We are far off topic now and I probably should not admit this but ... I've installed both DOS 3.3 and DOS 5 on the same machine lately. And yes, I had to use 32MB partitions.
I wanted to be able to dual boot my machine (a PCjr, 1983) to both operating systems. DOS 3.3 uses an earlier variant of FAT16, which is only good up to 32MB. The FAT16 that everybody else is familiar with is more correctly called FAT16B, and that allows for partitions up to 2GB. To be able to have both DOS 3.3 and DOS 5 keep the same view of drive letters, both are installed in a primary partition and use an extended partition with the older version of FAT16 being used on some logical drives to hold common data. I wrote a little command line "boot manager" to hide the partition that is not in use so that drive letters don't shift. (DOS 3.3 can't see the DOS 5 partition, but if the DOS 3.3 partition is not hidden DOS 5 will see it.) Assuming a more recent machine (last 10 years?) DOS using a normal INT13 BIOS can see up to 8GB of a drive. To see more you need extended INT13 BIOS function. I think that 8GB is more than enough for any DOS system I'm ever going to run ... Mike PS: At some point I have to get FreeDOS running on the PCjr. ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
