How to integrate IoT with trade data

List of contents of this article:

• 1,How to integrate IoT with trade dataLRepair of inux soft RAID system crash
• 2, How to enter Linux single-user system repair mode
• 3, linuX system white screen recovery
• 4, Regeneration Dragon restores the Linux system. There is no restore option, only backup. What should I do?

Linux soft RAID system crash repair

In fact, we just need to manually specify the partition type as soft raid format when partitioning, that is It can solve the problem./Dev/sdb2 124 246 987997+ fd Linux raid autodetect so that the raid device we made after restarting the machine can still be viewed with fdisk -l.

Restart the computer: Sometimes the computer system crashes because of a system error, and restarting the computer can solve the problem. System recovery: Most computer systems will provide recovery options, and you can try to use the system's built-in recovery function.

Note: Recovering accidentally deleted files under Linux introduces the use of "PhotoRec" to restore accidentally deleted files. Note: TestDisk is a software that recovers partition information, for the deletion of partition tables and MBR (masTer boot record) Modified recovery partition information software: TestDisk, please confirm before using.

When the computer crashes, we can find the relevant repair plan when restarting the computer. The startup repair function finds the function button to start the repair during the startup process, and then repairs our computer system to complete the repair system crash.

How to enter Linux single-user system repair mode

1. The first and the simplest. In the startup screen of grub, brighten the required kernel, press the "a" key and add the boot option. To boot the single-user mode, add the single logo after the existing kernel options, and then press the Enter key.

2. Turn on the power of the machine and let the user enter the system login interface. Take the disk is lost and the computer restarts after the disk is automatically mounted. When the system startup interface appears, press the "e" key to enter the editing mode.

3. First of all, when the inux single user enters the system and the system startup interface appears, press any key to stop in the startup interface. Secondly, press the "e" key to enter the editing page, add single or 1 at the end of the line where the kernel appears, press the "Enter key" to save and return to the editing mode.

4. Here is an introduction to how Linux enters single-user mode. When the Linux system is turned on, press ah e within 3 seconds, and then jump to the kernel interface. 03 Press e again to enter the following interface, select one of the kernel, and then press the e key.

linux system white screen recovery

1. Manually run the command. Turn off DeepiAfter the Linux 17 system special effects, manually run the command sudo rm var/cache/image-blur/*, and then if you like the background is not ipg, export it to jpg format with gimp, and then change the background. You will find that the shutdown interface is a black background now.

2. When the linux system starts up, it shows that the system has an error and cannot be restored. Please try to log out and log in again. You need to delete the original virtual machine first.

3. This is a reminder that your file system is damaged. Similar to the WINDOWS system, abnormal shutdown (such as direct power off), WINDOWS will automatically scan the hard disk. LINUX requires you to sort it out manually. It has been prompted to sort it out with FSCK.

4. Method 1: Restart the computer, press the e key when restarting, and then add single after the line of words that appear, and press b to restart. When restarting, enter the single-user mode, where you can exclude the factors that cause your system to fail to start. Method 2: Force the computer settings to be restored.

5. A higher network environment is required for remote connection, so a white screen will appear in the case of poor network signal. Remote connection is to connect another computer remotely.

Regeneration Dragon restores the Linux system. There is no restore option, only backup. What should I do?

System restoration is not effective without a system backup.Only the time point can be restored. The function of system restoration is similar, but after the system restore time point setting process, select a time to enter it into the white box of the restore page, and then select OK to enter the restoration process.

You can try to check whether there is any system recovery function before the system has a problem, such as the "Repair Computer" option in the Windows system. In addition, you can also use USB or CD and other media to boot the system, enter WinPE and other emergency maintenance environments, and use relevant tools to repair the operating system.

You can't restore it without a backup before. Open the "Control Panel". Find "Restore" on the panel and click to open it. Click "Open System Restore" on the right to open it.

such asIf you made a backup when the installation of the system was completed in the past, you can use the backup to restore the system. If you don't make a backup, it is recommended to reinstall the system. It is very convenient to install the system with a USB flash drive, which is basically similar to the steps of restoring the system.

Then select manual restore, and then manually click: click (Local-partition-Form Image) to select the disk symbol where your mirror image is located, click OK, then select the disk symbol you want to restore, click OK, and then select FAST, and it will automatically Restored. If the mirror image of the backup partition is deleted, there is no way to restore the system.