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dual-boot

How to keep Monterey when upgrading to Ventura

A popular insurance when upgrading to a new version of macOS: how to keep your Mac running both Monterey and Ventura. Covers all models including M-series.

October 4, 2022 Macs, Technology

Dual-booting macOS: Disk structure and Recovery

T T Read More

Installing two different versions of macOS within a single container brings flexibility as they share free space, a little economy maybe, and complexity – explained here.

August 27, 2021 Macs, Technology

Booting an M1 Mac: external disks and local boot policy in macOS 11.4

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macOS 11.4 brought major changes to the way M1 Macs handle external bootable disks. This explains how this works during the boot process.

June 2, 2021 Macs, Technology

M1 Macs running Big Sur 11.4 support external disks fully

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macOS 11.4 has finally fixed all the problems with installing current and older macOS on external disks, and booting an M1 Mac from them.

May 27, 2021 Macs, Technology

Explainer: secure boot and boot security

How boot security has changed in the M1 Mac. What it allows you to do, and how it restores flexibility and versatility of external boot disks.

May 15, 2021 Macs, Technology

Booting an M1 Mac: external disks and local boot policy

How an M1 Mac can start up from an external bootable disk, and how that can fail. All about boot security policy, and how that’s applied.

May 12, 2021 Macs, Technology

How to boot an M1 Mac into an older version of Big Sur

T T Read More

How changing a volume’s boot policy can let you boot in older macOS, and update, if you wish. For anyone who uses external bootable disks with an M1 Mac.

May 11, 2021 Macs, Technology

Should you upgrade to Big Sur early, or wait?

It’s got to be better than Catalina, so why not upgrade when it first comes out? Here are some suggestions to help you make your decision.

September 17, 2020 Macs, Technology

Big Sur may yet live up to its name

Here are several good reasons that Big Sur will need more storage space than previous versions of macOS.

July 14, 2020 Macs, Technology

Should you upgrade to Catalina early?

Are you an early adopter, or a cautious delayer? Here’s some advice about the forthcoming upgrade to Catalina to help you decide.

September 3, 2019 Macs, Technology

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