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2025-04-04 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Servers >
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What is the Linux disk and file system management? in view of this problem, this article introduces the corresponding analysis and solutions in detail, hoping to help more partners who want to solve this problem to find a more simple and easy way.
Basic concept of disk
Disk partition MBR GPT
All formatted partitions have a lost+found directory
Basic concept of disk
Cylinder cylinder
Sector sector
Head head
All linux devices are abstracted into a file and saved under / dev
The general name is hda,sda hdb,sdb
The name of IDE device is hda
The name of sata,scsi,sas,usb and other devices is sd [Amurz]
Different partitions are represented by: device name + partition number, such as sda1 and sda2
The mainstream partition mechanisms are MBR and GPT.
Eg.
Cd / dev/
Ls / dev/sda (+ TAB built)
Or ls / dev/sda*
MBR master boot record tradition (PC devices using BIOS)
Hard disk must not exceed 2T
The header 512KB is occupied by MBR.
Bootstrap code area446
Partition table (for primary partitions)
Partition entry # 116
Partition entry # 216
Partition entry # 316
Partition entry # 416
Boot signature
55h3
AAh3
Total512
Primary partition
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