[OS:N:] Adding a partition

["linuxls02" <linuxls02 peaksystemperformance com>]

Good morning, I am trying to add a partition to my Linux system.  I am trying to create a partition on a drive that already has some smaller partitions on it.  I was able to create the partition, but when I try to mount it on /temp I get that /dev/sda3 is not a valid block device.

Any help would be greatly appreciated

Thank you

Richard Tracy