I do not know about Linux, but once you change the bios to anything except version 1, the i-o will not boot QNIX.
The Sandisk can be partitioned, formatted, made active, and SYSed to boot a DOS prompt of WIN95 or WIN98 just as if it were a real hard drive.
The i-o must be booted from a hard drive to set this up, but once it has been set up, the hd can be removed.
The i-o will only boot from an ide device or the Sandisk: no floppy, usb or parallel port device will boot, and QNIX will probably not recognize any of these devices to copy your Linux start-up files from.
I do not know the procedure for installing Linux on a hard drive, but you will need to instal it to the Sandisk from a hard drive.