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Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

2938.0. "Corrupt Games Disk Again" by LASHAM::EAST () Wed Sep 20 1989 12:47

    I have a corrupt copy of Shadowgate. Inserting the disk in any drive
    produces a requestor
    
    			*************************
                        Unable to validate disk
    			Shadowgate. Key 1020 is
    			already set.
                                 

                        Retry             Cancel
                        *************************
    
    Cancel produces a requestor telling you to use DiskDoctor.
                
    I know I can get a replacement from the manufacturer but half the
    fun is to try and fix it!!!
                  
    I have tried....[Gulp]...Diskdoctor "I should have known better".
    Not surprisingly No joy.
    I have tried DiskSalv V1.4 which reconstructed the disk but gives
    a GURU message Software Error when the new disk is booted. The 
    program is copyright protected, I think, but I dont know how!
    
    
    Q1 can anybody enlighten me on the meaning of the requestor "key
    1020 is already set?
    
    Q2 Is it salvageable, or is it a lost cause?
    
    	Any help would be greatly appreciated.
    
     Manufacturers could do much to prevent this situation by using
    copyright protection via a uniqely identifiable machine ID, bonded
    to the disk on initial installation. This would enable backup copies
    to be made for that machine but disable it running on any other
    machine.
    
    			Regards,

T.R	Title	User	Personal Name	Date	Lines
2938.1	block 1020 appears in two files	TLE::RMEYERS	Randy Meyers	`Wed Sep 20 1989 21:12`	10
	Re: .0 > Q1 can anybody enlighten me on the meaning of the requestor "key > 1020 is already set? It means that when the disk validator scanned the disk to rebuild the allocated block bitmap, it noticed that block 1020 was allocated to two different files. Search this conference for "validator" for more details.
2938.2		NZOV01::MCKENZIE	All the while,The Dragon Slept	`Wed Sep 20 1989 22:11`	1
	I have seen this problem with "Pinball wizard" also...
2938.3	Still hoping to recover	LASHAM::EAST		`Fri Sep 22 1989 05:57`	8
	Randy, Thanks for the explanation. I will search "validator" in the conference. A quick question before I do. Is there a way of finding out which are the offending files? Thanks again David
2938.4	Nope, you don't know which files are screwed	TLE::RMEYERS	Randy Meyers	`Fri Sep 22 1989 18:59`	12
	Re: .3 >Is there a way of finding out which are the offending files? Unfortunately not. The disk validator has already lost the information about the file file if found the block in. The validator probably knows the name of the second file containing the block, but refuses to tell you. I seem to believe that DiskSalv may tell you which files contain already allocated blocks as it recovers them. But, my memory could be bad here...