Hi List I have here a Acer-Altos System 4500. It is a 486/33 EISA System with an Altos Basic SCSI Bsc(e) Controller. It has an Altos Multidrop/2 EISA Controller (to controll TCU Boxes that handle RS232 Ports) and a VGA1024i EISA Graphics controller. My mision is to bring that System back to life respectively get access to the Discs. The built in SCSI Disk are running and i have created Images of this Disks in a Linux PC. But i can not boot the System by one of this Disks. I remember that on this disk is some sort of Altos SCO Unix System V installed. Did sombody here on the list have documentation or the original Installationmedia (QIC-525) for that system? Marco