Hi we had the same issue with FW 4.40 what worked for us was to roll back the FW to 4.20 you can then initialize vFlash then upgrade FW back to 4.40
I can see the card fine with the expected size. It wont initialize (not in idrac, not in LCC, not via racadm) I can use the vFlash card via a usb adapter and make partitions and format them fine using a Windows PC. I have two 64GB micro SD cards in the according slots and they work as expected. What can/do I need to do to make this 16 GB vFlash card usable? Best regards and thank you for your ideas already Sassan Karai
16 GB Dell vFlash card fails to initialize iDrac9 on fw 4.40 IDSDM fw 1.13