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By johnnow ·
A while back I thought I saw some software that you could set it up with your CMOS settings. Effectively going around your CMOS battery. Does anyone know what I'm talking about?

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Software Soution

by McKayTech In reply to Software Soution

I've seen utility programs that will write your CMOS settings to a disk file for backup purposes so you can restore them when your CMOS battery dies.

That may have been useful when few CMOS settings were auto-detected but the problem has alwaysbeen that once you store the file on a drive, you still have to be able to access the drive to restore it. And when your CMOS dumps from a dead battery, drive parameters are usually one of the things lost so you may not be able to boot up to the point where you can re-load the file unless you go into the CMOS and manually set up the drives again. Further, at the very least, the date and time will be wrong if they are restored from the backup.

The whole point of CMOS and battery-backed memory was to replace physical jumpers for parameters that are required prior to boot. Getting around them by storing those parameters on a medium that requires a successful boot to access defeats the whole purpose. It's kind of a solution in search of a problem.

paul

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Software Soution

by johnnow In reply to Software Soution
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by lucard In reply to Software Soution

If that software did a "CMOS dump" (which means storing CMOS data in a file) you won't be able to restore the CMOS setings because you would have to boot first for accesing the file that containes the CMOS data and run a minimal OS to restore it. Some motherboard producers have found a way to resolve this problem in much more effective way. For example, the AOpen AX6BC motherboard has two new features in the SETUP screen: "Save EEPROM defaults" which loades your current CMOS setings in special chip on-board, and "Load EEPROM defaults" which loads the setings saved by the previous command in case of battery failure or boot failure because of overclocking. Note that this kind of motherboard, if it finds an empty CMOS, starts the computer with the minimal configuration supported (CPU speed and memory latency timers) so you can run the two commands.

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by johnnow In reply to Software Soution
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by bborcher In reply to Software Soution

Following up on what Lucard said,

Abit Motherboards also have this feature, on my old 366 celeron , i wanted to see just howgood it would run on 200 mhz bus.. haha
well, it didnt really like it, so it reset my bios, restarted my computer, and here came loaded up a 'celeron 100' ... so i had to go in the bios and also 'load back' my saved eeprom settings (That eeprom rocks ), but anyways... yes, newer motherboards are coming up with better ways to do this stuff......

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by johnnow In reply to Software Soution
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