Boot method of a system whose system BIOS has been disabled
First Claim
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1. A boot method for a system;
- the boot method allows the system to be rebooted in the event that the system BIOS has been disabled by erroneous microcode input as the result of inadvertent miscoding or malicious intent;
the boot method comprises the following steps;
after activation, the system checks if it is necessary to update the microcode and notifies the keyboard BIOS of the needed update;
the keyboard BIOS waits for a first predetermined period after the update of the microcode commences, if an updated signal is not received, the keyboard BIOS sets a fail flag, shuts down the system and, after a second predetermined period, reboots the system.
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Abstract
A novel boot method for a system, whose system BIOS has been disabled by erroneous microcode input as the result of inadvertent miscoding or malicious intent. The keyboard BIOS of the system is utilized in the present invention. If the CPU of the computer crashes during a microcode update, the system notes the error (setting a number of flags) and restarts the computer. The restarted system will not perform the microcode update, but goes straight to the normal BIOS activation, avoiding the crash problem. To fix the problem, users need only request the correct microcode from CPU retailers to amend the errors in the BIOS.
16 Citations
7 Claims
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1. A boot method for a system;
- the boot method allows the system to be rebooted in the event that the system BIOS has been disabled by erroneous microcode input as the result of inadvertent miscoding or malicious intent;
the boot method comprises the following steps;
after activation, the system checks if it is necessary to update the microcode and notifies the keyboard BIOS of the needed update;
the keyboard BIOS waits for a first predetermined period after the update of the microcode commences, if an updated signal is not received, the keyboard BIOS sets a fail flag, shuts down the system and, after a second predetermined period, reboots the system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- the boot method allows the system to be rebooted in the event that the system BIOS has been disabled by erroneous microcode input as the result of inadvertent miscoding or malicious intent;
Specification