okay problem solved, I start with making raid in lifecycle then os deployment. Then when installation has the drive.  But still wondering why that's happened. thanks for all the answers given. Really appreciate it 
Hi, I have server poweredge r250 and want to install windows server standard 2019 but it seems like I cannot Install it. This is because when want to install, it does not detect the Hard Disk (I used Raid 0). Also try change the hard disk to Non-Raid also cannot. My server details are: Processor : Intel Xeon E-2324G 3.1Ghz RAM: 8GB UDIMM, ECC HDD: 1x2TB Hard Drive SATA RAID: Perc H755 Raid controller Adapter FYI, I already try with 1TB Hard Disk also cannot. I check at command prompt at repair my computer during windows installation to see whether it detect my Hard Disk or not, and the result is not detect. Already Update H755 firmware (update to 52.21.0-4606_A07) at lifecycle also same result. i downloaded the SAS-RAID_Firmware_RKC2R_WN64_52.21.0-4606_A07.EXE file I also try with RAID mode, AHCI mode, and off. Below is the message i get when i check in command prompt   [IMAGE]
Can't Instal windows on server r250