Legacy unison onboadd cem disk type and format.

I'm curently running light manager 1.3.  It's been quite some time since we needed to change some button stations and did not have (could not find) back up disk.  I bought several type 2 pcmcia flash disks loaded them into rack 1s cem and went through the disk prepare in the unison menu. It returns the statement wrong disk type.  Thanks in advance for your assistance on an old but very reliable system. Terry