Scenarios
The system reinstallation operation can recover an instance to its initial status after its first launch. It serves as a key recovery method when the instance encounters system failures. This document provides guidance on how to reinstall the operating system.
CVMs support the following two types of system reinstallation, both of which are available across all regions.
- Reinstall on the same platform: For example, Linux is reinstalled as Linux, and Windows is reinstalled as Windows.
- Reinstall on different platforms: For example, Linux is reinstalled as Windows, and Windows is reinstalled as Linux. Note:
Currently, all newly added Cloud Block Storage instances and local disk instances support system reinstallation on different platforms.
Must-Knows
- Reinstallation preparation: The contents of the system disk are lost after reinstallation, so you need to back up important information on the system disk before reinstallation. If you need to preserve system running data, it is recommended that you create a custom image before you reinstall the system and select the image for reinstallation.
- Image selection suggestions: It is recommended to use the image provided by Converge Cloud or a custom image for reinstallation. It is not recommended to use images from unknown sources or other sources. Do not perform other operations while reinstalling the system disk.
- Reinstall time: Generally speaking, it takes 10 minutes to 30 minutes.
- Instance physical properties: The public network IP of the instance will not be changed.
- System disk related: The system disk size can be adjusted during reinstallation, but only Cloud Block Storage is supported.
- Subsequent operations: After the system disk is reinstalled, the data on the data disk is not affected but needs to be mounted again.
Operation Steps
You can reinstall the operating system in the following ways:
- Using Console to Reinstall System
- Use API to Reinstall System
Using Console to Reinstall System
- Log in to the CVM console.
- In the row of the instance where the system needs to be reinstalled, click More > Reinstall System.
- In the pop-up Reinstall System window, select Use the current machine image or other image, adjust the disk size, enter the password, and click Start Reinstallation.Note:
The password is the one you configured when configuring the Cloud Virtual Machine instance or the one that is automatically generated. If you have forgotten your Cloud Virtual Machine log-in password, see Reset Instance Password to reset the password.
Using API to Reinstall System
Refer to API Documentation > ResetInstance API.