Back to Kernel001WalkThrough The kernel bootup goes through three steps. * BootStrapFromPcBios * ThirtyTwoBitInitialization * InitTask The boot directory of Linux 0.01 contains head.s and boot.s. Click the Comments column to read Linus's comments in the source file. ||||File||Descriptions||Comments|| ||||boot.s||Bootstrap loader to be executed from BIOS startup||BootComments|| ||||head.s||32-bit startup block for linux. Calls init _main()||HeadComments||