Usually, factory reset instructions say that I should remove a volume or volume group. But to be sure that the installation is really clean, I prefer to use another option:
- In Disk Utility select View > Show All Devices
- Select APPLE SSD
- Click Erase, choosing GUID Partition Map
I know Intel machines allow to boot from either Internet Recovery or USB drive after such an erase. But M1 seems to be more like iPhone, which can end up in a DFU mode and require another computer to "revive" it.
Will M1 Mac boot from an external drive or from the Internet, if I wipe the entire SSD?
I guess, if I'm lucky and successfully install macOS right after the wipe, then everything is fine. So my question is, if I erase everything on SSD and restart the computer, will it be able to boot into recovery by itself or at least into recovery on the external drive?
Boot modes for a Mac with Apple silicon says that there's "Fallback recoveryOS", which relies on "second copy of recoveryOS that is kept for resiliency". Will it also be wiped?