From: jj4public@gmail.com   
      
   On Tue, 19 Oct 2021 22:37:53 -0700 (PDT), muta...@gmail.com wrote:   
   > For PDOS-generic, I will be doing BIOS calls to a special   
   > BIOS that supports fread/fseek-like calls, and treats a   
   > hard disk, or hard disk image, as just a flat file.   
   >   
   > It occurred to me that I should be able to point the BIOS   
   > to an ISO CD image and allow the OS to fread/fseek over   
   > that too.   
   >   
   > Is that something that a BIOS would be technically capable   
   > of doing dynamically with a real CDROM?   
   >   
   > Thanks. Paul.   
      
   Loading/booting an ISO file is the job of an OS. Not the BIOS.   
      
   There's El-Torito specification, but AFAIK, it's not available if it's not   
   used for booting an OS; and it can not be manually enabled if the OS wasn't   
   booted using El-Torito.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)