Dell PowerEdge R7525 EMC PowerEdge RAID Controller S150 Users Guide - Page 43
Unable to modify any feature settings in UEFI or OPROM, Extra reboot during OS installation
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NOTE: Ensure that there is constant power supply to the system (A UPS is recommended). NOTE: If you create a virtual disk using Dell LifeCycle controller, then the physical disk write cache policy is set to default. For more information about the physical disk write cache policy behavior, see the Managing the physical disk write cache policy for SATA drives section. Unable to modify any feature settings in UEFI or OPROM Likely cause: You cannot modify the settings in UEFI or OPROM if the number of virtual disks exceeds than 30. Corrective Action: To resolve this issue: 1. Start the operating system. 2. Use OpenManage to ensure that the maximum number of virtual disks does not exceed 30. Extra reboot during OS installation Description Likely Cause: The system may reboot one extra time during the OS installation using driver-injection method. SATA in RAID mode and NVMe in non-RAID mode may cause an extra reboot on system with NVMe PCIe SSDs during OS installation. OS installation failing on NVMe PCIe SSD with third-party driver Likely Cause: Using third-party driver for NVMe PCIe SSD while NVME mode is set to RAID may cause the OS installation to fail. Corrective Action: Third-party drivers for NVMe PCIe SSDs are not supported in NVMe in RAID mode. Server performance is slow and crashes during OS installation on the SATA configuration Likely Cause: One or more SAS drives is connected along the SATA drives in the server. Corrective Action: Disconnect the SAS drives connected to the server. SAS drives is not supported on the SATA configuration. Server performance is slow during OS installation on the NVMe configuration Likely Cause: One or more SAS drives is connected to the server on the NVMe configuration. Corrective Action: Disconnect the SAS drives connected to the server. System startup issues To troubleshoot system startup issues, review the following: Troubleshooting your system 43