1、問題：通過pve5安裝windows 2008和2019操作系統時，選擇scsi設備時，在安裝階段就使用從fedora下載的virtio-win.iso文件 (版本為0.1.185)時，直接提示“找不到簽名的驅動設備程序”。下載virtio-win-0.1.141.iso文件（不支持windows 2019，但支持win2008）發現支持在win2008安裝階段加載硬盤scsi驅動，懷疑是0.1.185驅動打包或者沒有通過microsoft簽名有關。 win2019只好在sata磁盤類型下先安裝成功，安裝成功后再添加一塊scsi類型的磁盤，通過這樣的方式也可以安裝scsi驅動成功。
各歷史virtio版本下載：https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/archive-virtio/
fedora的相關說明以及下載頁面為：https://docs.fedoraproject.org/en-US/quick-docs/creating-windows-virtual-machines-using-virtio-drivers/ 摘錄部分說明如下：
關於virtio-win.iso驅動的有關說明如下：
iso里面有全驅動安裝程序viriot-win-gt.msi安裝文件，安裝后路徑在c:\Program files中，安裝完成后同時還安裝了ballon service windows服務
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
2、windows 內存ballon氣球
參考Dynamic Memory Management https://pve.proxmox.com/wiki/Dynamic_Memory_Management#Enable_Auto-Ballooning_on_Windows_2008r2里面有針對各個windows操作系統的說明。
安裝qemu各個驅動比較簡單的辦法就是直接安裝ISO中的 全驅動安裝包viriot-win-gt.msi安裝文件，安裝后路徑在c:\Program files中，安裝完成后同時還安裝了ballon service windows服務。此外還有virtio-win-guest.msi文件，可以通過這個安裝spice驅動（其中還包括qemu agent），官網是這么說的use the virtio-win-guest-tools wizard to install the QEMU Guest Agent and the SPICE agent for an improved remote-viewer experience.