TS-7250-V3 Bullseye Getting started
Once installed, the default user is "root" with no password.
This image can be written to a USB drive, or to the eMMC. For development, a USB thumbdrive will be simplest. If a bootable USB drive is connected this will take priority over other boot media. Plug in a USB drive and check the last output from "dmesg" to get the USB disk. For example, this may be /dev/sdc.
# Erase all older partitions sudo sgdisk --zap-all /dev/sdc # Create one GPT Linux partition sudo sgdisk -n 0:0:0 -t 0:8300 /dev/sdc # Create a filesystem and mount sudo mkfs.ext4 /dev/sdc1 sudo mkdir /mnt/usb/ sudo mount /dev/sdc1 /mnt/usb/ # Extract downloaded image: sudo tar --numeric-owner -xf tsimx6ul-debian-bullseye-latest.tar.xz -C /mnt/usb/ sudo chmod 755 /mnt/usb/ sudo umount /mnt/usb/
These commands will also work while booted from a USB drive to rewrite the eMMC. Instead of /dev/sdc you would use /dev/mmcblk0, and instead of /dev/sdc1 you would use /dev/mmcblk0p1.