From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 20 Jun 2001 14:01:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 20 Jun 2001 14:01:04 -0400 Received: from burdell.cc.gatech.edu ([130.207.3.207]:32528 "EHLO burdell.cc.gatech.edu") by vger.kernel.org with ESMTP id ; Wed, 20 Jun 2001 14:00:51 -0400 Message-ID: <3B30E4CC.3794331@cc.gatech.edu> Date: Wed, 20 Jun 2001 14:00:44 -0400 From: Josh Fryman Organization: CoC, GaTech X-Mailer: Mozilla 4.77 [en] (X11; U; SunOS 5.7 sun4u) X-Accept-Language: en MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: IDE drives mis-reporting size... bug or feature? Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org hi all, this is an odd one. i think it's technically a feature but might be perceived instead as a "bug". anyway, i've got a pair of Ultra100 Maxtor 52049h4 20GB drives, on a Promise Ultra 100 (PDC20267) controller. the drives were popped in with the jumper on for the 4096 cylinder limit forced. (it's a long story as to why.) the other jumpers were set normally for master/slave config. the promise controller recognizes the drives on boot-up init as being what they are - ~20GB - and continues on merrily. Windows 2000 recognizes the drives as ~2GB in size, due to the jumper. it's observing the 4096cyl limit on the drive in some way. (remove the jumper and it sees ~20GB too.) Linux 2.4.3 recognizes the drives as ~20GB regardless of the jumper. so, is this a bug or feature? is windows or linux not working right here? what *should* be seen with the drive jumpered such? cheers, josh