Raspberry Pi 400 Desktop PC

Re:Raspberry Pi 400 Desktop PC by rwmj on Monday November 02, 2020 @06:58AM (#24967115)

The RPi 4 has USB 3 + UAS which is actually quite decent. I use it for Aarch64 development[1]. It boots and runs entirely off the SSD, and the performance is not spectacular but perfectly usable, and being it's a regular SSD it should be at least as reliable as a laptop.

It also has a firmware bug where it cannot boot unless there is an (empty, unused) SD card in the slot, which is annoying!

[1] https://rwmj.wordpress.com/2020/09/24/raspberry-pi-4-running...

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Re:Raspberry Pi 400 Desktop PC by larschdk on Monday November 02, 2020 @07:12AM (#24967239)

I boot my RPi 4 entirely from USB with the Sep-3-2020 bootloader. No sd-card inserted. The Sandisk Extreme Pro benchmarks at 230 MB/s on USB 3.0.

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Re:Raspberry Pi 400 Desktop PC by justin66 on Tuesday November 03, 2020 @12:24AM (#24976635)

I've never had the problem either - I started using the RPi4 seriously when it became possible to boot from USB, and it's great. USB boot is working properly in the newest Ubuntu Server and Ubuntu MATE Desktop images as well as the official Raspberry Pi OS.

The Samsung T5 and T7 are frighteningly fast USB-attached portable SSDs - some simple tests of mine had them at around 335MB/s. On paper the T7 should be twice as fast, so it's interesting that they tested so close (the T5 was even a little faster, as high as 350MB/s), but they are both totally good enough.

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Re:Raspberry Pi 400 Desktop PC by kaszanka on Monday November 02, 2020 @11:32AM (#24969876)

Seems like this only affects UEFI bootloaders.

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Re:Raspberry Pi 400 Desktop PC by cure on Monday November 02, 2020 @12:46PM (#24970822)

I boot a RPi 4 via PXE (or rather, the RPi version of PXE, which is decidedly non-standard, meh). No SD card in the slot. No problem. Are you on the latest firmware?

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Re:Raspberry Pi 400 Desktop PC by rwmj on Monday November 02, 2020 @02:43PM (#24972232)

It seems to be an EFI bug rather than RPi firmware bug.

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Re:Raspberry Pi 400 Desktop PC by kingosticks on Monday November 02, 2020 @07:44AM (#24967535)

Sounds like they fixed (read: worked-around) that issue in https://github.com/pftf/RPi4/releases/tag/v1.17

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Re:Raspberry Pi 400 Desktop PC by rwmj on Monday November 02, 2020 @08:50AM (#24968085)

It's not fixed yet. It's the same as this issue: https://github.com/pftf/RPi4/issues/99

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Re:Raspberry Pi 400 Desktop PC by kingosticks on Monday November 02, 2020 @09:02AM (#24968185)

Shame, tianocore/edk2-platforms#22542627 sounded really promising!

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