now able to print \t (tab = 8 spaces). Haven't tried to go over vga_cursorx >= 80, but it _should_ work..
readblock(): read a block (512 bytes, a sector) from a specified position on a hard drive
fs.c demonstrates the use of readblock by reading the MBR and parsing the partition table. We're able to figure out the sizes and types of hard drive partitions.

Next step: a FAT driver that utilizes this information.