From 7783ef5d28b5194154a269f3a485deb5e73deab6 Mon Sep 17 00:00:00 2001 From: toilahung Date: Mon, 9 Aug 2021 13:15:54 -0700 Subject: [PATCH] typo: al -> ah --- 07-bootsector-disk/README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/07-bootsector-disk/README.md b/07-bootsector-disk/README.md index 1727c7f..ccbe13a 100644 --- a/07-bootsector-disk/README.md +++ b/07-bootsector-disk/README.md @@ -8,7 +8,7 @@ a disk in order to run the kernel. Thankfully, we don't have to deal with turning spinning platters on and off, we can just call some BIOS routines, like we did to print characters on the screen. -To do so, we set `al` to `0x02` (and other registers with the required cylinder, head +To do so, we set `ah` to `0x02` (and other registers with the required cylinder, head and sector) and raise `int 0x13` You can access [a detailed int 13h guide here](http://stanislavs.org/helppc/int_13-2.html)