i am not sure what you mean, if you want to install Red Hat onto a disk that has a previous fat filesystem, then yes, during the install you will get the opertunity to partition and format your drive ...
I want to install Win98 with FAT32 file system, Win2K with NTFS only (I don't prefer FAT32 file system) and Linux into one machine. I have tried before but my machine failure to recognized the 3 OS at ...