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New HDD, has corrupted Data - AGAIN
J. P. Gilliver (John) wrote:
No, as the article explains, if you only have one drive, and it was connected to the middle connector, you'd have an unterminated stub of cable, which isn't good electrically (reflections and so on). Apparently for the 40 as opposed to 80 cables that _was_ the case, as they just left out line 28 to the second connector (i. e. master was on the middle connector). I like to draw pictures for people. For a single IDE drive, it *always* goes on the end, like this. Mobo X --------------+--------+ | | Master Cable_Select (if 80 wire, CS is allowed) When you add a second drive, it can be like this. Or, you can run CS on both drives, if you are using an 80 wire cable (with that twist in it). I didn't want to junk up the diagram, by adding CS to the table for both drives. Mobo X --------------+--------+ | | Slave Master Master with Slave (some brands have a distinction on the jumpers) Do *not* do this, as the end of the cable constitutes a stub and causes excess reflections and corrupted data. Mobo X --------------+--------+ | | Oopsy ULooz Even in the best of circumstances, the signals on that cable look horrible. The signals look more horrible in that last case. One of the things that SATA does, is banish those bad design ideas... to the pit. With point to point SATA, there are no more simulation nightmares for engineers to look at. Someone (of course) can still make a SATA cable out-of-spec, but the field reports seem to be pretty good. Almost as if most of the rolls of raw cables come from one cable plant, and that helps keep the process "honest". You should not bend a SATA cable until it kinks, as that causes unpredictable results to your data. You could get away with it, or not. Don't crush the excess SATA cable and tightly wrap duct tape around it. Bad. If you have too much SATA cable, buy a shorter one from the store and try again. HTH, Paul |
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