First post, by cprieto
I got a nice 486 mobo (OPTi 486WB Mainboard) with an AMI BIOS, this board comes without IDE or FDD controllers so I got a LCS-6624G Winbond ISA controller to connect a floppy disk drive and an SDD IDE card adapter with a 4GB SDD card. The BIOS is kind of old (I think around 1990-92) and I noticed it doesn't support LBA so I put the correct sec/heads/etc... in the BIOS and reported 3.8GB in size (3870 MB or something like that).
Once booted, MSDOS 6.22 fdisk reports the correct disk size (3.8GB) but it says the max disk size is 512MB (or something like that). Yes, I formatted the drive and as MSDOS told me, the disk size is now 512MB.
I had been reading this https://www.win.tue.nl/~aeb/linux/Large-Disk-4.html but I don't fully understand, what does set this size? the BIOS? the Winbond ISA controller for the disk? definitely not the OS (MSDOS 6.22 reports the card size correctly when the disk is LBA).
And just to confirm, I cannot do much to handle this 4GB card with this mobo? is that correct or there is any trickery out there to make it work?
Thanks a lot for your help, any information, reading or guidance about this would be highly appreciated!