6/18/2023 0 Comments Mac restart recovery mode![]() ![]() If not, we’re always looking for new problems to solve! Email yours to including screen captures as appropriate, and whether you want your full name used. We’ve compiled a list of the questions we get asked most frequently along with answers and links to columns: read our super FAQ to see if your question is covered. Apple tech support might also guide you through this if you’ve called for help. That was a key combination for an Intel Mac, but with an Apple silicon Mac, you need to restart into recoveryOS as described above, and as soon as you see the Options icon, press and hold Command-D. Diagnostics Mode is hiddenĪpple offers a way to start up a Mac and test its hardware automatically. NVRAM still exists, but it can’t be reset by a key combination at startup, and messing with it using Terminal commands could require a revive or restore of your Mac’s startup firmware! As a result, experts suggest not attempting to manipulate NVRAM at all. ![]() ![]() There’s no separate SMC in the M1 Macs its functions are built into Apple’s processor. Standard troubleshooting on Intel Macs for system and hardware weirdness often requires zapping the non-volatile memory (NVRAM) that stores certain settings even when a Mac is powered down, or the System Memory Controller (SMC), which manages hardware parameters, including fan speed and other elements. No SMC to reset, no NVRAM to zap (mostly) Restarting after being in Safe mode brings up macOS with kernel extensions enabled, if any remain. If that solves the problem, follow the developer’s instructions to remove extensions until you find the culprit. Your Mac restarts without kernel extensions. Click Continue in Safe Mode and release the Shift key. Hover over the volume and hold down the Shift key, and a label appears. Then, wait until your startup volume appears in the main screen next to the Options icon. It was just a key at startup with an Intel Mac, but on an M1 system, it’s a few steps.įirst, restart into recoveryOS as describe above. However, if you are having startup or stability problems, Safe mode lets you restart with kernel extensions disabled for troubleshooting. Rogue Amoeba provides a delightful illustrated step by step guide.) (To even install kernel extensions, you have to lower system security. Rogue Amoeba, for instance, requires a plug-in, ACE, that Apple treats like a kernel extension for most of its audio software to work. On an M1 Mac, you only need Safe mode when you are having problems with third-party kernel extensions, which some apps require to tap into low-level system resources. Instead, you either use the Startup Disk preference pane while macOS is active, or you boot into recoveryOS and select a drive there, as I describe next. You might be an aficionado of holding down the Option key after restarting or starting up a Mac, then selecting a startup volume from a list that appears. Choose a startup volume before starting up Those methods also contact the internet to download necessary pieces and replace Internet Recovery. If you can’t get either of those recoveryOS versions to start up, then you have to revive or restore your firmware, described in my article from early March. With an M1 Mac, that process is managed entirely with recoveryOS, and the backup fallback recoveryOS described in the article linked above. Intel Macs could be induced to start off from a built-in ROM that allowed a Mac to connect to the internet and download recoveryOS and bootstrap reinstalling macOS. Get more details and see screen captures about Recovery mode.
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