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Date:      Fri, 03 Jul 1998 12:48:48 -0600
From:      aaz <187@leopard.com>
To:        Thomas Dean <tomdean@ix.netcom.com>
Cc:        zadonick@ucsub.Colorado.EDU, freebsd-questions@FreeBSD.ORG
Subject:   Re: INSTALL
Message-ID:  <359D2790.11794E0E@leopard.com>
References:  <199807030548.WAA01418@ix.netcom.com>

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Aaaahh, I get it so, I should define 4 master ones of adequate size to be split
into muiltiple filesystems when I go to the next step of assigning the mount
points?

thanks


Thomas Dean wrote:

> Do you really want 6 partitions?  If so, what are these partitions?
> What are you trying to do with the disk?
>
> Look at http://www.freebsd.org/handbook/handbook100.html for a
> clarification of terms and more information.
>
> Don't you want the parts of the disk to be named /dev/wd0s1a through
> /dev/wd0s1f?
>
> A PC or DOS disk has a master partition table with room for 4
> partitions.  To prevent confusion these are called slices in the
> FreeBSD world.  So, there may be only 4 entries in the master
> partition table.  But, each of these master partition table entries,
> or slices, may be sub-divided for use by a specific operating system.
>
> On my computer, sd1 has 1 DOS partition, or in FreeBSD terms, 1 slice,
> shown with fdisk.  But, there are 5 FreeBSD partitions within this
> slice, shown with disk label.  One of these partitions, c, is the
> entire disk, overlapping the other partitions.
>
> # fdisk sd1
> ******* Working on device /dev/rsd1 *******
> parameters extracted from in-core disklabel are:
> cylinders=393 heads=255 sectors/track=63 (16065 blks/cyl)
>
> parameters to be used for BIOS calculations are:
> cylinders=393 heads=255 sectors/track=63 (16065 blks/cyl)
>
> Media sector size is 512
> Warning: BIOS sector numbering starts with sector 1
> Information from DOS bootblock is:
> The data for partition 1 is:
> sysid 165,(FreeBSD/NetBSD/386BSD)
>     start 63, size 6313482 (3082 Meg), flag 80 (active)
>         beg: cyl 0/ sector 1/ head 1;
>         end: cyl 392/ sector 63/ head 254
> The data for partition 2 is:
> <UNUSED>
> The data for partition 3 is:
> <UNUSED>
> The data for partition 4 is:
> <UNUSED>
>
> # disklabel -r sd1
> # /dev/rsd1c:
> type: SCSI
> disk: sd1s1
> label:
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 255
> sectors/cylinder: 16065
> cylinders: 392
> sectors/unit: 6313482
> rpm: 3600
> interleave: 1
> trackskew: 0
> cylinderskew: 0
> headswitch: 0           # milliseconds
> track-to-track seek: 0  # milliseconds
> drivedata: 0
>
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a:    80325        0    4.2BSD        0     0     0   # (Cyl.    0 - 4)
>   b:   465885    80325      swap                        # (Cyl.    5 - 33)
>   c:  6313482        0    unused        0     0         # (Cyl.    0 - 392*)
>   e:   224910   546210    4.2BSD        0     0     0   # (Cyl.   34 - 47)
>   f:  5526360   771120    4.2BSD        0     0     0   # (Cyl.   48 - 391)




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