- #EXTERNAL DRIVE FOR MAC MINI INSTALL#
- #EXTERNAL DRIVE FOR MAC MINI UPDATE#
- #EXTERNAL DRIVE FOR MAC MINI FULL#
During installation, I elected to copy account settings from my internal SSD, but this failed because “This Mac can’t be used to migrate data”. This eventually worked, but only after encountering further problems.
#EXTERNAL DRIVE FOR MAC MINI INSTALL#
The only option left now was to start from scratch and format the external disk using Disk Utility, then install a fresh copy of 11.2 on it. This failed late during the installation, with the common installation error that ownership of the disk couldn’t be set. Given that I couldn’t boot from the external disk, my next step was to try installing 11.2 to it. The kernel panic was apparently because it “cannot find IOAESAccelerator”, which doesn’t seem to relate to the name of any system file. The only way that I could get that M1 Mac mini to start up successfully was by forcing shutdown uing the Power button, disconnecting the external disk, starting up in Recovery Options, and there setting it to start up from the internal disk.
It then tried again, and again, until I forced the Mac to shut down by holding the Power button in. The M1 Mac started to boot from the external disk, before the display went black for a while. This didn’t work at all, as each attempt to start up from 11.1 on the external disk resulted in a boot loop kernel panic.
#EXTERNAL DRIVE FOR MAC MINI UPDATE#
Updating a bootable external disk to 11.2Īs Apple hasn’t provided an update installer for 11.2, the logical way to update an existing bootable 11.1 external disk is to restart from it, and run Software Update.
Trying to restart from the external disk then results in an error. When that finally completes, instead of the Mac restarting from the external disk to complete installation, the installer just quits. At that stage, Activity Monitor reports that is taking lots of CPU, and there’s sustained and intense disk activity for many minutes. The problem occurs at the end of the normal installation phase, when presumably the installer is writing hashes up the Merkle tree, with the installer window claiming that there’s only About a minute remaining.
#EXTERNAL DRIVE FOR MAC MINI FULL#
Using the 11.2 full installer app, the one SSD (Samsung X5) that worked for me before works still, and the SSD which wouldn’t take a bootable installation of 11.1 still won’t oblige. However, far from 11.2 solving this problem, it actually makes it worse.Īs far as I can tell, macOS 11.2 is no less unreliable at this than was 11.1. Now that Big Sur can be updated to 11.2, I’ve been looking at how that affects external boot disks, and whether it finally enables them all to work. For others, the macOS installer just can’t do the trick, and a high-quality SSD is left unbootable. Some users seem to have all the luck, and the first external SSD they connect to their M1 Mac works fine with the Big Sur installer, and they don’t look back. When running Big Sur 11.1 on an M1 Mac, making a bootable external disk is entirely unpredictable.
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