Booting from the USB installer stick

Notice

Security risk

In the default setting, every user who has physical access to the Industrial PC has root rights and thus full control over the system. Restrict access to the Industrial PC to trusted persons.

The TwinCAT/BSD installer stick can be used for repair or data recovery, for example if a faulty process prevents a system start or a faulty TwinCAT project causes a boot loop.

When you boot from the TwinCAT/BSD installer stick, you have access to the fully functional TwinCAT/BSD system installed on the USB stick. In contrast to single-user mode, this allows you to copy important data directly to the USB stick or create a backup after a repair.

Proceed as follows:

1. Boot from the TwinCAT/BSD installer stick and select the shell option.
Booting from the USB installer stick 1:

2. Import the storage pool (zpool) of your TwinCAT/BSD system with the zpool import -fR /tmp/zpool zroot command.

3. First, mount the default dataset with the zfs mount zroot/ROOT/default command. All other datasets will be mounted automatically.

The file systems of the broken system can now be accessed via /tmp/zpool.