Hello Vincenzo,
On 13.10.2017 08:37, ingegneriaforense@alice.it wrote:
please, has some of you ripped out the BIOS chip from the motherboard when the pc is power on ? Has someone of you done this experiment ? Could be damages to the motherboard ?
Many times. It always worked if the chip was in a socket. I have not tried desoldering a chip in a running machine. Modern Intel systems may cause problems if the Management Engine tries to access the flash chip while it is removed, but IO'm not an expert on that.
Or maybe Coreboot should be programmed to switch electrically off the chip before tear out it from its case ?
You can't switch off the power for the flash chip because there is no switch in the hardware.
I pose this question because, if really the Bios chip is only necessary for the boot process of a machine, has not sense that it is on board during the usual activity of the O.S.
So, is it possible tear out it from its case after the boot process, when the pc is working and the O.S. has taken into account the whole control of the pc ?
I had some older PCs work fine without a flash chip for more than 4 weeks. Obviously, they needed the flash chip for booting, but after that I had removed it. For modern systems, it depends on various components and where their firmware and/or configuration data is stored. A generic answer is not really possible anymore.
Tips are welcome. Thanks very much in advance !
I hope to hear you soon.
Best Regards.
Vincenzo.
Regards, Carl-Daniel