Drudging up a dead thread is sometimes boring, but here goes.. I too purchased (now three) one of these DOM's, but I did not see anything about being able to write protect it on the link to the nagasaki.com website, and even more when I contacted the sales people at BWI, they told me that there was no way to write protect these little things. Could you please provide me with the link that you have referenced as showing a write-protect feature, and also have you made any progress into this project.
Joey -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Steve Fink Sent: Tuesday, April 02, 2002 9:18 AM To: Matt Schalit; [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: RE: [Leaf-user] Flash Write Protect Matt, The tech doc on the Nagasaki DOM's that I have shows a set password command available. I'm in communication with the manufacturer, they do not currently have a utility available to the public to set this password, but where there's a will there's a way. I will check with some other Linuxheads I know and see what we can do... Essentially we just need to create a utility to set the password. Then if the password on the DOM is already set the utility authenticates a new session against the password on the DOM if it doesn't match it fails, if it does match the DOM is unlocked and can be written to. More to come, Steve -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Matt Schalit Sent: Monday, April 01, 2002 5:10 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: [Leaf-user] Flash Write Protect [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 _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user _______________________________________________ Leaf-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/leaf-user