Disk Structure & Layout
Exploring how physical storage is organized through CHS addressing, LBA, disk geometry, and partition schemes like MBR and GPT.
Posts tagged with #computer-science
DMA (Direct Memory Access)
Learn how DMA bypasses the CPU for device-memory transfers, DMA buffers, scatter-gather I/O, and IOMMU security.
File Allocation Methods
Understanding how file systems allocate disk space through contiguous, linked, and indexed allocation strategies, and how modern file systems like FAT, ext2/3/4, and NTFS implement these methods.
File System Abstraction
Understanding how operating systems organize and manage files through abstraction layers, from physical storage to logical file operations.
How Computers Work
Understanding the fundamental hardware architecture of computers — CPU, memory, I/O devices, and the bus architecture that connects them.
Instruction Set Architecture: The Bridge Between Hardware and Software
Explore RISC vs CISC, x86 vs ARM, opcodes, operands, and instruction formats that define how CPUs understand your code.
Interrupts & Polling
Hardware interrupts, IRQ handling, and interrupt bottom halves (tasklets, workqueues) for robust I/O processing.
I/O Scheduling Algorithms
Master FCFS, SSTF, SCAN, C-SCAN, and elevator algorithms for disk arm scheduling in modern operating systems.
Journaling & Crash Recovery
How file systems use write-ahead logging and journal checksums to ensure consistency and enable recovery from system crashes without data loss.
Kernel Architecture
Explore monolithic, microkernel, and hybrid kernel design trade-offs and understand why your operating system's architecture matters for performance, security, and reliability.