Fdisk
https://youtu.be/satl8PNW_DI
However you'll want to use a WinME bootdisk as it's version of fdisk supports larger drives
https://www.bootdisk.com/bootdisk.htm
Once you create the partitions reboot using your Win98 disk/CD and carry on as normal
Ram
Easiest way is probably the RLoew patch. It has instructions in the zip but no youtube video I'm afraid
His family kindly made this freeware when the creator passed away, so its obviously no longer supported
https://archive.org/details/PATCHMEM
The good thing is 2GB should still install Windows without crashing IFAIK it just struggles to address it all.
Some games may have issues, you can "eat up " ram with a ramdisk which is what I do but worry about that after you have the system up and running 😀
That motherboard takes DDR400 PC3200 RAM. It doesn't have dual channel or anything like that so no need to install in pairs.