Linux Device Management Guide. The main goal of this guide is to provide detailed instructions regarding the Linux administration of embedded devices
Understand how Linux interacts with Hardware and Device Drivers.
Linux Pseudo File Systems: Free Guide
A pseudo file system does not exist on a physical hard disk,is created by the Kernel and only runs all in RAM while the system is running. LPIC1 Category – 101.1 Determine and configure hardware settings It uses the folders /proc and /sys to keep track of all processes and system hardware information. /proc folder […]
BIOS Interrupt Vector Table
BIOS Processor Instructions INT Address Type Function Description 00h 0000:0000h Processor Divide Error 01h 0000:0004h Processor Single Step 02h 0000:0008h Processor Non-maskable interrupt 03h 0000:000Ch Processor Breakpoint instruction 04h 0000:0010h Processor Overflow instruction 05h 0000:0014h BIOS Processor Print screen Bound range exceeded 06h 0000:0018h Processor Invalid opcode 07h 0000:001Ch Processor Coprocessor not available 08h 0000:0020h […]
Understand Linux Boot Process Free guide
The Linux boot process have different stages, here i will try to explain all of them in detail mapping all memory addresses used by each stage. Starting with POST tests definitions and explaining the BIOS instructions and configurations.