Important:  The OS Recovery process should not be started unless indicated by IBM  support. Doing so might lead to inconsistencies in the configuration of the server and the  repository, and can potentially make it unusable and extend the service actions needed to  recover it. The steps shown in Figure A-5 are mostly actions that are composed of automated  procedures that require minimal human intervention. However there is one action that  requires basic knowledge of the cluster layout on which the recovery is being performed.  This action is represented by the  Respond initial questions  box in the flowchart. The initial questions are displayed when the OS Recovery menu option is selected, as shown  in Example A-3. The initial questions are used to allow the OS Recovery process to properly  determine which node is being recovered which in turn is required to be able to display the  appropriate OS image files in case this is a dual node cluster. For this reason, the person that  is doing the recovery must be aware of the cluster configuration and also the location of the  node (upper slot or lower slot) that is being recovered in order to increase the possibilities of  recovering the system. Figure A-5 OS Recovery sequence Example A-3 OS Recovery Initial questions ++++++ Starting OS Image Recovery ++++++ Is this a dual node cluster? [Y/N] N  <---- User response Obtaining canister index Canister 2 will be recovered Is this correct? [Y/N] Y  <---- User response Appendix A. Hints and tips  443