EMMC OK but SD Card Not

[mcastigl]

Hi,

I'm trying to boot my Nvidia Jetson Xavier Nx Dev Kit Jetson 4.6.4 using the SD Card approach. I have it working with the EMMC but the SD Card is giving me trouble. I should not that I'm using Yocto to build the image.

Whenever I boot from the SD Card I get the following statements:

EXT4-fs (mmcblk0p1): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (mmcblk0p1): couldn't mount as ext2 due to feature incompatibilities
EXT4-fs error (device mmcblk0p1): ext4_get_journal_inode:4459: inode #8: comm mount: iget: checksum invalid
EXT4-fs (mmcblk0p1): no journal found
mount: mounting /dev/mmcblk0p1 on /mnt failed: Invalid argument

I changed my local.conf to add the following lines:

TEGRA_ROOTFS_AND_KERNEL_ON_SDCARD = "1"
MACHINE = "jetson-xavier-nx-devkit"

I visited RidgeRun's site: here

I've tried using both doFlash.sh (with and without --spi-only) and dosdcard.sh and getting the same results as stated above.

For writing the card, I have also tried Etcher instead of dosdcard.sh

Again, if I change it back to the EMMC everything works. Really scratching my head here.

Any Help would be welcome.

• MCASTIGL

[madisongh]

When you say you're switching between SDcard and eMMC, are you using different Xavier NX modules? The Xavier NX development kit comes with a specific module that has an SDcard slot on it, and no eMMC. It's unique to the development kit; the commercial modules have an eMMC and no built-in SDcard slot. Those are different machine configurations in the layer, so make sure you're using the right one for your builds, based on the module SKU.

Otherwise, you can do some verification of the SDcard on your host after you've written it - check its partition table, run fsck on the rootfs partition, that sort of thing. I have sometimes run into problems with old/low-quality SDcards not really getting written properly.