Physical Device Recognition In Linux, everything is a file. When you connect a new disk to the system, the Linux kernel detects this device through the udev event mechanism: # View the disk devices recognized by the system $ lsblk $ ls -l /dev/sd* Disk devices are typically represented by paths such as /dev/sda, /dev/sdb, … Read more
File System 1. Experiment Objectives The file system (p583, programming problem) checks the relationship between files and inode on UNIX or Linux systems. On these systems, files are represented by inodes. In other words, an inode is a file (and vice versa). You can complete this exercise on the Linux virtual machine provided in this … Read more
01 What is a BootLoader? It is a boot program, which is the first program to execute after hardware reset. Its main job is to initialize the environment for the operating system to run, such as memory, timers, buffers, etc. Once this is done, it loads the operating system’s code into memory, and then the … Read more
Recently, I have been learning about system porting. During the process of learning and debugging, I encountered and solved many problems, but I always felt a vague sense of confusion about our development results. Upon reflection, the main reason is that we do not have a profound understanding of our development environment. Sometimes, a few … Read more
Click on the “Embedded Application Research Institute” above, and select “Top/Star Official Account“ Useful Resources Delivered First Hand! Source | CSDN-Stop at Perfection 656 Compiled & Formatted | Embedded Application Research Institute 1. Root File System Layout The layout of the embedded Linux root file system is recommended to follow the FHS standard. In fact, … Read more
Many users often encounter the issue of their phone displaying the message “SD card is damaged, you may need to format it” after prolonged use, rendering the SD card unusable. Recently, a friend faced this issue with their phone, and after researching the cause and finding some information online, they managed to resolve the damaged … Read more
Summary: Many friends may have encountered the issue of being unable to format their phone’s memory card, but due to a lack of knowledge about memory cards, they mistakenly believe that the memory card is damaged and discard it. This is quite unwise, as memory cards, while not very expensive, can still be saved if … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇Join our technical exchange QQ group with the note 【Official Account】 for faster access Components of the Disk Our disk is the only mechanical device in our computer (some older computers), and it is also a peripheral. Our computers are called electronic computers, which … Read more
The Linux system generally has four main parts: Kernel, shell, file system, and applications. The kernel, shell, and file system together form the basic operating system structure, allowing users to run programs, manage files, and use the system. A part of the hierarchy is shown in Figure 1-1. 1. Linux Kernel The kernel is the … Read more
Click the blue text above to follow us 1. Basics of the Linux File System 1. Characteristics of the Linux File System The Linux file system adopts a tree structure, starting from the root directory root (/). The Linux virtual file system allows many different types of file systems to coexist and supports operations across … Read more