Manuel Bouyer <bouyer@antioche.lip6.fr> writes:

> On Mon, Jul 23, 2001 at 12:34:00AM -0400, lainestump@rcn.com wrote:
> > So: 1) Why doesn't the fake disklabel that's generated have all the
> > stuff that mbrlabel sees?
> 
> Because it would bloat the kernel too much ?

Would a read of another sector, and a bit of arithmetic really bloat a
4MB kernel that much?

> > and 2) Since it doesn't, how do I get all
> > the partitions mounted without writing a disklabel to the disk (since
> > that will apparently screw up the boot record for the existing OS,
> > right?)
> 
> mbrlabel should be able to write an in-core disklabel (that is, a disklabel
> maintained in kernel memory but not written to disk). Once you've run
> mbrlabel, what does disklabel say ?

No joy, see below - mbrlabel says that it has updated the in-core
disklabel with the other partitions, but disklabel still just shows
the one partition, and mount can't find the others either:


**SU**:dalgic:~>mbrlabel -w wd0
Found MSDOS partition; size 8193087 (4000 MB), offset 63
  skipping existing MSDOS partition at slot e.
Found MSDOS partition; size 8193087 (4000 MB), offset 8193213
  adding MSDOS partition to slot a.
Found NTFS partition; size 8193087 (4000 MB), offset 16386363
  adding NTFS partition to slot b.
Found MSDOS partition; size 8209152 (4008 MB), offset 24579513
  adding MSDOS partition to slot c.

8 partitions:
#        size    offset     fstype  [fsize bsize cpg/sgs]
 a:   8193087   8193213      MSDOS                      # (Cyl. 8128*- 16256*)
 b:   8193087  16386363       NTFS                      # (Cyl. 16256*- 24384*)
 c:   8209152  24579513      MSDOS                      # (Cyl. 24384*- 32528*)
 d:  80418240         0     unused      0     0         # (Cyl.    0 - 79779)
 e:   8193087        63      MSDOS                      # (Cyl.    0*- 8128*)
 f:  24595515   8193150     unused      0     0         # (Cyl. 8128*- 32528*)

Updating in-core disk label.
**SU**:dalgic:~>disklabel wd0
# /dev/rwd0d:
type: ESDI
disk: IC35L040AVER07-0
label: fictitious
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 16383
total sectors: 80418240
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0 

8 partitions:
#        size    offset     fstype  [fsize bsize cpg/sgs]
 d:  80418240         0     unused      0     0         # (Cyl.    0 - 79779)
 e:   8193087        63      MSDOS                      # (Cyl.    0*- 8128*)
 f:  24595515   8193150     unused      0     0         # (Cyl. 8128*- 32528*)
disklabel: boot block size 0
disklabel: super block size 0