On Apr 13, 2007, at 6:15 AM, Derick Centeno wrote: > Remember that what Apple has done with open source is modify nearly > everything to it's taste. Apple's pdisk for example is probably not > able to see or read ext3 format which is the format used by YDL. > So the > above doesn't mean anything. Apple even entirely removed md5sum from > Darwin, the open source or BSD component of OS X which is standard > everywhere else (in every other Unix).
I am well aware that Apple mooches the best bits of BSD as they see fit for Darwin, much as they reworked System V to dovetail with System 7.0.1 in A/UX 3.x (still my favorite UNIX-variant). With regards to `pdisk`, I was relying on Mac OS X's inability to recognize the partition's format. That would have indicated the possibility of the DVD being FAT-32, ext2/3, ISO-9660, et al. Since `pdisk` did not return the expected `No valid block 1 on '/dev/ rdisk2'` error, but rather showed the disc to have an Apple partition map, my interests were piqued. As it turns out, YDL 4.1's Disc 1 has a similar partition map and uses HFS (standard). I am no expert in Open Firmware or bootloaders (no matter how hard I try to be), but this makes sense: the first disc has(had?) to be bootable on Old World Macs, but discs 2-4 are needed only when a rudimentary Linux is already running. As a result they are in ISO-9660 and thus lack an Apple partition map. Indeed, they could have been ext2/ext3. Had that been the case, I would have installed ext2fsx on Mac OS X and rummaged around the disc for clues. With regards to MD5, I disagree fully. I checked my stash of YDL 4.1 ISOs against Argonne's and the MD5s match. Perhaps Apple's `md5` utility has changed somewhere in the past, but I can say with certainty that since 10.2.8 on forward `md5` works "as expected". Please `man md5`. >> (3) Are the YDL 5 prints' undersides supposed to be blue? > Different persons will see different colors or none, depending on > their > eyesight and perhaps even their location. Although I referred to the > possibility of the DVDs being Blu-ray, I was really indicating that > this > particular observation is not a useful guide in determining anything. It "determines" the process by which the disc is printed. It was possible that I ordered too hastily and someone at TSS made a quick burn-n-ship instead of shipping a print - you never know. > Consider this, most persons can see upon reflecting the underside > of any > DVD or CD to light for a short period a range of brightly varying > colored light similar to a rainbow; people will obviously observe > different hues and describe them quite differently. Yes, and I abuse that "rainbow effect" to "see" the data on disc. I can't read it with my eyes, obviously, but at least I can detect the physical presence of the data. If no data were on disc, the light streaks would have been continuous and unbroken. - NeoAmsterdam _______________________________________________ yellowdog-general mailing list [EMAIL PROTECTED] http://lists.terrasoftsolutions.com/mailman/listinfo/yellowdog-general HINT: to Google archives, try '<keywords> site:terrasoftsolutions.com'
