Day2磁盘分区详解：硬盘结构、MBR与GPT分区、分区工具fdisk使用总结

Day 2 focused on disk partitioning and detailed notes were documented on the process. The structure of a disk consists of tracks, sectors, heads, and cylinders. Each sector contains 512 bytes, with 63 sectors per track and 255 logical heads per cylinder. A cylinder's size is calculated as 8MB. The capacity of a hard drive or partition is determined by the size of the cylinder multiplied by the number of cylinders. There are two main disk partitioning schemes discussed in Day 2: MBR (Master Boot Record) partition and GPT (GUID Partition Table) partition. MBR partition uses the first sector as the MBR sector, which stores the boot program and partition table. It allows for 4 primary partitions (3 primary and 1 extended), with a maximum disk capacity of 2.2TB. On the other hand, GPT partition supports a maximum of 18EB disk capacity, making it more suitable for larger storage requirements. The partitioning tools covered in the session included fdisk, which supports only MSDOS partition layout and interactive partitioning. It is important to understand the differences between MBR and GPT partitions, as well as the limitations and capabilities of each partitioning scheme. Overall, Day 2 provided a comprehensive overview of disk partitioning concepts and practices. Participants learned about the different components of a disk, the structure of sectors and cylinders, and the partitioning schemes available for organizing disk storage. By using partitioning tools like fdisk, users can effectively manage their disk partitions based on their needs and system requirements.