Trying to understand the default boot process (eMMc / uSD) on BeaglePlay

General Discussion
,
1

Following the “Getting Started” guide, I copied the latest xfce software image onto a uSD card.

I then inserted the uSD into my BeaglePlay board and powered it up.

I was surprised (good and bad) by what happened next… sequence on left is when uSD is inserted and sequence on right is when boot up from eMMC

BeaglePlay_Bootup_eMMC_uSD
BeaglePlay_Bootup_eMMC_uSD1920×957 120 KB

  1. The bootup process gave the uSD card priority over eMMC. This is certainly handy for most use cases, but how does one change this selection / priority process, should you only want eMMC to be used by default.

  2. The default uSD option (no. 4 shown in the list), did not behave as expected. It still copied the image across to the eMMC. How did this happen?

image
image854×942 115 KB

2

u-boot currently scans for extlinux.conf… If you want u-boot to ignore the microSD, make sure this path/file doesn’t exist in the first partition /extlinux/extlinux.conf…

Or, just remove microSD…

That’s normal, yes i need to reword the menu option on the flasher image. For background, the ‘flasher’ and ‘normal’ images are the same, except for the finalization script running ‘sed’ on /extlinux/extlinux.conf to convert it before upload to our servers…

@Gerrikoio does this look better?

Flasher Image

Scanning mmc 1:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
BeaglePlay microSD (extlinux.conf)
1:      microSD Recovery
2:      microSD disable BCFSERIAL
3:      copy microSD to eMMC (default)
4:      microSD

Normal Image

Scanning mmc 1:1...
Found /extlinux/extlinux.conf
Retrieving file: /extlinux/extlinux.conf
BeaglePlay microSD (extlinux.conf)
1:      microSD Recovery
2:      microSD disable BCFSERIAL
3:      copy microSD to eMMC
4:      microSD (default)

Test image will be located here… Index of /rootfs/snapshot/2023-12-28/bullseye-minimal-arm64 (now uploaded)…

Regards,

2 Likes
3

Yes it does, thanks.