Owner's Manual

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This method is preferable to the LUN alignment offset method for LUNs that will
have a snapshot, clone, or MirrorView image made of them. It is also preferred for
SAN Copy sources and targets.
Procedure: Using the fdisk Utility to Adjust a Disk Partition
Use the following procedure to use the fdisk utility to adjust a disk partition.
1 At the command prompt, type the following:
fdisk <PartitionName>
where <PartitionName> is the name of the partition that you are
adjusting. For example, if the partition name is
/dev/emcpowera, you would
type:
fdisk /dev/emcpowera
The system displays the following message:
The number of cylinders for this disk is set to 8782.
There is nothing wrong with that, but this is larger
than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old
versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)
2
At the command prompt, type the following fdisk utility argument:
x
3
At the command prompt, type the following fdisk utility argument:
b
4
When prompted for the partition number, type the partition number at the
command prompt. For example:
1