Last updated：2021-08-04 11:26:31
Kingsoft Cloud allows you to reinstall the operating system of a KEC instance for the purpose of fault recovery or for changing the type and version of its operating system.
KEC instances in all regions and availability zones allow you to reinstall the same type of operating system. You can reinstall another Windows version on a Windows KEC instance, or another Linux version on a Linux KEC instance.
KEC instances in mainland China can also be reinstalled with another type of operating system. A Linux KEC instance may be reinstalled to a Linux or Windows KEC instance, and a Window KEC instance to a Windows or Linux KEC instance. Such switching between Windows and Linux operating systems is not supported in any other region.
The free capacity is 50 GB for Linux and Windows operating systems.
If the system disk is not resized, you are not charged for reinstalling the operating system. Instance types that support system disk resizing during re-installation are E1, N2, N3, S3, C3, I3, S4, C4, and I4.
For the above instance types, if the system disk is expanded in re-installation, the difference in disk capacity will be charged. For the relevant pricing, see EBS pricing.
Before you reinstall the operating system, you must back up important data and stop the instance. Schedule the re-installation to suit your business needs.
Log in to the KEC console.
On the Instance page, select a KEC instance for which you want to reinstall the system from the instance list, and then choose More > Reinstall System above the instance list.
Set parameters on the Reinstall System page.
You must pay attention to the configuration of the following parameters: