Replaced drive

[Giorgos Keramidas]

On 2004-12-12 18:42, Martin Schweizer <lists_freebsd at bluewin.ch> wrote:
> Am Sun, Dec 12, 2004 at 07:25:51PM +0200 Giorgos Keramidas schrieb:
> > On 2004-12-12 18:19, Martin Schweizer <lists_freebsd at bluewin.ch> wrote:
> > >Am Sun, Dec 12, 2004 at 04:58:45PM +0200 Giorgos Keramidas schrieb:
> > >>On 2004-12-12 15:12, Martin Schweizer <lists_freebsd at bluewin.ch> wrote:
> > >>> Hello list
> > >>>
> > >>> After I replaced my hard drive (with a larger one) I get the following
> > >>> messages in dmeg.boot after reboot. Probably it's only a hint and not an
> > >>> error. How I can resolve this issue? I use FreeBSD 4.10.
> > >>
> > >> Did you use dd(1) to move over the existing partitions and data?
> > >> Judging from the following, it seems you _did_.
> > >>
> > >>> ad0: 39266MB <ExcelStor Technology J340> [79780/16/63] at ata0-master UDMA100
> > >>> ad2: DMA limited to UDMA33, non-ATA66 cable or device
> > >>> ad2: 39266MB <ExcelStor Technology J340> [79780/16/63] at ata1-master UDMA33
> > >>> acd0: CDROM <LTN483> at ata1-slave PIO4
> > >>> Mounting root from ufs:/dev/ad0s2a
> > >>> ad0s1: raw partition size != slice size
> > >>> ad0s1: start 63, end 16064, size 16002
> > >>> ad0s1c: start 63, end 80405324, size 80405262
> > >
> > > Hello Giorgos
> > >
> > > No, I used dump.
> >
> > Weird.  Can I see the output of fdisk and disklabel for that disk?
>
> Here they are:
>
> fdisk:
>
> ******* Working on device /dev/ad0 *******
> parameters extracted from in-core disklabel are:
> cylinders=5005 heads=255 sectors/track=63 (16065 blks/cyl)
>
> Figures below won't work with BIOS for partitions not in cyl 1
> parameters to be used for BIOS calculations are:
> cylinders=5005 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 6,(Primary 'big' DOS (> 32MB))
>     start 63, size 16002 (7 Meg), flag 0
> 	beg: cyl 0/ head 1/ sector 1;
> 	end: cyl 0/ head 254/ sector 63
> The data for partition 2 is:
> sysid 165,(FreeBSD/NetBSD/386BSD)
>     start 16065, size 80389260 (39252 Meg), flag 80 (active)
> 	beg: cyl 1/ head 0/ sector 1;
> 	end: cyl 1023/ head 254/ sector 63

Good, then you have a disk with 255*63*5005 = 80405325 sectors.

> disklabel /dev/ad0:
> # /dev/ad0:
> type: unknown
> disk: amnesiac
> label: fictitious
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 255
> sectors/cylinder: 16065
> cylinders: 5005
> sectors/unit: 80418240
> 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]
>   c: 80418240        0    unused        0     0       	# (Cyl.    0 - 5005*)

Err, this is not right.  The ad0 disk has two slices, ad0s1 and ad0s2.
The ad0s1 slice is DOS, so it doesn't have a disk label.  The ad0s2
slice has a label, but you need to use:

	# disklabel ad0s2

to see that.

> disklabel /dev/ad2:

This is a different disk, which may have other slices too (ad2s1, ad2s2, ...)