super famicom disk system

A rough description For ext2 file systems, hard disk partitions are first divided into blocks, and each block on a ext2 file system is the same size, but for different ext2 file systems, the block size can vary. The typical block size is 1024 bytes or 4096 bytes. This size is determined when the Ext2 file system is crea

1.Linux Disk ManagementHard disk:Mechanical hard-diskSsdsMechanical type:TrackSector:512bytesCylinder: The basic unit of the partition;Mbr:master Boot Record512bytes446:bootloader64:filesystem Allocation table16: Identify a partition2:55aaDisk interface type:IDE (ATA): 133MB/S,/DEV/HDscsi:640mb/ssata:6gbpssas:6gbpsusb:480mb/sIdentify the hard drive device:/DEV/SDMark a different hard drive device:/dev/sd[a-z]Mark different partitions on the same devic

device file;· Exec: After the file system can be mounted, You can execute the execution files in it;· Noexec: files cannot be executed;· Auto: The file system is automatically mounted after the computer is started;· Nouser: allows only super user (that is, root) to mount the file system;· Async: set to not synchronize

to mount, for example: Vfat, Ext2, Ext3, iso9660 (CD-ROM), usually this part does not need to add kernel can judge by themselves (2)-O after adding some parameters: · SUID: Allow the mounted file system to use SUID, Sgid special permissions, dev: Allow the mounted file system to establish device files, for example:/dev/hda6 is the device file; Hda6: After allowing the file

is similar to raid-0. 5. At least 3 disks, disk utilization N-1 Blocks Insufficient: The data write efficiency does not necessarily increase, because the data to be written to RAID 5 must pass the calculated check code (parity ). Therefore, the write performance is significantly related to the system hardware. Especially when a software disk array is used, the c

File System Properties View and adjustment tools:e2label Command : Set the file system volume label to avoid formatting changes to the volume labelE2label device name [Label]#查看分区卷标 [[email protected] ~]# e2label/dev/sdb1mytest# Modify the partition volume label [[email protected] ~]# e2label/dev/sdb1 ' labelnew ' [email Protected] ~]# e2label/dev/sdb1labelnewtune2fs Command : Displays the properties of the

Summary of important Linux Knowledge mdash; disk and file system management EXT2 file system: file system features: format ): the file attributes/permissions set for each operating system are different. to store the data required for these files, you need to format the part

Linux is the most traditional disk file system is EXT2 (of course, has now been upgraded to EXT4), this chapter mainly introduces the Linux disk File system, and this article focuses on the Linux EXT2 file system. we all know that when a

, from low to high. Each partition can create a file system independently. Linux treats all file systems from the perspective of a set of common objects. These objects are superblocks, inode, dentry, and files. The super block describes and maintains the state of the file system on the root of each file system. Each ob

parameter to specify the file system type, because almost all file systems have super blocks, during mounting, Linux automatically analyzes the super block and uses the Linux driver to test the mounting. If the test succeeds, the system immediately uses this type of file system