The Neoware CA16 has a standard PC Award BIOS.
The boot options are
There is a USB pen-drive creation tool in Tinycore Linux. I had previously used this to make a bootable pen-drive that I used quite happily with the Fujitsu Siemens A250 so....
I set the "First Boot Device" to USB-HDD and the "Second Boot Device" to Disabled, plugged the pen drive in and booted the CA16. It ran the native Linux! I unplugged the DOM. It then complained about the lack of operating system. I ran the Tinycore USB install again and this time picked the d option that formats the USB pen drive with a FAT32 partition (as opposed to an ext2 partition). Still no joy. Finally I ran the USB Install program again and picked the final option of z that creates a ZIP drive look-alike on the pen drive. Having gone back into the BIOS and set the boot device to USB-ZIP it successfully booted Tinycore Linux 2.11 from the pen drive.