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ChimyFolkButter
Joined: 15 Oct 2005 Posts: 50
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Posted: Sat Feb 10, 2007 3:34 am Post subject: Copy Protection on FDS Doki Doki |
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Wow, I finally saw the copy protection on an FDS game. I was rewriting Doki Doki panic using the FDSLoadr/CopyMaster/Game Doctor Method. It wrote the disk A and B sides no problem.
I loaded the side A succesfully. However when Load B started to load, I got the error:
Sorry
Please use an official Disk writer (something like that).
FDSLoadr didn't load up the hidden files.
How did I get around this? I luckily had a good copy of Doki and I used Disk Keeper v1.3 to copy it. Disk Keeper v1.3 easily gets around the hidden file trick.
As an experiment, I tried to write the disks using FDSLoadr/Disk Keeper. Well, Disk Keeper kept erroring out with a Error 25. Disk Keeper was probably looking to read the extra file but FDSLoadr didn't load it.
Madman, can you try writing Doki Doki using the MGD1/PC cable? I am wondering if that method gets around this problem.
-CFB |
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madman
Joined: 07 Jul 2006 Posts: 598
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Posted: Sat Feb 10, 2007 5:19 pm Post subject: |
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I'll try to do that this weekend hopefully. I do have a pirate Doki Doki so it is possible to copy it. I can also dump that and see if it's different than any of the dumps out there. |
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kyuusaku
Joined: 26 Jul 2003 Posts: 941 Location: .ma.us
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Posted: Sat Feb 10, 2007 10:19 pm Post subject: |
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This is the FDSLoadr "hidden file" issue, any sort of raw copy will do. |
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ChimyFolkButter
Joined: 15 Oct 2005 Posts: 50
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Posted: Sat Feb 10, 2007 11:56 pm Post subject: |
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kyuusaku,
Yes it is. I am just looking to see if the MGD1 can write the disk. If FDSLoadr fails then MGD1 could write an FDS file to the disk. If I didn't have a copy of DOKI and used a "raw" copy method, then I would have been screwed. |
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kyuusaku
Joined: 26 Jul 2003 Posts: 941 Location: .ma.us
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Posted: Mon Feb 12, 2007 2:24 am Post subject: |
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The MGD1 unfortunately works on a file level, if Doki relies on data outside of a file boundary, it won't be able to back it up. It could write it back by modifying a raw image, but that would damage the structure and defeat the purpose. |
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rbudrick
Joined: 26 Mar 2004 Posts: 373
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Posted: Mon Feb 12, 2007 2:29 am Post subject: |
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It's been a while since I read about or was told about the technical side of this "hidden files" copy protection scheme. Can someone give me a refresher on the technical side of how this works, and why and fds can read them and FDSLoadr can't?
Lol, DDP was the first fds disk I ever tried to dump, so I was confused when I saw this happen.
Is there a list of problem disks out there? It would be cool to make this a complete thread on the subject, if possible, since I don't think it's been mentioned much yet. I want to try to include this in my complete FDS copying/maintenance doc I'm writing.
So is Disk Keeper the only program that skirts around this? I wonder if FDS to FDS cables would work or any of the Disk Hackers (too bad II isn't dumped yet).
-Rob |
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kyuusaku
Joined: 26 Jul 2003 Posts: 941 Location: .ma.us
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Posted: Mon Feb 12, 2007 3:57 am Post subject: |
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The FDS doesn't know what a file is; games can use the BIOS to read from the disk which creates a level of abstraction around loading (which requires protocol), or they can manually read the disk with their own routines. Hidden files are just data not in a proper file.
FDSLoadr is only limited by it's software which must expect the protocol to be followed. |
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Arnold101
Joined: 20 Jan 2007 Posts: 28 Location: Italy
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Posted: Wed Oct 17, 2007 8:05 pm Post subject: |
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how you make famicom disk system floppy? there is an how-to? thanks |
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rbudrick
Joined: 26 Mar 2004 Posts: 373
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Posted: Thu Oct 18, 2007 6:43 pm Post subject: |
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Replied to your pm, arnold.
Referred to fdsloadr.
-Rob |
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Arnold101
Joined: 20 Jan 2007 Posts: 28 Location: Italy
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Posted: Thu Oct 18, 2007 8:33 pm Post subject: |
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thanks replied |
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