I have a multi paritioned microSD card as follows. P1 is the boot partition, P2 and P3 are rootfs partitions. Based on my investigations, I have ensured both P2 and P3 are bootable rootfs. By default, the BBB will boot to P2. By adding mmcpart=3 in /boot/uEnv.txt, I can let the BBB boot to P3. The partition booted to was verified using output from df and seeing which device / was mounted on I would like to control which partition gets booted to using P1 instead of P2. I remove mmcpart=3 in /boot/uEnv.txt in P2. Then in 1 attempt I added a /uEnv.txt with mmcpart=3 in P1, and in another, I added a /boot/uEnv.txt with mmcpart=3 in P1. Both attempts did not work. I have referenced the uboot patch[1] by Robert, but perhaps I have missed something
# fdisk -l /dev/mmcblk0Disk /dev/mmcblk0: 14.5 GiB, 15523119104 bytes, 30318592 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: dosDisk identifier: 0x9582e2f8 Device Boot Start End Sectors Size Id Type/dev/mmcblk0p1 8192 212991 204800 100M 83 Linux/dev/mmcblk0p2 212992 4308991 4096000 2G 83 Linux/dev/mmcblk0p3 4308992 8404991 4096000 2G 83 Linux/dev/mmcblk0p4 8404992 12503039 4098048 2G 5 Extended/dev/mmcblk0p5 8407040 12503039 4096000 2G 83 Linux [1] https://github.com/RobertCNelson/Bootloader-Builder/blob/master/patches/v2017.11/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/1494718876.3098305.1513932864753%40mail.yahoo.com. For more options, visit https://groups.google.com/d/optout.
