milry62 Posted November 23, 2016 Share Posted November 23, 2016 I am new to the vintage computing world, and I have finally gotten my IIc's disc drive to work. I often get the message "unable to load prodos." Is there a remedy to this situation? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Tempest Posted November 23, 2016 Share Posted November 23, 2016 Are you sure the disk image you're using is good? Quote Link to comment Share on other sites More sharing options...
Keatah Posted December 2, 2016 Share Posted December 2, 2016 It's the standard PRODOS data disk. Quote Link to comment Share on other sites More sharing options...
MarkO Posted December 8, 2016 Share Posted December 8, 2016 It sounds like the Disk is Damaged, or the ProDOS has been deleted.... Or the Drive can be Dirty.. Try a different disk.. MarkO Quote Link to comment Share on other sites More sharing options...
Keatah Posted December 8, 2016 Share Posted December 8, 2016 If this is what you're getting then you have a disk that simply does not have ProDOS on it. It was likely made that way so as to have more room. Because ProDOS takes up a fair amount of space as seen here. Quote Link to comment Share on other sites More sharing options...
Tempest Posted December 8, 2016 Share Posted December 8, 2016 If this is what you're getting then you have a disk that simply does not have ProDOS on it. Exactly. Not all disk images are bootable. Sometimes you need to load ProDos from a separate disk and then run the program. Quote Link to comment Share on other sites More sharing options...
Keatah Posted December 8, 2016 Share Posted December 8, 2016 Reminds me of all the tricks we used to do back in the day, eliminating dos and recovering space from track 0,1,2, deleting prodos, shortening the number of VTOC entries to the exact number of files on the disk, modding DOS with a 2-byte patch to add a 35th track conducting realtime decompression with a simple RLE routine to pack even more data in there, removing sector markings.. Great times! 2 Quote Link to comment Share on other sites More sharing options...
Tempest Posted December 9, 2016 Share Posted December 9, 2016 With the IIgs many games/programs need to actually be run from within GS/OS (the GUI the IIgs uses), they can't be booted. Quote Link to comment Share on other sites More sharing options...
Vivian Balam Posted July 30, 2020 Share Posted July 30, 2020 I have had an Apple IIGS for many years. Today, I put in the startup disk (5-1/2 in floppy) and got the message "unable to load prodos". I proceeded to put in another startup disk and it loaded and asked for the program disk. When I put that in and hit enter it said "the date must be 1983 or later, and in this format 3/20/83. At the bottom it said type today's date or press return: 3/20/84 - I pressed enter and at the top of the next screen was a bunch of number and letters that make no sence at all. ANY SUGGESTIONS? Really appreciate any help I can get. Vivian Quote Link to comment Share on other sites More sharing options...
MarkO Posted August 11, 2020 Share Posted August 11, 2020 On 7/30/2020 at 10:49 AM, Vivian Balam said: I have had an Apple IIGS for many years. Today, I put in the startup disk (5-1/2 in floppy) and got the message "unable to load prodos". I proceeded to put in another startup disk and it loaded and asked for the program disk. When I put that in and hit enter it said "the date must be 1983 or later, and in this format 3/20/83. At the bottom it said type today's date or press return: 3/20/84 - I pressed enter and at the top of the next screen was a bunch of number and letters that make no sence at all. ANY SUGGESTIONS? Really appreciate any help I can get. Vivian Could be looking at Bad RAM.. Can you run the Self Test?? MarkO Quote Link to comment Share on other sites More sharing options...
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