﻿id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
8739	Checksum error in BIOS function int 13h, ah=48h (extended get drive parameters) => Fixed in SVN	madanra		"I've started writing an OS, and noticed that the BIOS function 13h, ah=48h (extended get drive parameters, see http://www.ctyme.com/intr/rb-0715.htm for Ralf Brown's description) appears to give an incorrect checksum. In the description of the function, Ralf Brown says ""checksum of bytes 1Eh-40h (two's complement of sum, which makes the 8-bit sum of bytes 1Eh-41h equal 00h)"". On Bochs and VirtualPC, this is the case, but on VirtualBox the byte sum is FFh."	defect	closed	virtual disk	VirtualBox 4.0.4	fixed	bios drive parameters checksum		other	other
