In SlipStream image module one can define an extra disk to be attached to the provisioned instance. In most of the cases, the attached extra disk (as block device) is neither partitioned nor contains a filesystem on it. If your image requests an extra disk to be attached, please include one of the following snippets into your Execute target.
Two options are possible:
1. partition device, create and mount filesystem
echo "n p 1 w " | fdisk /dev/sdc /sbin/mkfs -t ext3 /dev/sdc1 mkdir -p /mnt/extradisk mount /dev/sdc1 /mnt/extradisk
2. create filesystem on the entire device and mount
/sbin/mkfs -F -t ext3 /dev/sdc mkdir -p /mnt/extradisk mount /dev/sdc /mnt/extradisk
Please use the respective block device name (/dev/XYZ), filesystem type (extX) and mount point according to your case.