Add to MetaLUN - Clariion CX300

I have a Clariion CX300 that I have a spare LUN on.  I would like to allocate it to a MetaLUN that already consists of several other LUNs.  I was able to expand the MetaLUN successfully.  However, my OS (Server 2003) only sees the new addition as unallocated space.  Am I going to have to use something like Partition Majic or Partition Commander to expand the partition to use the extra space?  The existing data on the I: partition is very critical and needs to stay in tact.
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Since it is not a bootable partition you can just use diskpart to extend it. We have done just this many times at a previous job of mine on our CX300.

As suggested above, you can use DISKPART utility to extend volume but better to have full backup of existing volume for safer side before you extend.
marrjAuthor Commented:
I'm not familiar with the syntax of diskpart.  woudl I do an EXPAND I:
To extend a partition or volume, you must first select the volume to give it the focus, and then you can specify how large to make the extension. To extend a volume, follow these steps:
At a command prompt, type diskpart.exe.
Type list volume to display the existing volumes on the computer.
Type Select volume volume number where volume number is number of the volume that you want to extend.
Type extend [size=n] [disk=n] [noerr]. The following describes the parameters:
The space, in megabytes (MB), to add to the current partition. If you do not specify a size, the disk is extended to use all the next contiguous unallocated space.

The dynamic disk on which to extend the volume. Space equal to size=n is allocated on the disk. If no disk is specified, the volume is extended on the current disk.

For scripting only. When an error is thrown, this parameter specifies that Diskpart continue to process commands as if the error did not occur. Without the noerr parameter, an error causes Diskpart to exit with an error code.
Type exit to exit Diskpart.exe.

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