[ASK] Error install proxmox on HPE DL380 Gen9

[searvent]

Hello all.
I just learned, and will install proxmox on HPE DL380 Gen9, where 2 HDD is made RAID1 but when booting the installation an error appears:

error: unkwnown filesystem
grub rescue>

what's the solution?,

 

[Moayad]

How did you installed proxmox from USB? [1]

Have you tried to install Proxmox VE on Debian Buster? [2]

[1] https://pve.proxmox.com/pve-docs/ch...pare_a_usb_flash_drive_as_installation_medium
[2] https://pve.proxmox.com/pve-docs/chapter-pve-installation.html#_install_proxmox_ve_on_debian

 

[searvent]

How did you installed proxmox from USB? [1]

Have you tried to install Proxmox VE on Debian Buster? [2]

[1] https://pve.proxmox.com/pve-docs/ch...pare_a_usb_flash_drive_as_installation_medium
[2] https://pve.proxmox.com/pve-docs/chapter-pve-installation.html#_install_proxmox_ve_on_debian

[1] I use rufus for bootable USB
[2] The second I haven't tried, I'll try

 

[searvent]

How did you installed proxmox from USB? [1]

Have you tried to install Proxmox VE on Debian Buster? [2]

[1] https://pve.proxmox.com/pve-docs/ch...pare_a_usb_flash_drive_as_installation_medium
[2] https://pve.proxmox.com/pve-docs/chapter-pve-installation.html#_install_proxmox_ve_on_debian

solved. I replaced bootable Rufus with etcher, the error has disappeared and can be installed, thanks .
But for HDD 2 is still detected, while the hardware controller has made RAID 1. Do you have any suggestions?