RISC OS Open: Forum: SD Card for Pi and BeagleBoard?

Oct 21, 2015 10:29am

As an experiment, I have just used CloneDisc to copy a Pi SD card, and checked that the clone worked. I then used SystemDisc to copy files from a working BeagleBoard SD card into the Loader partition/file, so that the Loader partition contents are now…

BOOT/SCR      BB
BOOTCODE/BIN  Pi
CONFIG/TXT    Pi
FIXUP/DAT     Pi
MLO           BB
RISCOS        BB
RISCOS/IMG    Pi
START/ELF     Pi
U-BOOT/BIN    BB

The resulting SD card still boots and runs on my Pi.

Should I be expecting it to run on my BeagleBoard?
Because nothing seems to happen at all!

Have I missed something, or am I asking the imposible?

Oct 21, 2015 10:38am

Chris Hall (132) 3554 posts

I would use CloneDIsc to create an identical disc to the Pi. I would then quick format the FAT partition under Windows (the Loader link is not damaged by this), then put the file MLO in (the BB needs this to be first) then copy the other files in. Make sure they are all capitalised. Then it should work. It is also possible to boot into Linux on the BB if the user button is pressed so you can have a triple boot option but that is left as an exercise for the reader. Recommend a CMOS widget on both machines.

Oct 21, 2015 10:39am

David Feugey (2125) 2709 posts

With a PC, you see the same files on the DOS partition?

Oct 21, 2015 11:30am

Raik (463) 2061 posts

I use the same card for my Pandora, Beagleboard (not xM) and Pi B. All is working.
Only the xM need MLO etc. But for this I missing the unenv . I’m not at home and I can not look at.

Oct 21, 2015 3:32pm

Martin Avison (27) 1494 posts

put the file MLO in (the BB needs this to be first)

That was the clue I wanted! I vaguely remembered something about file sequence, but could not find any info.

To avoid Windows, I formatted a SD card, added a Loader file/partition using SystemDisc, put MLO in first then the rest of the BeagleBoard loader files, then the Pi loader files. I then copied all the other RISC OS stuff from the working SD card.

It now boots in both Pi and BB. Thanks for the clues.

SD Card for Pi and BeagleBoard?

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Oct 21, 2015 10:29am Martin Avison (27) 1494 posts	As an experiment, I have just used CloneDisc to copy a Pi SD card, and checked that the clone worked. I then used SystemDisc to copy files from a working BeagleBoard SD card into the Loader partition/file, so that the Loader partition contents are now… `BOOT/SCR BB BOOTCODE/BIN Pi CONFIG/TXT Pi FIXUP/DAT Pi MLO BB RISCOS BB RISCOS/IMG Pi START/ELF Pi U-BOOT/BIN BB` The resulting SD card still boots and runs on my Pi. Should I be expecting it to run on my BeagleBoard? Because nothing seems to happen at all! Have I missed something, or am I asking the imposible?

Oct 21, 2015 10:38am Chris Hall (132) 3554 posts	I would use CloneDIsc to create an identical disc to the Pi. I would then quick format the FAT partition under Windows (the Loader link is not damaged by this), then put the file MLO in (the BB needs this to be first) then copy the other files in. Make sure they are all capitalised. Then it should work. It is also possible to boot into Linux on the BB if the user button is pressed so you can have a triple boot option but that is left as an exercise for the reader. Recommend a CMOS widget on both machines.

Oct 21, 2015 10:39am David Feugey (2125) 2709 posts	With a PC, you see the same files on the DOS partition?

Oct 21, 2015 11:30am Raik (463) 2061 posts	I use the same card for my Pandora, Beagleboard (not xM) and Pi B. All is working. Only the xM need MLO etc. But for this I missing the unenv . I’m not at home and I can not look at.

Oct 21, 2015 3:32pm Martin Avison (27) 1494 posts	put the file MLO in (the BB needs this to be first) That was the clue I wanted! I vaguely remembered something about file sequence, but could not find any info. To avoid Windows, I formatted a SD card, added a Loader file/partition using SystemDisc, put MLO in first then the rest of the BeagleBoard loader files, then the Pi loader files. I then copied all the other RISC OS stuff from the working SD card. It now boots in both Pi and BB. Thanks for the clues.