One, computer assembly.
- Computer hardware is divided into input/output devices. The host includes a chassis, power supply, motherboard, cpu, memory, graphics card, sound card, network card, hard disk, optical drive and floppy drive, etc. Input/output devices include monitor, keyboard, mouse, speaker, camera, printer and scanner.
- Desktop machines can be divided into brand machines and assembled machines.
- BIOS and UEFI: BIOS is a program whose content is solidified on a ROM chip on the computer motherboard.
UEFI is essentially the earliest EFI launched by lntel. The UEFI interface is used to load information from the pre-boot operating environment to the local operating system.
Second, VMwore Workstation. - The virtual machine is divided into the traditional computer software architecture and the native architecture.
- A common software program for virtual machines is VMwore Workstation. VMwore vSphere. VirtualBox,. KVM. Virtual Server. Hyper-V. XenDesktop. XenServer etc.
- Switch to the virtual machine ctrl+G Switch to the host ctrl+Alt Display the virtual machine ctrl+alt+enter in full screen
3. Windows 10 deployment. - Microsoft Windows UNIX Linux (Red Hat / CentOS / MS-DOS) But OS MS-DOS
- Relevant requirements for installing Windows 10: System architecture X86 (32bit) X86-84 (64bit)
Cpu frequency 1GHz or higher
Memory capacity 1GB 2GB
Hard disk capacity 16GB 20GB
Display related support DirectX9 or higher version
Four, Windows 10 operating skills.
8.Cortana OneDrive cloud storage service
9.win+G Quick recording win+up, down, left and right window paste switch to virtual desktop ctrl+win+left and right
Win+p projection selection input method win+space connect remote display win+k
Narrator win +enter change the icon CTRL+mouse wheel to open ctrl+shift+left mouse button
magnifying glass win+plus sign
five as an administrator , Windows 10 backup and recovery.
10.Ghost is a free software, mainly used for hard disk backup. It can copy all the contents of the entire hard disk to another hard disk, or copy the contents of one partition to another partition, and it can also copy the entire hard disk or all of the partitions. The content is made into a compressed image file, or the entire contents of a partition or the entire hard disk can be recovered from the image file.
11.Partition—To Image Make all the contents of a partition into a .gho format image file and store it in another partition.
12. system.ini and win.ini are two configuration files that come with Windows.
Sixth, the Windows 10 registry.
13. The registry database is directly stored in binary. Open the registry win+r and enter regedit
14. Two more important subtrees HKEY-CURRENT-USER HKEY-LOCAL-MACHNE
15. Value data type String value Binary value DWORD value QWORD value Multi-string value Extensible string value
16. Unlock the registry editor Lock 1) Use the hardware driver installation information file to unlock
2) Use a third-party registry editing tool to unlock
7. Common troubleshooting of Windows 10.
17. Faults are divided into hardware faults, system faults, and software faults.
18. Troubleshooting ideas for common faults 1) First outside, then inside 2) First power supply, then parts 3) First general and then special 4) First simple and then complex
19. Fatalness of motherboard alarm The hardware failure stage
1) Alarm sound, 2 short. General error, reset the incorrect option in the BIOS.
2) Alarm sound, 1 long and 1 short. It means that there is an error in the memory or the motherboard, try replacing a memory stick.
3) Alarm sound, 1 long and 2 short. It means that there is an error in the display or graphics card, you can turn off the power, check whether the graphics card and the plug of the display are in good contact, or use the replacement method to determine whether the graphics card and the display are damaged.
4) Alarm sound, 1 long and 3 short. It means that the keyboard controller is wrong and the motherboard should be checked.
5) Alarm sound, repeated short sound. There is a problem with the motherboard power supply.
6) The alarm sounds, repeat for a long time. This means that the system has detected a problem with the memory module, and you should turn off the power to reinstall the memory module or update the memory module and try again. - "Keyboard error or no Keyboard present" This message indicates that there is a problem with the keyboard.
Eight, get to know the Linux operating system for the first time.
21. "IDE" interface device, expressed as "hdx" "SESI" interface device, expressed as "sdx" "x" is a, b, c...
22. In the Linux operating system, the file system type used by the root partition by default For EXT
23.ifconfig ens33 192.168.100.100 netmask 255.255.255.0,
add the IP address 192.168.100.100 to ens33, and the subnet mask is 24 bits.
Nine, Ubuntu operating system settings and basic operations.
24.vim /etc/sysconfig/network-scripts/ifcfg-ens33
View network card information - /boot: This directory is the directory where the system kernel is stored, and it is also the directory where the files needed when the system starts.
/bin:bin is the abbreviation of binary. This directory stores frequently used commands that all users can execute.
/dev: This directory saves interface device files.
/etc: This directory saves files related to system settings and management.
/home: Store the default working folder of all ordinary system users.
/root: This directory is the home directory of the administrator root of the Ubantu operating system. By default, only the home directory of the root user is in the root directory instead of the /home directory.
/sbin: Store the most basic management commands in the Ubantu operating system, and only general administrator users have the authority to execute them.
/usr: Store other user applications, usually divided into many subdirectories, used to store different types of applications.
/var: Store files that frequently need to be changed in the system, system log files, user mailbox directories, etc.
26. View kernel version uname -r
27. View cpu information cat/proc/cpuinfo
28. View memory size cat/proc/meminfo
29. View hostname hostname
30. View IP address ifconfig ens33
31. Shutdown operation shutdown -h now poweroff
32. Restart operation shutdown -r now reboot
33. Delay shutdown or restart operation shutdown -r + time "The system will be rebooted!!"