On Thu, 16 May 2024 at 13:28, Wilhelm Spiegl via Freedos-devel <freedos-devel@lists.sourceforge.net> wrote: > > I ran one more test with zoo. It runs with FAT16 998 MB but not with FAT16 > 1025 MB.
Below 1GB FAT16 uses 8kB clusters. From 1GB-2GB it uses 16kB ones. (Below ½GB it uses 4kB.) When I was deploying FAT16 boxes I considered 0.99GB volumes the maximum permissible inefficiency. Once I got PartitionMagic I discovered that by resizing the C: drive of a PC with a 1.2GB drive to 0.99GB, you regained more usable disk space than you lost. In other words with Win95 or 95A, a 0.99GB partition could hold more files than a 1.2GB partition. So I shrank it, defragged, and made a 2nd D: partition of 200MB and put the Windows swap file in it. The result was _more_ free disk space on C: _after shrinking it by 200MB_ than before. So, yes, that points to a cluster size handling problem in ZOO. When FAT16 with large clusters was invented (in Compaq DOS 3.31) disks in the gigabyte range were unimaginable. DOS 3.2 only allowed a max of 64MB of hard disk, in one primary and one logical partition of max 32MB each. DOS 3.1 only allowed one partition per hard disk at all (AFAICR!). -- Liam Proven ~ Profile: https://about.me/liamproven Email: lpro...@cix.co.uk ~ gMail/gTalk/FB: lpro...@gmail.com Twitter/LinkedIn: lproven ~ Skype: liamproven (+44) 7624 277612: UK: (+44) 7939-087884 Czech [+ WhatsApp/Telegram/Signal]: (+420) 702-829-053 _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
