I have a similar problem. I have a Z820 I got second hand. It had no HDD or OS in it which was fine for me. My plan was to install a SATA HDD and Win7 32 bit OS (I have an application that requires 32 bit). I got a fresh license and created a boot/install USB drive. I've put in a SATA HDD that was previously used and I am not sure its exact content. BIOS sees the drive. I booted from the thumb drive. It gets to the point of wanting to do the install but does not find a drive to put it on. I get the same screen as above where it is looking for drivers. I downloaded the zip file mentioned above and did the unzipping and it does not recognize anything as useful on that thumb drive (a separate one from my boot stick). I downloaded a couple of LSI SAS drivers as well and it does not see those as useful either. I'd be happy to wipe this drive and format it fresh but don't see a path to do that either. Help?
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