What is the modern solution I could use in Commodore C386SX-LT? It requires selection of disk type in bios, otherwise it won't work. Max setting allows up to 63MB, so would a 64MB CF with IDE adapter work?
Modern hard drives tend to list a CHS geometry of some large number of cylinders, 16 heads, 63 sectors. I'm reading the label on an 18GB IBM Travelstar for that; as CHS only goes up to about 8GB, the listed settings wouldn't cover the entire capacity of the drive.
I think it's better to have the correct number of heads and sectors. It may then be possible to have the operating system use a large number of cylinders than the BIOS supports, while still having compatible geometry otherwise.