modify existing partitions - newbie

[saravanan ganapathy]

--- Jerry McAllister <jerrymc at clunix.cl.msu.edu>
wrote:

> > 
> > Hai,
> > 
> > I just needed to delete some partitions(ad0s1e &
> > ad0s1f) in my existing slice(ad0s1) and recreate
> with
> > some changes. 
> > 
> > 1) I tried using 'sysinstll --> Config --> Label'
> ,
> > then delete e & f , but this couldn't write. It
> says
> > 'unable to write data on ad0' . What is the
> problem?
> > 
> > 2) Tried using 'disklabel -e ad0s1', then a file
> > opens. I deleted the last two lines(e & f) and
> saved. 
> > Now it shows as the following 
> > 
> > # /dev/ad0s1:
> > 8 partitions:
> > #        size   offset    fstype   [fsize bsize
> > bps/cpg]
> >   a: 41943040        0    4.2BSD     2048 16384
> 28552
> >   b:  4194304 83886080      swap
> >   c: 320159322        0    unused        0     0  
>    
> >   # "raw" part, don't edit
> >   d: 41943040 41943040    4.2BSD     2048 16384
> 28552
> > 
> > Is it the correct way to delete the partitions?
> 
> First guess is not having permission.   
> It should be done in single user mode.
> 
> Second guess is the partition you want to delete is
> mounted.
> 
> I have never tried to modify partitions on the disk
> with root on it, 
> so maybe that presents special problems.   You may
> need to boot
> from something else - live CD for example.
> 

Now I tried to create new partitions on the free space
of the existing slice in single mode, but I am getting
the same error as 'unable to write data on ad0' . I am
doing this in root user only. What are all the
permissions should I have for this? 

Or please suggest me to create a partition in another
way?

Sarav



		
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