#define ROUND_DOWN(N, S) ((N) & ~((S) - 1))
#define Ke386EraseFlags(x) __asm__ __volatile__("pushl $0 ; popfl\n")
-extern ULONG BootDrive; /* BIOS boot drive, 0-A:, 1-B:, 0x80-C:, 0x81-D:, etc. */
-extern ULONG BootPartition; /* Boot Partition, 1-4 */
extern BOOL UserInterfaceUp; /* Tells us if the user interface is displayed */
VOID BootMain(LPSTR CmdLine);