You bet your buns, chum !!! Slot-loading iMacs, PowerBooks, Cubes and G4 s May be at risk.
Look it up on the internet before installing Jaguar, and read the Firmware Update documents on the Jaguar CD. I don't know if this is an ssue with OSX but it sure is with slot-loading iMacs and Jaguar. And you don't need to try to install Jaguar. For some iMac users simply starting up off the Jaguar CD can play havok with the iMac video. Either the screen goes distorted, as in concave on the right, convex on the left....or vice versa...or the screen goes BLACK and there is NO video, or the screen gets hopelessly fuzzy, or the screen goes really really dark but usable. A check in the Monitors control panel probably shows that video (usually often at 65 or 75 Mhz) is now running 640 X 480 at 117 MHz !!!!!!! Blow out. In order to get the firmware updated you MUST start up the slot-loading iMac from an internal HD with OS9.1 on it, pop in the Jaguar CD and launch the Firmware 4.1.9 utility from the Utilities foder off the CD and then restart while holding in the Programmers Button until you hear a loud tone. The instructions are on the Jaguar Install CD. I did this successfully on my daughters iMac and then got a call from an iMac user who had blown out his video to a black screen. He called to ask for a battery, thinking it had died, but mentioned the Jaguar thing as well. The new battery didn't help. He tried the Firmware Update after messing up the video (dark screen). We futzed around with it and managed to get a lopsided dim desktop with a message on it that Firmware Update had failed. We tried again. Yes...I tried OS 9.2....NFG And I tried launching the utility from a downloaded copy of the same Firmware Update....NFG And I tried it with TWO DIMMs in the computer.....NFG And I tried to reset the PRAM, pull the battery, drain the capactors (if there are any) by letting it sit unplugged overnight.... but it took more than a few hours of trying over and over with variations on startup techniques, various sticks of RAM in slots and hardware rotation to stumble upon a procedure that allowed the progress bar to suddenly appear on the screen and a message indicating that the firmware was updated. I'm still not really sure what we did to get it to work. Once it did work the iMac was as good as new !!! Maybe it won't happen to you.... BUT I recall that Apple OS installers USED to have a script that would put a warning on your screen if you tried to install a system incompatible with the computer you were trying to put it onto. Jaguar really aught to check ROM version before it messes up a computer it won't run on. M Tekno Liber wrote:Does installing Mac OS X on an iMac without the FirmWare > update screw up the screen (screen control that is) ???? > > Laurence > -- Never sell anything on eBay or the internet for more than you are asking for it. There has been a sudden recent rash of high-ticket items bought all over the US and Canada and with literally thousands of really high-quality counterfeit cashiers cheques drawn on American banks but sent from NIGERIA with an explanation that the cheque is to be deposited and the excess money sent to a third party as soon as the cheque clears. The full face value of the bogus cheque actually DOES appear in the depositor's account within a week (for most US bank accounts) but about a month later, when the bogus cheque finally arrives back from the bank it is drawn on, the full amount of the counterfeit cheque becomes the problem of the depositor. By that time the excess funds have been sent to West Africa and are irretrievably lost. Bank fraud is the third largest source of hard currency for NIGERIA and North American individuals are their prey of choice. -- The iMac List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | - Epson Stylus Color 580 Printers - new at $69 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> iMac List info: <http://lowendmac.com/imac/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/imac-list%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
