Date: Tue, 25 Sep 2001 19:59:22 -0700 From: Chip <chip@wiegand.org> To: swear@blarg.net (Gary W. Swearingen) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FDISK Partition Editor Question Message-ID: <01092519592204.96094@chip.wiegand.org> In-Reply-To: <4ed74evhqu.74e@localhost.localdomain> References: <01092516402903.96094@chip.wiegand.org> <4ed74evhqu.74e@localhost.localdomain>
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On Tuesday 25 September 2001 18:54, you wrote: > Chip <chip@wiegand.org> writes: > > Name PType Desc Subtype Flags > > ---------------------------------------------------- > > - 6 unused 0 > > ad0s1 3 FreeBSD 165 C > > - 6 unused 0 > > > > Now when I choose to Set Bootable, I am assuming I do that to the ad0s1 > > partition, right? What are the other two partitions? And why are there 3 > > of them anyway? I choose the option to use the entire disk afterall. > > I think it's more accurate to say that there is only 1 primary partition > (slice) and 2 unused disk areas. I suppose that one could have as many > as 4 primary partitions and 5 unused disk areas. > > I'm suprised that doesn't say something about C/H/S and sizes. If it > did, I think you'd see that there's one track (one head, one cyl) > reserved for the MBR and nothing else I know about. FreeBSD seems > to always use track boundaries as slice boundaries. > > That doesn't explain the last type-6 area, unless maybe you asked for > a certain number of cylinders instead of using the remaining number > of bytes (which would be a multipe of one track), and maybe it left the > last cylinder (or cylinder minus a track?) unused. I've never see that, > though I always see the first unused area. The c/h/s stuff I just left out because of space. The last type-6 partition is the oddity. Even though I select Use Entire Disk, it still leaves behind that same amount of space. When I choose C to create the partition it shows the amount of space available, I assume it shows all the disk space minus the boot area, and I just select all of it, and it leaves that little type-6 area there. Too strange. It's only about 2 megs, so no big deal, just curious. -- Chip > BTW, a similar thing goes on with the secondary partitions (BSD > "partitions") within the primary partitions. The primary partition > has a boot record and something like 16 sectors of other disklabel+ > secondary boot code and, IIRC, unused areas to make some secondary > partition and track (or cylinder?) boundaries line up. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- -- Chip W. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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