[EMAIL PROTECTED] wrote: > > I gotcha. Roger that. I swapped the subject line to be more reflective of the discussion. Hope that's ok.
> My problem is I'm always wanting to do updates remotely > and wouldn't want users to have to flip a switch or God forbid reboot. Flipping a switch shouldn't be harder than flipping the write protect tab on a floppy. The problem is that putting the switch remotely onto the case, like wiring the turbo switch on an AT computer to handle the write protect, would create noise problems. That's one of the solutions being investigated. We've had a grand total of one EE comment on this offline, who proposed a solution. Jeff Newmiller also suggested a case mounted switch is not as desireable one on the ADM circuit board, for the same reasons. The problem is getting acess to an internal switch. Opening the case is a small hassle, especially for "users" and frequent updates. I'm a little surprised to hear you modify your config remotely that often, but that's just because I don't know your application, not because it's strange to do so. I don't think rebooting is required in this situation. > But a compact flash can be pulled after booting to ramdisk without > harm. That's pretty write protected. Problem is to get access to it > again you'll have to power down. Ok. A case mounted socket for a Flash would be similar to how a floppy is case mounted. But if you have to power down.... I thought PC-Cards could be hot swapped. I haven't messed with them in Linux yet, though. I thought the same was true for CF chips. Is this not incorrect? > I would be more interested in a heavily software protected mount, > dd, etc. If these commands were 400 and could only be accessed > via a very secure sudo like thingy. I mean even root could not get to > then without getiing past security. Maybe that's impossible ??? Anything software is not the holy grail because it can be circumvented with time and skill. Or so goes the argument. > Oh yeah, if you want to solder, break into your IDE cable and run the > write enable thru a switch (don't ask me). If you're clever you might > even not bring the drive down. That would be cool. You can search google going back a long way and read up on the whole history of IDE and how write protect is not in the specification. Attempts to modify the IDE cable and it's signals is not a possible solution from what I've read and my amateur analysis. I don't quite understand what you're suggestion would be from that one paragraph. If you're referring to using the IOW and IOR strobes, that's what I'm claiming isn't possible. IDE write protect is a new concept that exists only because CF and PC-Card manufacturer have built that into their controllers that exists on their circuit boards. Regards, Matthew _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user
