Disk Geometry Errors.

[Jerry McAllister]

> 
> One thing that comes to mind, as I read below, is that it appears you
> setup the drives for RAID 1. Then you transplanted to them to a RAID 5
> controller. "Of course" the partition data will be wrong. The hidden
> blocks the two RAID controllers use are probably different and the
> method of storage for RAID 5 is quite different from that used by RAID 1.
> 
> (Worse yet, you may have managed to hose the drives so that any data
> on them is gone.)
> 
> {^_^}   Joanne
> ----- Original Message ----- 
> From: "Lisandro Grullon" <lisandro.grullon at gmail.com>
> 
> Hi Kevin and thanks for repplyng, sysinstall does not crach at all, the
> problem is that the information is not retain by the label. I keep getting
> that contact "Disk Geometry" error when I try fdisk into the volume/drive.
> Any ideas what is happening. let me know what other information you may need
> to assist me further.

I didn't follow all of this thread, so I may be missing something, but
check the FAQs and the list archives.   Geometry error messages and
apparent (but not actual) mismatched have been discussed many times.

Nowdays disk geometry as used by the OS is generally "virtual" and does 
not exactly reflect the actual physical geometry.   In other words, from 
the point of view of how you use it, unless you are creating special driver 
code, the geometry is fiction and, as long as it works, take what the OS 
says and ignore any messages from fdisk.

Now, if it is truly failing, you have non-fictional problems.   

////jerry

> 
> On 5/24/06, Kevin Kinsey <kdk at daleco.biz> wrote:
> >
> > Lisandro Grullon wrote:
> > > Good Morning,
> > >
> > > Last night I was trying installing a new Areca controller 1120 8 ports
> > > using a 5 bay (300GB seagate) drives Raid 5. The main OS is install
> > using the
> > > SATA controller in RAID 1 configuration of the mother board, the
> > addition of
> > > last night was a separate controller I install.The install when good and
> > I
> > > installed my modules in the kernel, now my problem is when I try to
> > > partition the volume using fdisk/label with system install it is giving
> > me
> > > nasty disk geometry incorrect error, can anyone tell me what is this all
> > > about? Thank you.
> >
> > We'd probably need some more information.  Does sysinstall crash?
> > Does the fdisk information get written to disk anyway?  The label?
> >
> > KDK
> >
> > --
> > Zero Mostel: That's it baby!  When you got it, flaunt it!  Flaunt it!
> >                 -- Mel Brooks, The Producers
> >
> >
> 
> 
> -- 
> Lisandro Grullon
> New York City College of Technology
> Division of Continuing Education
> Director of Network Operations
> Lisandro Office:    1718-552-1178
> Lisandro E-mail:   lgrullon at citytech.cuny.edu
> "The only reason for time is so that everything doesn't happen at once.".
> <Albert Einstein>
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