Server not booting - Operating System not found on start up screen
by fawaz25 from LinuxQuestions.org on (#5QJVP)
Hello Linux/VMWare community,
I am facing issues after rebooting one of my RedHat Linux7 server in VMWare VSphere 7 environment.
Server is not booting up after rebooting the server. It is unable to boot from disk. It says Operating System not found.. it is unable to find the disk to boot from ..
The VM is a backup VM which is used to take backups of other VMs and also used to restore the VMs from backup. I see that there are multiple disks of different VMs (that were being backed up) attached to this VM. Some of them are still attached to this VM. Some of the virtual hard disks are of bus type SATA while others are SCSI bus type. And the server was rebooted after verifying no active backup job being run on the VM. After reboot, server is not booting up..
I checked the VM options, went into BIOS and selected Hard disk to be at the top of the boot order and tried to check the hard disk sequence to boot from.. But I am unable to find SCSI0:0 disk in the list of hard disks inside BIOS that holds my Operating system. On the screen to change boot priority, I can just see hard disks with bustype SATA maximizing the Hard disk options. I am unable to see any disks with bus type SCSI in that menu.. so I am unable to force the VM to boot from specific hard disk that has my OS. or atleast put my hard disk which has OS to be at the top in Hard disk priority.
Do you have any suggestions? Any suggestions would be highlights appreciated.
I am facing issues after rebooting one of my RedHat Linux7 server in VMWare VSphere 7 environment.
Server is not booting up after rebooting the server. It is unable to boot from disk. It says Operating System not found.. it is unable to find the disk to boot from ..
The VM is a backup VM which is used to take backups of other VMs and also used to restore the VMs from backup. I see that there are multiple disks of different VMs (that were being backed up) attached to this VM. Some of them are still attached to this VM. Some of the virtual hard disks are of bus type SATA while others are SCSI bus type. And the server was rebooted after verifying no active backup job being run on the VM. After reboot, server is not booting up..
I checked the VM options, went into BIOS and selected Hard disk to be at the top of the boot order and tried to check the hard disk sequence to boot from.. But I am unable to find SCSI0:0 disk in the list of hard disks inside BIOS that holds my Operating system. On the screen to change boot priority, I can just see hard disks with bustype SATA maximizing the Hard disk options. I am unable to see any disks with bus type SCSI in that menu.. so I am unable to force the VM to boot from specific hard disk that has my OS. or atleast put my hard disk which has OS to be at the top in Hard disk priority.
Do you have any suggestions? Any suggestions would be highlights appreciated.