T3000 server cannot be facilitated into OS.

1.2 After plugging OS disk, if the disk online indicator is not red 3minutes later, the OS disk has no problem. Do the follow steps.
1.3 If the disk online indicator is red 3 minutes later, the OS disk has fault. Do OS fault operating.
1.4 If server enter the OS through system facilitation, fault disappears. If the fault still exists, do next step.
Reason 2: The facilitating device is wrong in BIOS setting. 
Handling method:
2.1 Start server, press “Del” to enter BIOS setting interface
2.2 Select “IPMIBoot” menu with arrow keys.
2.3 Set “1st Boot Device” as “SCSI”, which as shown below.

2.4 Press “F10” to save and exit BIOS interface, the device enters OS through system facilitation. Fault disappeared. If fault exists still, do next step.
Reason 3: System disk fault
Handling method:
3.1 Change faulty disk.
3.2 Install OS
3.3 If server can enter OS after changing disk, fault disappeared. But if fault exists still, do next step.
Reason 4: OS is damaged 
Handling method:
4.1 Reinstall OS
4.2 After reinstalling OS, if the server enters OS through system facilitation, fault disappeared.