-pass and all other settings.

  I tried selecting the camera that I want to export, and then "Send to compressor", but that does not work, it does not use the camera, I chose.  I have a total of eight cameras, so to choose which device I export is quite important for this odd project.

  The answer could be made obvious, once again, I apologize if this is a really stupid question.

  Thanks in advance for any thoughts.

  (Motion 5, compressor 4, El Capitan)

  If you use 'Export using compressor settings' this essentially load presets created in compressor without going into the application, so it has minimal options for adjustment.  What you want to do, you should be able to create a preset in compressor with the settings you need.  Then moving when you use "Compressor to help export settings" select your preset and in the Render tab, there is the section of 3D rendering, you can select the camera you want to copy.  By default, it should be 'Active Caméra', but you can select your other cameras as well.

• How to find the percentage, division and the other half sign on my iMac

  Please can you help. How can I do per cent, of division and half of the signs on my iMac [El Capitan]

  There are simple shortcuts per cent and division:

  SHIFT % + 5

  ÷ Option + /.

  As the ½ side, there is no shortcut to it, but you can use the Emoji keyboard and symbols.

  You will need to activate it in the keyboard preferences (System preferences - keyboard - put a check mark next to display keyboard, Emoji, and viewers of symbol in the menu bar). After you select it, you can use shortcut ⌃⌘Space to open this keyboard or Edit - Emoji & symbols.

  If you do not ½ character in this toolbar, you can search by key word "half" and add it to your favorites for quick access.

• Compressor doesn't recognize no updates of project FCPX

  When I recently sent a FCPX project to the compressor, I noticed that he needed to sharpen after that he had done his work.

  I went back to FCPX and redesigned some of the clips and sent to compressor again. He spat that is exactly the same result as the first time.

  None of my changes stuck.

  After a few tries more and the same result, I thought to move majorly some clips but compressor would always revert to the original version.

  Back in FCPX I've erased all the renders, restarted the program and the computer and guess what - always the same, now, exasperating, result.

  In frustration, I had to let FCPX perform the output work. He recognized every nuance what little I had changed but I think it gives a somewhat lower result

  Compressor, which produced a video much more smooth I can get out of FCPX in native mode. But it is another question.

  Any ideas?

  Thank you in anticipation

  All news FCPX, compressor and El Capitan on a 10.1 retina MBP 15 "

  You first remove the task in the compressor?

  If so, compressor, go to preferences, advanced and click on the button Reset the queue and cancel all jobs.

• No. / prohibited sign at startup

  Hey all, I have a macbook pro to end of 2011 in which I replaced my hard drive to an SSD and I replaced my optical drive to the original HARD disk. Recently, it has frozen randomly without warning so I forced a stop down. Then, after completing the little chime startup and display the progress bar and the apple logo, a sign of no. / prohibited that you see on the "No smoking" signs came and just stays there. I tried several different startup commands, but nothing really seems to work except for reset RAM (Command-Option-P-R), Manager startup and recovery of OS X. In the Boot Manager and recovery of OS X, my SSD in which ran Yosemite (10.10) shows not even upward. It seems that my SSD has failed, but I don't know because it's only 3-4 since I got it. Any help would be greatly appreciated, thank you.

  Screen of Mac OS X - grey or prohibitory sign appears during startup

• Card connection USB Arduino fails on El Capitan

  USB connection to fail Board Arduino on El Capitan but works on Yosemite. On El Capitan, the Arduino appears in the application of information system, but after connecting the printer 3D (a Robo3D) the window is empty and the connection is broken. Everything works fine on Yosemite.

  Apple makes changes in OS X from time to time. During these changes of El Capitan is called SIP (protection of the integrity of the system) which locks in certain areas of the system. Developers are responsible for providing updates to cope with these changes. You can check to see if they have an updated driver for your hardware and El Capitan with Arduino. OS X manages USB drivers for certain categories of hardware such as sound cards, mice, keyboards and others. Printer manufacturers provide their device drivers directly to Apple. Arduino is a hardware and software company, so I expect that they have their own custom drivers. If you can't solve the problem with Arduino, your only option might be to return to Yosemite. In the future, you can do surveys for you ensure that your equipment works with the new OS X before and then update to find out there are a problem.

  Update...

  A Google search reveals many discussions on this issue on Arduino support forums. Different solutions are available, supposedly there is a updated driver, signed now available to El Capitan. Go to the support of the Arduino forums and see what you can find.

• After the update, my macbook air became a brick)

  So, the problem is that my MacBook Air has stopped working, have downloaded the latest update with FileVault (I saw him first in my life, and I don't know what it is the program, because my Macbook after download disabled or broken, I was really confused). Now, I see it on my screen (a circle with a line) and it does not work, can someone explain this sh.t?

  Screen of Mac OS X - grey or prohibitory sign appears during startup

  If it was not a machine or failure SSD, try this:

  Clean Install of El Capitan on a new disc

  1. Restart the computer. Immediately after the chime, press Command + Option + R until a globe appears.
  2. The Utility Menu appears in 5 to 20 minutes. Be patient.
  3. Select disk utility, then click on the continue button.
  4. When loading disk utility, select the drive (generally, the entry Out-bumpy) in the list aside.
  5. Click the Partition tab in the main window of disk utility. A panel will fall.
  6. Set the GUID partition scheme.
  7. Define the type of Format Mac OS extended (journaled).
  8. Click on the apply button, then click the fact when it is active.
  9. Quit disk utility and re-enter the Utility Menu.
  10. Select reinstall OS X and click on the continue button.

  This should install it the version of Mac OS X that has been previously installed when the computer was new.

  [Permission to use any part of the foregoing has been granted by khati, exclusively, to theratter.]

• MacBook Pro crashed

  Hello everyone, I would appreciate the help!  I have a MacBook Pro, to 2009 and installed in El Capitan a few months ago.  Everything worked fine until I restarted the computer a few hours before.  He soon let, then a sign "do not enter" appeared, and then the Apple logo, and finally a page called 'recovery information.  This page offers a few options, for example, "fix the volume." or "reinstall OS X.  If possible, I would like to avoid losing all the information that I have / had on my computer.  (Unfortunately, I had not set up Time Machine). I have no idea what to do and I'm reluctant to try no matter what until I know not if there is a way I can recover my files, my e-mail (in the mailer), photos, music, etc.  I am able to connect to the internet via Wi - Fi, and that's what I'm doing right now.

  Can anyone help?  Thank you very much!

  Screen of Mac OS X - grey or prohibitory sign appears during startup

  Depending on the situation, you may not be able to recover your data if the hard drive is dead.

  Reinstall El Capitan without erasing the drive

  HD recovery start: restart the computer after the ring, press on and hold down the COMMAND and R until the menu screen appears.

  Repair the hard drive and permissions: at startup, select in the main menu disk utility. Repair hard disk and permissions as follows.

  When the recovery menu appears, select disk utility and press the continue button. Disk utility charges and select Macintosh HD entry indented from the list on the left.  Click first aid button in the toolbar. Wait until the operation is complete, then quit disk utility and return to the main menu.

  Reinstall OS X: Select reinstall OS X and click on the continue button.

  Note : You will need an active Internet connection. I suggest to use Ethernet if possible because it's three times faster than Wi - Fi and more reliable.

  
  

• faulty graphics card may adversely affect startup iMac?

  Hello

  My iMac 24 "2008 beginning, which I've recently equipped with an SSD (running El Cap) to replace the original HD, is does not start. The boot process gets stuck on the white Apple screen, about a 1/3 to the top of the progress bar. The screen goes black, and then it restarts again a couple of times and finally get the prohibitory sign.

  I've tried and failed: recovery mode and safe mode and reinstall the OS from a USB key.

  Also tried to open mode target on another computer - but the other computer is even older and running what OS 10.6.8 and which is perhaps the reason why he could not mount the SSD drive.

  Finally, I decided to take it to a laboratory. It is a decision that I tried to avoid because that where I live, there are not many Mac users and I never know technicians have enough experience to know what they are doing and I doubt they have the Apple official diagnostic tools.

  The technician said that the SSD is very good and the problem is caused by the graphics card. The repair would be costly be useful.

  My question is if this diagnosis is logical, since the screen displays the appropriate color and graphics for the various things I've tried (until he got stuck).

  Thank you!

  The computer has never started since you installed the SSD? You might want to examine your procedures or try to boot from an external drive to test. You can solve the problem yourself by checking the LED diagnostic on the logic board https://www.ifixit.com/Guide/iMac+Intel+24-Inch+EMC+2134+and+2211+Diagnostic+LED %27s/7443 if LED 3 lights not it is likely that you need a replacement for the GPU.