How to Recover Ubuntu
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Contents
Set Up Ubuntu Host PC
On the Ubuntu host PC, follow these steps to install tools and configure your host PC:
- Install genio-tool and its dependencies. This is used to flash Ubuntu images to the target board.
# Ubuntu 22.04
sudo apt update
sudo apt install python3-pip
pip3 install --upgrade pip
sudo apt install fastboot
pip3 install -U genio-tools
- Add two new udev rules and add your user account to the
plugdev
&dialout
group:
cat << EOT | sudo tee /etc/udev/rules.d/96-genio-board.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", ATTR{idProduct}=="201c", MODE="0660", $ GROUP="plugdev"
EOT
cat << EOT | sudo tee /etc/udev/rules.d/72-aiot.rules
SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", ATTR{idProduct}=="201c", MODE="0660", TAG+="uaccess"
SUBSYSTEM=="usb", ATTR{idVendor}=="0e8d", ATTR{idProduct}=="0003", MODE="0660", TAG+="uaccess"
SUBSYSTEM=="usb", ATTR{idVendor}=="0403", MODE="0660", TAG+="uaccess"
SUBSYSTEM=="gpio", MODE="0660", TAG+="uaccess"
EOT
sudo udevadm control --reload-rules
sudo udevadm trigger
sudo usermod -a -G plugdev,dialout $USER
# completely logout then re-login, or just reboot immediately
loginctl terminate-user $USER # *** desktop will be terminated ***
# sudo reboot
- check if
20(dialout)
and46(plugdev)
are list in the effective group ID ...
id
- check if the genio-tools does work
genio-config
- make sure every item's result is OK
fastboot: OK udev rules: OK (md5: a3b2767b42ee01d7c62bf394400528ae) Serial device write access: OK
Get Ubuntu Recovery Pack Ready
- Obtain this pack through your local Advantech representative and extract it first.
tar xvf ${RECOVERY_PACK}.tgz
Connect the Target Board to the Host PC
- Confirm the power adaptor has been connected to the board.
- Use one Type-A to Type-A USB cable to connect the host PC and the target board (DOWNLOAD supported USB port)
- (optional) Use debug console to monitor flashing process
- Turn the target board power on
Flash Ubuntu Recovery Pack to the Target Board
- First change directory(cd) to the revoery pack directory, and run genio-flash:
cd ${RECOVERY_PACK}
genio-flash
- The tool should have the following output:
Looking for MediaTek SoC matching USB device 0e8d:0003
- The line Looking for MediaTek SoC matching USB device 0e8d:0003 shows that genio-flash tool is waiting for the board to be reset into download mode to start the flash programming procedure.
- Follow these steps to enter download mode:
- Press the DOWNLOAD button and hold it ...
- Press and release the RESET button.
- Press the DOWNLOAD button and hold it ...
- The flash tool should output the following messages:
Jumping to bootstrap at address 0x201000 in AArch64 mode
flashing writable=rootfs.img
< waiting for any device >
- Release the DOWNLOAD button after the tool outputs
< waiting for any device >
- The flash tool should continue with the following message, which shows the progress of writing image content to the storage:
Sending sparse 'writable' 1/17 (261712 KB) OKAY [ 6.936s] Writing 'writable' OKAY [ 19.022s] Sending sparse 'writable' 2/17 (262016 KB) OKAY [ 6.959s] Writing 'writable' OKAY [ 17.793s] Sending sparse 'writable' 3/17 (261922 KB) OKAY [ 6.852s] Writing 'writable' OKAY [ 15.435s] Sending sparse 'writable' 4/17 (253224 KB) OKAY [ 6.600s] Writing 'writable' OKAY [ 11.948s]
- Eventually, the flash tool would report the following logs once it finishes writing the onboard storage and reboot the board:
Sending sparse 'writable' 16/17 (262143 KB) OKAY [ 6.692s] Writing 'writable' OKAY [ 9.236s] Sending sparse 'writable' 17/17 (112636 KB) OKAY [ 2.916s] Writing 'writable' OKAY [ 5.021s] Finished. Total time: 539.208s flashing ubuntu-boot=efi.img Sending 'ubuntu-boot' (12803 KB) OKAY [ 0.331s] Writing 'ubuntu-boot' OKAY [ 0.534s] Finished. Total time: 0.876s Rebooting OKAY [ 0.002s] Finished. Total time: 0.052s