Re: FAT32?

["M. Schatzl" <lists@xxxxxxxxxxxxxxx>]

Adonijah wrote:
> Simon 'corecode' Schubert wrote:
>
> > On 22.07.2004, at 02:27, M. Schatzl wrote:
> >
> > > I encountered strange behaviour related to FAT32-partitions. Since I 
> > > have 3 IDE's in the box, the mount-command would be (see fdisk output 
> > > at the end of the message):
> > >  mount_msdos /dev/ad2s4 /mnt
> > >
> > > This fails with an "mount_msdos /dev/ad2s4: Invalid argument". Same 
> > > error if i append a "c" at the end. This machine has another FAT32 
> > > partition on the first disk. Exactly the same here.
> >
> >
> > [snipsnap]
> >
> > > ******* Working on device /dev/ad2 *******
> > > parameters extracted from in-core disklabel are:
> > > cylinders=159560 heads=16 sectors/track=63 (1008 blks/cyl)
> > >
> > > Figures below won't work with BIOS for partitions not in cyl 1
> > > parameters to be used for BIOS calculations are:
> > > cylinders=159560 heads=16 sectors/track=63 (1008 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 131,(Linux filesystem)
> > >     start 63, size 97713 (47 Meg), flag 80 (active)
> > >         beg: cyl 0/ head 1/ sector 1;
> > >         end: cyl 96/ head 15/ sector 63
> > > The data for partition 2 is:
> > > sysid 130,(Linux swap or Solaris x86)
> > >     start 97776, size 2539152 (1239 Meg), flag 0
> > >         beg: cyl 97/ head 0/ sector 1;
> > >         end: cyl 1023/ head 15/ sector 63
> > > The data for partition 3 is:
> > > sysid 131,(Linux filesystem)
> > >     start 2636928, size 5859504 (2861 Meg), flag 0
> > >         beg: cyl 1023/ head 15/ sector 63;
> > >         end: cyl 1023/ head 15/ sector 63
> > > The data for partition 4 is:
> > > sysid 5,(Extended DOS)
> > >     start 8496432, size 152340048 (74384 Meg), flag 0
> > >         beg: cyl 1023/ head 15/ sector 63;
> > >         end: cyl 1023/ head 15/ sector 63
> >
> >
> >
> > this is not a FAT slice. it's a extended slice. the FAT slices are 
> > *inside* of that. This reminds me of rewriting fdisk...
> >
> > you have to specify the simulated extended slice number 5 (at least) 
> > to access it, like chris already wrote: ad2s5/ad2s5c
>
>
> Actually, I have an extended DOS partition and to access the logical 
> partition within I had to create as0s5, as06, ad0s7, ad0s8 and so on. 
> That worked, nothing else did.

A new world created obviously a lot of additional device nodes. But 
even when I try looping over all ad2*-devices to get the ones which 
mount without error, there is exactly no data on them. I verified the 
existance of data on that disks several time with serveral systems. 
Got to track this down a bit more.

/m