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Category Archive: Technology

Saturday Mac riddles 133

Here are this weekend’s riddles to entertain you through family time, shopping and recreation. 1: The period allotted […]

January 8, 2022 General, Macs, Technology

Explainer: Logging out and in

Is logging out and back in again a good way to deal with problems? Although it can be, it might not do what you think it does any more.

January 8, 2022 Macs, Technology

How macOS controls performance: QoS on Intel and M1 processors

T T Read More

Running processes at different Quality of Service affects their performance differently on Intel and M1 Macs. This explains what happens.

January 7, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 3 XNU, the kernel

Once the kernel takes over from iBoot, there’s a lot of hardware to get running before the SSV can be properly validation, and kernel extensions loaded.

January 6, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 2 LLB and iBoot

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Sometimes known as iBoot1 and iBoot2, they start work with the LocalPolicy for the intended boot volume, validating its vital components.

January 5, 2022 Macs, Technology

Booting an M1 Mac from hardware to kexts: 1 Hardware

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Understanding each of the four stages in the Secure Booting of an M1 Mac. These are summarised in diagram available here.

January 4, 2022 Macs, Technology

Solutions to New Year Mac riddles 132

I hope that you enjoyed Saturday’s New Year Mac Riddles, episode 132. Here are my solutions to them. […]

January 3, 2022 General, Macs, Technology

Power, frequency, management: how M1 E cores win

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macOS manages the loading and frequency of M1 cores according to the QoS set, and rules which differ between the original M1 and the M1 Pro.

January 3, 2022 Macs, Technology

Last Week on My Mac: On M1 chips 1 + 1 = 4

How the two Efficiency cores in the M1 Pro and Max chips can match the performance of all four E cores in the original M1.

January 2, 2022 Macs, Technology

New Year Mac riddles 132

Here are this weekend’s riddles to entertain you through family time, shopping and recreation. To mark the New […]

January 1, 2022 General, Macs, Technology

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