[external sdcard booting]Card did not respond to voltage select!

Hello,

The sd card is ready to boot through the following steps.

3.Check the flash drive’s device name (e.g. /dev/sdb):
$ sudo lsblk -p -d | grep sd
4.Create a new GPT:
$ sudo parted /dev/<sdx> mklabel gpt
Where <sdx> is the device name that your host computer assigned to the flash drive.
For example, if the host computer assigns the flash drive device name sdb, the command is:
$ sudo parted /dev/sdb mklabel gpt
5.Add the APP partition:
$ sudo parted /dev/<sdx> mkpart APP 0GB <size>
Where <size> is the size of the partition. It must be at least 16 GB. It may be larger if the flash drive has enough space.
For example, if <sdx> is sdb and the partition is to contain 16 GB, enter:
$ sudo parted /dev/sdb mkpart APP 0GB 16GB
The device name of the APP partition will be /dev/<sdx>1.
5.Format APP as an ext4 partition and mount it.
$ sudo mkfs.ext4 /dev/<sdx>1
$ sudo mount /dev/<sdx>1 /mnt
You may format APP as ext2 or ext3, but ext4 is strongly recommended because it is faster, more compact, and more reliable.
6.Connect the Jetson device to a host computer and put it into recovery mode, then enter the following commands to generate the rootfs without flashing the device:
$ cd Linux_for_Tegra/
$ sudo BOOTDEV=sda1 ./flash.sh --no-flash <board> sda1
$ sudo mkdir tmp_system
$ sudo mount bootloader/system.img.raw ./tmp_system
$ sudo rsync -axHAWX --numeric-ids --info=progress2 --exclude=/proc ./tmp_system/ /mnt

I tried booting from an external sd card.
Card did not respond to voltage select! I can’t boot with a message saying
I don’t know what’s wrong. Can you give me a solution?

Tegra210 (P3450-0000) # printenv boot_targets
boot_targets=mmc1
Tegra210 (P3450-0000) # boot
Card did not respond to voltage select!

Thank you.

What’s your JetPack version?
Is it a devkit or your custom board?
Nano module with eMMC version or SD card version?

You got too many issues opened, please provide more information about your system setup.
Are you opened topic by a team?

Hello, @kayccc

What’s your JetPack version?
Jetpack 4.6

Is it a devkit or your custom board?
custom carrier board with external sdcard slot.

Nano module with eMMC version or SD card version?
emmc module

Thank you.

Uboot doesn’t not support your extra sd card so it doesn’t work.

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