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himdlinux [2009/04/10 17:54] stephenhimdlinux [2009/04/11 02:09] stephen
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 I think these two observations (the write protect and the attempt to format during playback of write protected disk) are probably related. I would be willing to undertake some experiments if anyone here thinks that would advance the understanding a little more. Clearly an overwrite head that is completely missing is more "reliable" than a machine with an intermittent connection via a "dodgy" ribbon cable? I think these two observations (the write protect and the attempt to format during playback of write protected disk) are probably related. I would be willing to undertake some experiments if anyone here thinks that would advance the understanding a little more. Clearly an overwrite head that is completely missing is more "reliable" than a machine with an intermittent connection via a "dodgy" ribbon cable?
 +
 +====== Number 2 ======
 +
 +Started with raintheory’s suggestion that one could change SonicStage to point to a URL of one’s own choosing
 +
 +http://forums.minidisc.org/index.php?showtopic=20002 
 +
 +Specifically tweak #3.
 +
 +I proceeded to point SS at a bunch of different places, in particular I tried D:\ (my hard disk). I worked hard to get the disk shown by Windows Explorer in Details view but no luck. 
 +
 +Somehow SS then became unstable (refused to boot with some sort of weird error that many people have reported 0x4e2E or something like that – I can find the details if it is important). So I tried to put it back, unfortunately something didn’t work right (I didn’t do the SI backup for SS), so without thinking about it too hard, I did a System Restore in Windows. I also followed the instructions to restore the OMGRIGHT folder.
 +
 +http://forums.minidisc.org/index.php?showtopic=21640
 +
 +Voila, now SonicStage works again, and all my music files were ok, EXCEPT the ones which had been generated between the time of the system (i.e. registry) backup and the time I crashed everything.
 +
 +My deduction – the keys that SS relies upon (more about this but really we don’t care so much) which are stored probably in the hidden folder OMGRIGHT, are probably updated with time information (as well as, since everyone knows this, information about the computer and perhaps the Pentium serial # or similar information such as used by Windows Product Activation). 
 +
 +I think what is happening here is that SS is updating the keys using something like Perfect Forward Secrecy, where each key is generated from the previous one. Of course you cannot go back in time with this scheme, so changing the system clock, for example simply doesn’t work.
 +
 +Just a glimmer of what might be going on.
 +
 +====== Number 3 ======
 +
 +This one is straight from a post on MDCF. If you need or want, I can paste the whole thing in here since it is my words, hopefully MDCF not claiming copyright to them. It relates to the way that tracks are protected from editing (on the portable HiMD unit). I strongly suspect they use the same technique to mark tracks from SS.
 +
 +http://forums.minidisc.org/index.php?showtopic=21684
 +
 +====== Number 4 ======
 +This one definitely tells something about how untitled tracks are treated, at least by Sonic Stage. It may not have relevance to what this site is trying to do, but what the heck....
 +
 +http://forums.minidisc.org/index.php?showtopic=22034
  
 Stephen in Vancouver Stephen in Vancouver
  
himdlinux.txt · Last modified: 2009/04/11 06:41 by wikiadmin

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