17 Bit PD Collection disk failures

andyhants · 27 September 2023, 20:00

Hi there

I am experiencing problems when trying to extract ADF images from the 17 Bit PD Disk Collection on CD & getting a lot of 'Not a DOS Disk' errors after extracting. I'm currently only trying on the 1st CD but getting around a 30% failure rate - which seems way too high.

I've tried multiple ISO images & also tried using an original CD (I got them all before the days of FTP servers) - all under WinUAE & get the same failure for specfic disk images. Have also tried a different DMS extract utlity aside from the 17 Bit one on the CD.

I've attached a couple of example dms files for disks 128 & 131 that I get the 'Not a DOS Disk' failure on consistently.

I suppose my questions are - is this a known issue with the 17 Bit Collections - so fundamentally dodgy original DMS files - or is it another issue? Would appreciate anyone having a go at UnDMS'ing the attached files to see if the ADFs will actually run.

As ever - thanks for any help offered.

Edit - apologies looks like EAB won't allow me to attach DMS files

derSammler · 27 September 2023, 20:49

Did you try booting from the disks? Maybe they *are* NDOS and nothing is wrong?

27 September 2023, 20:00	#1
andyhants Registered User Join Date: Nov 2013 Location: Hampshire England Posts: 185	17 Bit PD Collection disk failures Hi there I am experiencing problems when trying to extract ADF images from the 17 Bit PD Disk Collection on CD & getting a lot of 'Not a DOS Disk' errors after extracting. I'm currently only trying on the 1st CD but getting around a 30% failure rate - which seems way too high. I've tried multiple ISO images & also tried using an original CD (I got them all before the days of FTP servers) - all under WinUAE & get the same failure for specfic disk images. Have also tried a different DMS extract utlity aside from the 17 Bit one on the CD. I've attached a couple of example dms files for disks 128 & 131 that I get the 'Not a DOS Disk' failure on consistently. I suppose my questions are - is this a known issue with the 17 Bit Collections - so fundamentally dodgy original DMS files - or is it another issue? Would appreciate anyone having a go at UnDMS'ing the attached files to see if the ADFs will actually run. As ever - thanks for any help offered. Edit - apologies looks like EAB won't allow me to attach DMS files

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27 September 2023, 20:49	#2
derSammler Senior Member Join Date: Jun 2001 Location: Germany Posts: 1,657	Did you try booting from the disks? Maybe they are NDOS and nothing is wrong?

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