Indicators are Bios used and Bios release date
With Award 4.51PG support for HDD bigger than 8GB started late/end 1997/beginning 1998 -> Support up to 32GB
As all these Bios have a BUG with HDD bigger than 32GB Award released a fix to the motherboard manufacturers starting at 7/99 but these manufacturers had to release a new Bios and many did not especially with old Socket-7 Boards .
Then a 64GB BUG was discovered and usually but not always removed with end1999/beginning 2000 Bios
AMI bios is a bit different but with a mid/end 1997 release date it should support at least up to 32GB and sometimes up to 64GB - 1999 releases should support more
From this you will understand that there is not a particular place to check to find out what size HDD is supported, and that even if the Int 13h extension is present there were bugs in some Award BIOSes which prevented you booting to the point where you could use the Int 13h extensions.