Hello, removing controller RAID ram was not a good idea.... So, I have reinserted RAM and in system bios configuration have changed controller RAID configuration from RAID to SCSI mode. After reboot system, I have inserted Win Srv 2008 R2 CD and the system run Windows setup and can see HD space! I have installed Windows and now it works! Great! Thanks for the little support. Fabio
Hello, I have a PE 2850 server with controller raid Perc 4e/Di with attached 4 HD SCSI Ultra 320 on 146GB configured in RAID 5 mode. 4 months ago, 2 HD of RAID 5 was corrupted and we decided to switch off definitively because we don't want to substitute HD corrupted. Before trash it, I tried to install Windows 2003 R2 SP2 using 1 HD in RAID 0 mode (I tried with Win 2k8 R2 but it have the same issue). Here is the list of the operations done:- before swith on server I leaved only 1 HD at position 0 inside- During POST, I choose CTRL+M to enter into RAID controller BIOS but it presents presents a message: "Memory/Battery problems were detected. The adapter has recovered but cache data may be lost. Press any key to continue. " I choosed space key to continue.- Cleaned existing RAID configuration- cleaned existing data on physical HD (no error found on HD) - I configured RAID 0 logical disk in RAID 0 mode and initialized it. I saved configuration, inserted Win 2k3 r2 SP2 CD  and restarted server.- During POST, the RAID controller presents the same message "Memory/Battery problems were detected. The adapter has recovered but cache data may be lost. Press any key to continue. ". I choosed space key to continue.- Windows setup started and after agree conditions, I choosed to install Windows into unique logical disk visibile, formatting it in NTFS mode. - after formatting disk, Windows start to copy file on HD but it stop before ends (1st time at 6%, 2nd time at 8%). I tried to change RAID 0 write mode configuration from WRITE BACK to WRITE TROUGH but the issue was the same.The same happen if I tried to install Windows 2008 R2.It is a problem of HD corrupted? I tried all operation above with other HD but issue was the same. I don't understand if the problem was the controller RAID or HD. Any help will be apprecied, thanks. Fabio
Unable to install OS on PE2850 after RAID 5 failover