Zip100 disk 'kiss of death' - Error 20??

[PhatAgnus]

Gang: I've had a Zip100 disk cough up a kiss of death recently, and I've made a few attempts to resurrect it with DiskSalv, Disk Mon Tools, etc. Both salvage programs slap me in the face with an "Error 20" code. Disk Mon Tools doesn't recognize there being a file system on the disk at all. I even tried a PC based program called 'tip', which reported back a ton of 'hard errors'. Does anyone know what this 'error 20' code is all about & how I can work around it to at least salvage data off this disk? I've gone so far as to swap drives, and even disk cases to remedy this problem-nothing has worked thus far. Any insight is GREATLY appreciated. Thanks in advance, folks!!

[PhatAgnus]

Well, gang. Thanks for your support (especially Wayne's condolences). Was hoping maybe there was a way to trick the miggy into thinking the disk was a viable one. I have to say though that this was the first disk to go south on me (an Iomega brand-Fuji's haven't failed me ever), and this is my 2nd Zip drive in 6 years. So, my luck's been pretty good with them up till now. CDRs are a pain cause you have to close them in order to read them, no? This Zip disk had about 43 Megs free . It did get a lot of miles though, cause it remained in the drive for about 1 1/2 years of power ups/reboots. I'll hold it aside for that 'magic day' when it resurrects itself. Till then Thnaks again, Guys!
Miggy On...