RetroPie 4.6 multiboot from USB Hard drive

[RandomSamurai]

I am currently trying to get a multi boot to work on a Pi4-4gb in a Nespi4 case. I have Pinn installed on a small partition on an SSD (pi has already been set up to run from usb when no SD is installed), which boots without an issue. I select the three OSes I want to use. Rasbian, OpenElec and Retropie.

On finishing the first 2 work without an issue. However, RetroPie throws up errors. start4.elf: is not compatible USB-MSD boot requires newer software

The interesting thing is that if I start again and install just RetroPie, then no issues.

I will try setting it up with SDcard as the boot device, but still pointing to the SSD for the main installs. While I can't 100% remember, but I think in that case all 3 OSes worked. If it does, I suppose I could run it that way, but really wanted to run just from the SSD.

[procount]

I'll run some checks on Retropie. It may just need the firmware updating as you say.

[achessoux]

I have the same issue with 2020-09-03 firmware installed. It is the latest critical (the stable version of December does not work - bug is raised in firmware github). Raspbian, recalbox, librelec work fine, but retropie... Starts.elf is not compatible... If anyone has an idea....

Raspberry Pi 4b 4Gb with x735 (power management) and x872 (for NVMe SSD)

[ur7x]

I'm trying to boot from a x872 with a Samsung 970 Pro NVMe SSD. Requires a plug/unplug for the RPi4 to see the SSD. I know that Geekworm does not recommend Samsung Drives due to "EMF interference problems" Does anyone have a list of tested SSDs that work with the x872 adapter?

[achessoux]

@ur7x : It should solve your issue : https://github.com/raspberrypi/firmware/issues/1515#issuecomment-761245134

[ur7x]

Thanks, tried that.. the usb plug unplug problem remains.
Oh and for what it is worth, when I did the SUDO update it did not change my system... I was already on the latest version

[DerangedPineapple]

Same thing happens to me with Retropie 4.6.

I have usb ssd 128gb and installed LibreELEC 9.2.6 (updated to latest beta) and Retropie 4.6 and I get the same message USB-MSD boot requires newer software when trying to boot Retropie.

Rspi bootloader is 18.3.2021 1b43d5b6

LibreELEC boot and works just fine. Maybe more up to date Retropie would work like 4.7.1?

Any guide how to update Retropie within PINN?

EDIT I was checking retropie's releases change logs and it seems that Retropie 4.6 does not support usb ssd boot. Support for that was added in version 4.7

Anyways, it would be nice to be able to install up to date version of retropie via PINN, currently I only see 4.6 version that's already almost year old. 4.7 was released november 2020 and it got hotfix also in the same month.

Taken from retropie docs (https://retropie.org.uk/category/releases/) under title Changes since 4.6: Updated to the latest Raspberry Pi OS Buster image, with support for USB boot on the Pi4.