I think enter show flash and look for the Cisco SDM file set: es.tar (for Cisco SDM Express), sdm.tar (for Cisco SDM), ips.tar (for IPS), wlanui.tar (for Cisco WLAN Application), home.tar, home.shtml, common.tar, and sdmconfig-xyz.cfg.
For more information on sdm please click following URL:
http://www.cisco.com/en/US/products/sw/secursw/ps5318/