Re: Can't mount ad0s2 - sourced

2003-06-16 Thread Malcolm Kay
On Mon, 16 Jun 2003 22:42, Brian Astill wrote:
> On Mon, 16 Jun 2003 08:42 pm, Malcolm Kay wrote:
> > > > > > Sure there is [a solution]. Show us what fdisk and disklabel
> > > > > > say.
> > >
> > > referring to my being unable to access ad0s2 from FBSD.
> > > The drive is partitioned DOS-DOS-FBSD.
> > > If I set up the partitions Primary1-Primary2-Primary3, WinNT
> > > "hides" Primary2, and I have to "unhide" using Partition Magic
> > > every time I boot into that hateful OS.  However, I CAN acess
> > > Primary2 from FBSD.
> > > However, If I set up the partitions
> > > Primary1-Logical1-Primary2, WinNT is happy, but Logical1 cannot be
> > > mounted by FBSD.
> >
> > Never had occassion to use this but:-
> > It's my understanding that so called logical partitions/slices are
> > available to FreeBSD as slice 5, 6 ...
> > Thus you should be able to mount the elusive partition as ad0s5.
>
> Agreed.  Sorry, been there, done that. Doesn't work if I use
> Primary/Logical/Primary. /dev/ad0s5 exists.
>
>  #mount -t msdos /dev/ad0s2 /mnt/edrive
> doesn't work, either,  if I use Primary/Logical/Primary.  /dev/ad0s2
> does exist.
>
>  I wonder what would happen if I tried to mount ad0s2a?
>  Neither ad0s2a not ad0s2e succeed :-(
> Keeps saying "invalid argument" - /dev/ad0s2a and e both exist, so does
> /mnt/edrive.
> So I'm stuck.

I must say I find this surprising; I wonder whether Partition Magic
has done something to the boot record of the extended partition,
especially the partition table.

What does:
 # fdisk /dev/ad0s2
report?

Malcolm

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Re: Can't mount ad0s2 - sourced

2003-06-16 Thread Brian Astill
On Mon, 16 Jun 2003 08:42 pm, Malcolm Kay wrote:

> > > > > Sure there is [a solution]. Show us what fdisk and disklabel
> > > > > say.
> >
> > referring to my being unable to access ad0s2 from FBSD.
> > The drive is partitioned DOS-DOS-FBSD.
> > If I set up the partitions Primary1-Primary2-Primary3, WinNT
> > "hides" Primary2, and I have to "unhide" using Partition Magic
> > every time I boot into that hateful OS.  However, I CAN acess
> > Primary2 from FBSD. 
> > However, If I set up the partitions
> > Primary1-Logical1-Primary2, WinNT is happy, but Logical1 cannot be
> > mounted by FBSD.
>
> Never had occassion to use this but:-
> It's my understanding that so called logical partitions/slices are
> available to FreeBSD as slice 5, 6 ...
> Thus you should be able to mount the elusive partition as ad0s5.

Agreed.  Sorry, been there, done that. Doesn't work if I use 
Primary/Logical/Primary. /dev/ad0s5 exists.

 #mount -t msdos /dev/ad0s2 /mnt/edrive
doesn't work, either,  if I use Primary/Logical/Primary.  /dev/ad0s2 
does exist.

 I wonder what would happen if I tried to mount ad0s2a?
 Neither ad0s2a not ad0s2e succeed :-(
Keeps saying "invalid argument" - /dev/ad0s2a and e both exist, so does 
/mnt/edrive.
So I'm stuck.

-- 
Regards,
Brian
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Re: Can't mount ad0s2 - sourced

2003-06-16 Thread Malcolm Kay
On Mon, 16 Jun 2003 10:58, Brian Astill wrote:
> On Mon, 19 May 2003 02:52 pm, Andy Farkas wrote:
> > > > Sure there is [a solution]. Show us what fdisk and disklabel say.
>
> referring to my being unable to access ad0s2 from FBSD.
> The drive is partitioned DOS-DOS-FBSD.
>
> If I set up the partitions Primary1-Primary2-Primary3, WinNT "hides"
> Primary2, and I have to "unhide" using Partition Magic every time I
> boot into that hateful OS.  However, I CAN acess Primary2 from FBSD.
> If I set up the partitions Primary1-Logical1-Primary2, WinNT is happy,
> but Logical1 cannot be mounted by FBSD.
>

Never had occassion to use this but:-

It's my understanding that so called logical partitions/slices are available 
to FreeBSD as slice 5, 6 ...
Thus you should be able to mount the elusive partition as ad0s5.
Of course you'll probably need to first make the device:-
  #cd /dev
  #./MAKEDEV ad0s5

> herewith details of the latter case:
> As you can see, fdisk can see the extended partition, but not the
> logical partition inside it. (tho' windoze is happy)
>
> #fdisk /dev/ad0
> *** Working on device /dev/ad0 ***
> parameters extracted from in-core disklabel are:
> cylinders=1027 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=1027 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 2056257 (1004 Meg), flag 80 (active)
> beg: cyl 0/ head 1/ sector 1;
> end: cyl 127/ head 254/ sector 63
> The data for partition 2 is:
> sysid 5,(Extended DOS)
> start 2056320, size 2088450 (1019 Meg), flag 0
> beg: cyl 128/ head 0/ sector 1;
> end: cyl 257/ head 254/ sector 63
> The data for partition 3 is:
> sysid 165,(FreeBSD/NetBSD/386BSD)
> start 4144770, size 12353985 (6032 Meg), flag 0
> beg: cyl 258/ head 0/ sector 1;
> end: cyl 1023/ head 254/ sector 63
> The data for partition 4 is:
> 
>

Since logical slices are rather like primary slices
but referenced from a primary slice or another logical slice,
rather than the MBR, they can usually be "viewed" by 
pointing fdisk at a slice instead of the entire disk:
  #fdisk /dev/ad0s2

Malcolm


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Re: Can't mount ad0s2 - sourced

2003-06-13 Thread Brian Astill
On Mon, 19 May 2003 02:52 pm, Andy Farkas wrote:
> > > Sure there is. Show us what fdisk and disklabel say.
referring to my being unable to access ad0s2 from FBSD.
herewith:

As you can see, fdisk can see the extended partition, but not the 
logical partition inside it. (tho' windoze is happy)

#fdisk /dev/ad0
*** Working on device /dev/ad0 ***
parameters extracted from in-core disklabel are:
cylinders=1027 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=1027 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 2056257 (1004 Meg), flag 80 (active)
beg: cyl 0/ head 1/ sector 1;
end: cyl 127/ head 254/ sector 63
The data for partition 2 is:
sysid 5,(Extended DOS)
start 2056320, size 2088450 (1019 Meg), flag 0
beg: cyl 128/ head 0/ sector 1;
end: cyl 257/ head 254/ sector 63
The data for partition 3 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 4144770, size 12353985 (6032 Meg), flag 0
beg: cyl 258/ head 0/ sector 1;
end: cyl 1023/ head 254/ sector 63
The data for partition 4 is:



#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: 1027
sectors/unit: 16514064
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0   # milliseconds
track-to-track seek: 0  # milliseconds
drivedata: 0 

8 partitions:
#size   offsetfstype   [fsize bsize bps/cpg]
  c: 165140640unused0 0 # (Cyl.0 - 
1027*)



-- 
Regards,
Brian
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