AlstonB,   I noticed a couple things, which I want to clarify with you. First is that you have stated you replaced the H740 with an H750, but have noted the H740 after that. Would you confirm if you have updated the Windows driver for the H750? Also, I noticed in your last message that you stated "external drives", are these drives within the server, or is it an attached inclosure with drives? Let us know.  
Hi, First time writing a post here. We recently upgraded our perc card in our PowerEdge R740 from PERC H740P Adapter to PERC H750 Adapter. A new virtual disk on perc H750 has been created and is live: [IMAGE]   On the Windows Server 2019 OS I am unable to view the unallocated disk. [IMAGE] Any suggestion on what I am missing in this scenario will be greatly appreciated. Cheers.
Raid Configured on IDRAC but Windows OS unable to detect new disk