I ran
sudo blkid
/dev/mmcblk0p1: SEC_TYPE="msdos" LABEL_FATBOOT="BOOT_MNJRO" LABEL="BOOT_MNJRO" UUID="4E25-E654" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="primary" PARTUUID="d9ecb2aa-9f05-4066-a980-89d6c8b22ee1"
/dev/mmcblk0p2: LABEL="ROOT_MNJRO" UUID="ac0fe79c-a1bf-483c-9352-75deb0452255" BLOCK_SIZE="4096" TYPE="ext4" PARTLABEL="primary" PARTUUID="8a268f2f-4747-4a37-aa09-490201df48ea"
/dev/mmcblk1p1: SEC_TYPE="msdos" LABEL_FATBOOT="BOOT_MNJRO" LABEL="BOOT_MNJRO" UUID="0544-4078" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="1d550000-01"
/dev/mmcblk1p2: LABEL="ROOT_MNJRO" UUID="2223eb3d-914f-4b24-b200-e08454309917" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="1d550000-02"
/dev/zram0: LABEL="zram0" UUID="43483ee0-aa94-4fa6-b174-7e47fabd6941" TYPE="swap"
mmcblk1
device is the eMMC. Then I ran
sudo mount /dev/mmcblk1p2 /mnt
sudo nano /mnt/etc/fstab
and added the content
PARTUUID=1d550000-01 /boot vfat defaults 0 0
PARTUUID=1d550000-02 / ext4 defaults 0 1
Then reboot, and it still wonât boot. After putting the SD card back everything is ok, but is booted from SD card. Do you have any idea how to proceed?