/fatab Explanation:Mounted devices: You can use device files, labels, UUIDMount point: Location to mountFile System Type: EXT SeriesMount options: Default, multiple options are separated by commas.Dump frequency: Backup frequency, dump backup, you need to write the plan with dump first.0: Never Back up1: Daily backup, 1 days a standby2: Backup every other day. 2 Days of preparationSelf-Test order: Boot system
Linux Command details df check disk space usage of the file system, linuxdf
Command: dfCheck disk space usage of the file system
You can view the total capacity, usage, remaining space, and mount location of all mounted disks.
Syntax: # df [OPTION] [FILE]
FILE is an optional list of one or more path names. If this op
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 created, it can be specified by the system administrator, or the file system creator can automatically select a reasonable value based on the size of the hard disk
▲ETX2 File SystemTypically, the size of a sector is 512 bytes (byte=8 a bits)The main point of partitioning is to record the starting and ending cylinders for each partition.MBR (Master boot Recorder) provides a maximum of 4 partitions of memoryIn order to improve the reading efficiency of the head, the concept of logical block 1BLOCK=2^N sector is used.The block at the beginning of each file system is called the
drive is not empty, select the format check box.
Note: formatting the USB flash drive clears all data on the USB flash drive. First, make sure that you have backed up the data.
In step 4, select the storage space used to save "persistent" system data.
Click "Create" to continue.
If you click "Yes" on the last page, your configuration will be applied directly.
This is the last chance to stop installation. Make sure you have selected the correct USB d
System ConceptsThe file system defines what structure the data is stored in. each partition can be a different file system, and the partitioning of the file system is for the partition. Linux File system ext2 is mainly divided into three types of structure, Superblock,inode
u disk speed up the working principle
U-Disk accelerates assistance from SuperFetch (super Pre-read) to work. SuperFetch This technology is also introduced in Vista when the introduction of new technology. The system will be able to according to the user's use habits, automatic record of the regular operation of the o
Whenever you insert a U disk into the computer, the system will automatically ask you whether you need to enable the U-Disk system acceleration, even now the WIN8 system will have the same hint, but you understand the U Disk
Detailed Description:
Chinese cabbage Super U disk starter making tools, is a pure fool-type production of a key U disk system Super Omnipotent King, U Disk production success rate of almost 100%, tested hundreds of u
This article is from the "Pavel" blog, make sure to keep this source http://pavel86.blog.51cto.com/8349178/1688277Linux systems support a variety of file systems, the difference between file systems is that different file systems on the same disk partition storage file structure is different. For example, some local tyrants bought 500 flat housing: Some workaholic would be separated from 1 bedrooms, 1 living rooms, 1 kitchens and 5 workstations; Some
selected USB-FDD, and then press F6 the other to the first position, the same usb-hdd to the second place;
8, select Exit, and then press exit saving changes (or press F10 Select OK, the effect is the same).
9, in a short while start U kai; then we choose to run U warrior Win7 pe Lite version (super high compatibility).
10, after a while, we enter the PE system;
11, first of all
Disk Layout
To better understand the online resizing mechanism, we first need to understand the disk layout of the ext3 and ext4 file systems. For the implementation of this function, these two file systems have the same structure on the disk, and we will not introduce any content unrelated to the online resize function to simplify and highlight the key.
The ext3
In linux, the fdisk command is usually used to learn disk partitions. of course, for disks smaller than 2 TB, we basically use the fdisk command for partitioning. below we will briefly introduce the basic commands and scenario simulation common commands for fdisk operations on disks. fdisk-fdisk for linux system disk partitioning
The fdisk command is usually used
= 4096 (log = 2) Fragment size = 4096 (log = 2) 4480448 inodes, 8960245 Blocks 448012 blocks (5.00%) reserved for the Super User First data block = 0 274 block groups 32768 blocks per group, 32768 fragments per group 16352 inodes per group Superblock backups stored on blocks: 32768,983 04, 163840,229 376, 294912,819 200, 884736,160 5632, 2654208, 4096000,796 2624
Writing inode tables: Done Creating Journal (8192 blocks): Done Writing superblocks and
move toHthe order was successful.DReplaceH); successfully powered on;Win7The order of the live characters as described above, you may need to change, for exampleHdisk changes toD, why do we need this? When you need to disassemble and replace the drive, let's say you want to remove the slave disk, thenM2automatically becomesD, or you add another one from the plate with three districts,M2the drive letter may have changed ... In short, whenM2(that is, t
file systems, the block size can be different. The typical block size is 1024 bytes or 4096 bytes. This size is determined when the ext2 file system is created. It can be specified by the system administrator or by the file system.
Program A reasonable value is automatically selected based on the size of the hard disk
table, and each partition has its own boot sector. File System ConceptsThe file system defines what structure the data is stored in. each partition can be a different file system, and the partitioning of the file system is for the partition. Linux File system ext2 is mainly
. File Decency Properties View and adjustment tool:
E2label:e2label device [New-label]
View Volume Label: E2label/dev/device
Set Volume Label: E2label/dev/device "LABEL"
TUNE2FS: Displays the properties of the Ext series file system and adjusts its properties
Options:
-L: Displays information in the Super block
-L: Modify the volume label
-j: equivalent to mke2fs–t ext3
-M: Specify a perce
file system adjustable parameters-L: View the specified file system super block information; Super Block-L ' LABEL ': Modify volume label-M #: Fixed percentage of space reserved for administrators-j: Upgrade ext2 to Ext3-O: File System Properties enabled or disabled-O: Adju
related properties of disk devicesUsage: Blkid/dev/sda3UUID: A uniform global identifierType: File system typesLabel: The volume label of the partitionE2label: Used to view or define volume labelsE2label device File View Volume labelE2label device File volume label set volume labelTUNE2FS: Adjust file system related properties (created file
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