10 pounds in a 5 pound bag..

[John H Merritt]

In article <1990Aug2.082157.853 at urz.unibas.ch> doelz at urz.unibas.ch writes:

[material deleted]

>
>Concerning the repartitioning: If you are daring enough and have reliable 
>backups on hand, you could try to use the standalone fx in order to 
>modify partition sizes and/or create new ones. Take care of the different
>disk types, because blocks and cylinders are different dependent on the 
>model you are entering in the first questions of fx. There is an article 

Just have a calculator handy :-)

>in a recent 'pipeline' issue about using fx. A caveat is to be considered 
>here: Though fx is capable to have up to 9 partitions, SGI is using 

                                          ^^ NO. The answer is 16

>only 0, 1, 5 and 6 in the /dev/dsk and /dev/rdsk. This means that you 
>need to create new special files (see mknod(1M)) in order to use partition 
>2 or 3. You shouldn't touch 7, 8, or 9 because these partitions are special. 

Partitions you can use for making more than one filesystem are:
0 through 6, 11 through 16

Partition 7 can be used to partition the entire disk as one large file system.


Warning: [from the peripheral guide]
   Do not use the two partitions (8 or 9), or the largest parition (10)
   for mounting file systems.  8 and 9 contain header and replacement
   track information.  The largest partition represents the entire disk,
   including the header.  These partitions contain valuable information
   which you must not overwrite.  If you do, you will be unable to access
   information on your disk.  

Actually, I've written to some of these sacred partitions and after a
couple of days this warning rang true :-)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
John H. Merritt                   #  Yesterday I knew nothing,
Applied Research Corporation      #  Today I know that.
merritt at iris613.gsfc.nasa.gov     #