Mac boots to prohibitory sign mac os utilities screen

#Mac boots to prohibitory sign mac os utilities screen how to
#Mac boots to prohibitory sign mac os utilities screen mac os x

I also don't know if the error showed on the Apple Hardware Test is related with the S.M.A.R.T.

In past versions of Mac OS X, the prohibitory sign appears as a large grey circle with a diagonal line across the middle of it, on a lighter grey screen. It is similar to a Sad Mac icon and the Chimes of Death in classic Mac OS, which signifies that the Mac is unable to boot normally.

#Mac boots to prohibitory sign mac os utilities screen mac os x

could be caused by a failing sensor, because it happens since a long time and even with the computer just turned on. The prohibitory sign is a sign of trouble on a Mac running Mac OS X or macOS. Since it is currently not clear what the exact cause of the Big Sur boot loop is, youвЂ™ll have to try the different solutions to find the one that works. To fix the Big Sur boot loop, we suggest trying a couple of different methods. This means one of two things: either the system on the hard drive has been corrupted and it canвЂ™t boot from it, or the hard drive itself is damaged.

#Mac boots to prohibitory sign mac os utilities screen how to

So now, I don't know what I should do, cause I think the error on the airflow temperature field of the S.M.A.R.T. How to fix the Big Sur Boot Loop problem on Mac. Looking in some forums I see references about HDD temperature (related to the 4MOT/4/4000003 part, HDD-1525 seems to be another thing I don't know). In the quick mode of this test it showed an error with the code '4MOT/4/4000003: HDD-1525'. Knowing this, yesterday I did an Apple Hardware Test. This HDD also have 37000 working hours, so I'm a bit scared. of my devices and I noticed that even with 'PASSED' status, the HDD (secondary), fails in the Airflow Temperature Celsius field, showing around 60 degrees every time, even if I just turned on my computer. I did everything From zapping the PRAM to repairing disk. I didnt know what to think about it, so I tried a few fixes. Three months ago I checked the S.M.A.R.T. After I installed Snow Leopard, I turned on my Mac to find that the nice Apple logo had changed to a prohibitory sign (with a slash through it). There is another problem, that I don't know if is related. Create a kextbackup folder and move the unwanted kexts and drivers into it. Try booting into Single user mode as explained in Step 8. This occurs two more times, and when the apple icon appear the third time, it shows the normal loading bar and OS X boot as always. Try Single user mode if your Mac canвЂ™t boot into recovery mode and Mac boot process stucks on Grey Screen with apple logo: 1. Few months back, (i think after El CapitГЎn), when I power on my iMac, when the apple icon should appear, it shows a prohibitory sign and stays there a few seconds.