Iomega Hard Drive does not mount on the Mac OS X desktop

I have: iomega UltraMax (1HD), FireWire, Mac OS X 10.5.6

It works properly till today...

I got an error during burnig DVD data from iomega HD... now I can't see my external HD....

I checked FireWire ports (Applications > Utilities > Open System Profiler Fiewire section) ... it looks work properly:


FireWire Bus:
Maximum Speed: Up to 400 Mb/sec
HDD:
Manufacturer: Iomega
Model: 0x0
GUID: 0x303C02E0140F13
Maximum Speed: Up to 800 Mb/sec
Connection Speed: Up to 400 Mb/sec
Sub-units:
HDD Unit:
Unit Software Version: 0x10483
Unit Spec ID: 0x609E
Firmware Revision: 0x42
Product Revision Level:
Sub-units:
HDD SBP-LUN:
Capacity: 931.51 GB
Removable Media: Yes
BSD Name: disk1
Mac OS 9 Drivers: No
Partition Map Type: APM (Apple Partition Map)
S.M.A.R.T. status: Not Supported
Volumes:
EXTERNAL HD:
Capacity: 931.39 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk1s3
Mount Point


So why I can't see my HD on desctop??!!!!
May be I need to do remount? or something!?

Please, Help to save my data!
Thanks guys!