Date: Tue, 19 Sep 2000 01:00:03 +0900 From: "Daniel C. Sobral" <dcs@newsguy.com> To: Marc Tardif <intmktg@CAM.ORG> Cc: "Aleksandr A.Babaylov" <babolo@links.ru>, freebsd-hackers@FreeBSD.ORG, freebsd-fs@FreeBSD.ORG Subject: Re: device naming convention Message-ID: <39C63C03.2C4C26F8@newsguy.com> References: <Pine.LNX.4.10.10009162049500.9098-100000@Gloria.CAM.ORG>
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Marc Tardif wrote: > > If I understand correctly, wd0[a-h] will be the same as wd0s3[a-h] in a > situation where DOS is on first slice, Linux on second and FreeBSD on > third, right? But what if the fourth slice is also FreeBSD? In such a Right. > case, I'll assume you meant "booted slice" instead of "first slice", where > the slice selected when booting will be referred to by the OS as wd0[a-h] > which would translate to "current slice". Confirmation of my assumption > would be appreciated. Nope, he means "first slice", not "booted slice". I think, at some point, it might have changed to "active partition". But the fact is that the wd0[a-h] hack is very gross. Stay away from it, and always use full device specification. > > > 2. If wd0s1 is my first slice, why isn't it named wd0s0? > > wd0s0 == wd0 > > wd0s0a == wd0a > > > I somehow doubt that. Considering wd0s* goes from 1 to 4 inclusively, I > would tend to believe the first slice is wd0s1. The above is incorrect, he misunderstood your question. > > > 4. If I want to use /dev/wd0s2 as a raw slice for reading > > > and writing, what are the steps to follow? > > You can't write several blocks near /dev/wd0s2 beginning. > > Use /dev/wd0 with proper address > > > That is rather risky. Wouldn't it be safer to have a device name I could > dedicate to some purpose. In such a case, I could chown the device to an > appropriate username and group. Furthermore, I could avoid the unfortunate > mistake of overwriting my current FreeBSD fs in case I get the addresses > wrong. He is incorrect. You can use /dev/wd0s2 any way you want, as long as you have nothing of value there. -- Daniel C. Sobral (8-DCS) dcs@newsguy.com dcs@freebsd.org capo@the.secret.bsdconspiracy.net "I demand that my picture show a handsome face, even if it doesn't look like me." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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