This is done on 770. This is my INTERNAL.txt file for a 1 G RS-MMC " FAT 300 SWAP 128 1 ext2 TIMEOUT 10" This should generate a ext2 600 MB and Fat 300 MB and SWAP file. to add 64 MB swap file, with 48 Mhz kernel takes 7 min to make the 64 MB swap file; without 48 Mhz kernel, it takes 13 min to make the 64 MB swap file.