Date: Tue, 31 Jul 2007 08:18:39 +0200 From: Rolf G Nielsen <lazlar@lazlarlyricon.com> To: freebsd-questions@freebsd.org Subject: Re: Installation problem Message-ID: <46AED43F.5090800@lazlarlyricon.com> In-Reply-To: <200707310501.l6V51TFx014271@app.auscert.org.au> References: <200707310501.l6V51TFx014271@app.auscert.org.au>
next in thread | previous in thread | raw e-mail | index | archive | help
This is a multi-part message in MIME format. --------------040700060404050205030401 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Joel Hatton wrote: > On Mon, 30 Jul 2007 21:46:44 -0700, Garrett Cooper wrote: >> Rakhesh is correct. >> >> SATA / PATA drives show up under ad[m]s[n][l], where m is the disk = >> number (zero based), n is the slice, aka partition number in the non-B= SD=20 >> (/Solaris?) world, number (zero based), and l is the respective letter= =20 >> for the partition (it can vary depending on the purpose, a being root,= b=20 >> slice, c all of the disk, [d-j?], other values / relevances. >> SCSI / SAS is almost exactly the same. The only difference is 'ad' = >> is replace with 'da'. >=20 > There is a difference between SATA and PATA in one respect (and I'm sur= e > I'll be corrected by a developer if my experience is unique). PATA driv= es > appear to be allocated ad0-3, SATA drives begin above that. So, ad4 can= > (and may in this case) be the first and only fixed disk in the system. > This was certainly the case with my last SATA system. >=20 > cheers, > joel > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd= =2Eorg" >=20 >=20 >=20 If there are PATA channels on the motherboard (which there are on most=20 motherboards, I believe) they're most likely the primary and secondary=20 ATA channels, making the SATA channels the third and above. If you have=20 the ATA_STATIC_ID option in the kernel, the SATA drives will then show=20 up ad ad4 and above, whether or not there are any PATA drives connected. = With the ATA_STATIC_ID option the primary master is ad0, primary slave=20 is ad1 and so on, whether or not there are any drives connected. If you=20 remove the ATA_STATIC_ID option, the ATA drives (PATA and SATA) will be=20 assigned the lowest number not in use, so with no PATA drives connected, = the first SATA drive will be ad0, the second one will be ad1 and so on. This is my experience, but I'm not a developer, so there may be some=20 twists that I've missed, and if so, I'm sure someone will correct me. :) --=20 V=C3=A4nligen / Sincerly, Rolf Nielsen --------------040700060404050205030401--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?46AED43F.5090800>