From owner-freebsd-hackers  Tue Jul  6 23:46:24 1999
Delivered-To: freebsd-hackers@freebsd.org
Received: from phi.sinica.edu.tw (phi.sinica.edu.tw [140.109.7.52])
	by hub.freebsd.org (Postfix) with SMTP id CBAF7150AF
	for <freebsd-hackers@freebsd.org>; Tue,  6 Jul 1999 23:46:06 -0700 (PDT)
	(envelope-from ycheng@phi.sinica.edu.tw)
Received: (qmail 29254 invoked by uid 1005); 7 Jul 1999 06:45:33 -0000
Date: 7 Jul 1999 06:45:33 -0000
Message-ID: <19990707064533.29253.qmail@phi.sinica.edu.tw>
From: ycheng@phi.sinica.edu.tw
To: freebsd-hackers@freebsd.org
Subject: Re: DVD-ram
In-Reply-To: <199907070246.LAA01724@atohasi.mickey.ai.kyutech.ac.jp> <199907070339.VAA88466@panzer.kdm.org>
Reply-To: ycheng@sinica.edu.tw
User-Agent: tin/pre-1.4-981225 ("Volcane") (UNIX) (Linux/2.2.2 (i686))
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

In article <199907070339.VAA88466@panzer.kdm.org> you wrote:
>> 3.5" 650MB and 1.3GB MO drives should handle 512KB/sector(128MB,
>> 230MB, 540MB) and 2048KB/sector media(640MB, 1.3GB).
> The CAM DA driver was specifically designed to handle various sector sizes,
> and should work fine with non-512 byte sector sizes.  If it doesn't, it
> needs to be fixed.

I use "Mitsubishi MCA 640" with Tekram 390F scsi card.
I guess one of error message is from

/usr/src/sys/kern/subr_diskslice.c
	line 308 (or line 314, I am not very sure)
	which is:
	"dscheck: b_bcount %ld is not on a sector boundary (ssize %d)\n"

I think this can help you to find why we say that 2048/sector won't work.

Thank you.


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message