问题：通过pve5安装windows 2008和2019操作系统时，选择scsi设备时，在安装阶段就使用从fedora下载的vvirto.iso(版本为0.1.185)时，直接提示“找不到签名的驱动设备程序”，fedora的相关说明以及下载页面为：https://docs.fedoraproject.org/en-US/quick-docs/creating-windows-virtual-machines-using-virtio-drivers/ 摘录部分说明如下：
ISO is used to install paravirtual drivers in Windows guests. The virtio-win/*.iso included in the RPM contains the following bits:

NetKVM/ - Virtio network driver

viostor/ - Virtio block driver

vioscsi/ - Virtio Small Computer System Interface (SCSI) driver

viorng/ - Virtio RNG driver

vioser/ - Virtio serial driver

Balloon/ - Virtio memory balloon driver

qxl/ - QXL graphics driver for Windows 7 and earlier. (build virtio-win-0.1.103-1 and later)

qxldod/ - QXL graphics driver for Windows 8 and later. (build virtio-win-0.1.103-2 and later)

pvpanic/ - QEMU pvpanic device driver (build virtio-win-0.1.103-2 and later)

guest-agent/ - QEMU Guest Agent 32bit and 64bit MSI installers

qemupciserial/ - QEMU PCI serial device driver

*.vfd VFD floppy images for using during install of Windows XP

Due to the signing requirements of the Windows Driver Signing Policy, drivers which are not signed by Microsoft will not be loaded by some versions of Windows when Secure Boot is enabled in the virtual machine. See bug #1844726