can´t install proxmox 6.3 on an dell R720

1. Check you installation target
2. You CANT BOOT FROM NVMe! unless it U.2 and u have the upgraded backplane.
 
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The strange thing is that I use wd red hdd.
Did u try to boot to proxmox install go ALT+CTRL F2 or F1 and try to clean the drive by removing partitions? Did u have it installed on the same drive last time? I did hit similar problem on reinstall, when I used dual SD module. Turned out there were read/write issues with card. Check the drive there may be some damage.
 
Did u try to boot to proxmox install go ALT+CTRL F2 or F1 and try to clean the drive by removing partitions? Did u have it installed on the same drive last time? I did hit similar problem on reinstall, when I used dual SD module. Turned out there were read/write issues with card. Check the drive there may be some damage.
sound like my problem. I only installed over the old partitions.