BOOTSZ
bcopy(device->boot_sector + BOOTSZ, install->stage1_buf + BOOTSZ,
SECTOR_SIZE - BOOTSZ);
(void) memcpy(Bootblk->bootinst, &BootCod, BOOTSZ);
(void) memcpy(Bootblk->bootinst, &BootCod, BOOTSZ);
char bootinst[BOOTSZ];