When configuring the RescueBoot settings, please make sure that the physical memory has 3GB or more available space.
Even when the physical memory has 3GB available space, if kdump is enabled, the available space in memory becomes smaller than 3GB.
RescueBoot settings cannot be configured in the environment as such. If you have to configure RescueBoot settings, 3GB or more memory space after reduction of kdump has to be 3GB or more or otherwise please disable kdump.
– ActiveImage Protector 2022 Linux