Compute Module • Using eMMC as MSD after booting from NVME

CM5 and CM5IO

I have been able to follow the forum advice to properly mount and configure an OS on the eMMC.
I've booted off of the eMMC successfully.

Next, I installed an NVMe device, adjusted my config.txt to mount it using pcie 3, and rebooted.
I used the Raspberry Pi Imager on the Pi to install an empty FAT32 filesystem on the NVMe device.
I was able to see the NVMe SSD mounted on the desktop.

Then, I used SD Card Copier to clone the OS from eMMC to the NVMe disk.
I ran raspi-config and modified the boot order to boot off NVMe if available.
One odd warning about an old rpi-eeprom (last version was Nov 2024), but I went for it anyway.

Upon reboot, I see I was able to boot from the NVMe disk.
However, I didn't see the eMMC disk mounted on the desktop.

I have done a lot of web searches and searches on this forum, but was unable to see anyone discussing booting from NVMe, but then accessing the eMMC as a Mass Storage Device (MSD).

I believe I can use the Raspberry Pi Imager to re-image the eMMC disk, but I want to use the eMMC as bulk storage, or make adjustments to the eMMC image before removing and deploying the CM5 into production.

Is it as simple as installing J2 and restarting?

Statistics: Posted by 8mhz — Mon Jan 20, 2025 11:43 pm — Replies 1 — Views 26

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