BIOS Safe Mode Update with Secure Authentication
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Solution Overview
Problem
As electronic devices become increasingly complex with more hardware and pre-boot features, the Basic Input/Output System (BIOS) may fail to boot correctly due to conflicts, making it difficult to diagnose and recover the device, especially when BIOS data is faulty or corrupted.
Innovation Solution
The implementation of a BIOS safe mode that loads the operating system in a restricted environment using default factory-installed BIOS data, skipping hardware initialization and enabling diagnostic and repair tools by triggering a modified BIOS state through authentication procedures or hot key sequences, allowing for secure access to default BIOS data stored in a protected memory region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hardware initialization and pre-boot features are added to increase device functionality, then device versatility is improved, but BIOS reliability deteriorates due to increased conflicts and boot failures
Solution Approach 1:
The patent segments the BIOS system into two distinct modes: full functionality mode with complete hardware initialization and pre-boot features, and safe mode with restricted functionality and skipped hardware initialization. This segmentation allows the system to maintain high versatility when needed while providing a reliable fallback option when boot conflicts occur, directly resolving the contradiction between device functionality and BIOS boot reliability
2Ease of repair
If a modified BIOS state is implemented to provide safe mode, then ease of repair is improved, but device complexity increases due to additional authentication procedures and protected memory regions
Solution Approach 1:
The patent implements preliminary action by pre-establishing protected memory regions containing default BIOS data and pre-configuring authentication procedures before any boot issues occur. The safe mode trigger mechanism and restricted environment are prepared in advance, allowing rapid transition to repair mode when needed. This preliminary preparation simplifies the repair process while the added complexity is confined to pre-configured security infrastructure rather than operational complexity
Data Source
AI summary
Examples of electronic devices are described herein. In some examples, an electronic device includes a memory and a controller. In some examples, the controller is to enable a basic input/output system (BIOS) safe mode in response to an authentication procedure. In some examples, the controller is to provide access to back-up variable service region in the memory storing default BIOS data. In some examples, the controller is to start a modified BIOS based on the default BIOS data in response to enablement of the BIOS safe mode.