Where is panic.log

If you're using a non-Apple keyboard that requires a driver to work, temporarily replace the keyboard with the original Apple-supplied keyboard. When everything but the keyboard and mouse is disconnected, restart the Mac. If the Mac starts up, repeat the startup process, reconnecting one piece of external hardware at a time, and restarting after each until you figure out which device is causing the problem. Devices such as wired routers, switches, and printers can all be the source of problems.

If you still can't start your Mac without a kernel panic, it's time to check some basics. Once your Mac boots to the installation or recovery screen, use Disk Utility to run a Repair Disk on all drives connected to your Mac, starting with the startup drive. If you run into problems with your hard drive that Repair Disk can't fix, it may be time to replace the drive. Of course, other hardware problems generate a kernel panic beyond the drive.

RAM glitches or even problems with basic components of your Mac, such as the processor or graphics system. Apple Diagnostics online for Macs introduced after June and Apple's Hardware Test for older Macs can usually find common hardware problems. Disable all startup and login items and then start up again in Safe Boot mode press the power button and immediately hold down the Shift key.

Some applications install system-wide startup items. Each startup item in this folder is usually located in a subfolder identified by the application's name or some semblance of the application's name. Move all the subfolders to the desktop you may need to provide an administrator password to move them. When the startup and login items are disabled, restart your Mac normally. If the Mac starts without any problems, reinstall the startup and login items, one at a time, rebooting after each, until you find the one that's causing the problem.

You can use FontBook to check any fonts you installed with FontBook. Select multiple fonts and then use the Font Validation option to check for errors and corrupt font files. If you find any problems, use FontBook to disable the fonts. If nothing you do resolves the kernel panic, it's a good bet the issue is hardware related. It can still be something basic, such as bad RAM or a hard drive that isn't working correctly. Take your Mac to an Apple Store or authorized service center. Making an appointment at an Apple Store is easy, and the diagnosis is free.

Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. System uptime in nanoseconds: This gives the time since the last startup, but in nanoseconds. To convert it to seconds, remove the last nine digits, here resulting in From there, divide it by 60 to get minutes, and 60 again for hours. This turns out to be a bit more than hours, or over 14 days. Zone Name Cur Size Free Size vm objects … The panic log may then give a detailed breakdown of system memory zones, which in this panic are going to be very important.

Note how the Free Sizes of kalloc. This is consistent with the kernel running out of memory in one of those zones. UAudio Combine the information you have gleaned from the panic log with any you might gain from the unified log, and your knowledge of the circumstances of the kernel panic, and you should have a shortlist of suspect causes. Apple provides further details in an old and now retired Technical Note, TN Like Liked by 1 person.

Thank you. Have you disabled CrashReporter, perhaps? Normally in Mojave and later, this should be opened automatically a minute or two after starting up, and afterwards moved to that Retired folder. Like Like. So, maybe due to a nasty impact or an unknown issue, your iPhone seems to have run into a serious problem. Worry not, as there is a pretty straightforward way to check hardware issues on iPhone using panic.

Let us guide you through it! For those unfamiliar with it, the diagnostic feature, which has derived the name from Kernel, is a crucial component of any OS including iOS. When the Kernel encounters an issue or an error while loading, the problem is termed as Kernel Panic, indicating that something critical has happened to Kernel and even stopped it from loading properly. When it happens, Kernel puts the entire diagnostic information in a file named panic. With the help of panic.

And once you have checked the hardware issues on your iPhone with panic. So, irrespective of whether you are using an old iPhone or daily driving the iPhone 12 Series , you can use this diagnostic tool to figure out if your iOS device is facing a hardware problem. When the panic happens, the panic dump is streamed over to the second machine, and you can see it all by scrolling up on the terminal.

There are also other methods which overcome the hardware limitations mentioned above, at the cost of being more complex and less reliable. Notable methods:. Ultimately, getting panic output requires that some kernel functionality work, and any kernel functionality could be corrupted by the panic. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Where are kernel panic logs? Ask Question. Asked 9 years, 9 months ago. Active 9 months ago. Viewed k times. Improve this question. Any specific message you get when transcoding? Might be useful in tracking down the solution ; — Rinzwind.