Please create a vdi disk image for virtual box with openWrt 21.
How it's done here:
https://archive.openwrt.org/attitude_adjustment/12.09/x86/generic/
Please create a vdi disk image for virtual box with openWrt 21.
How it's done here:
https://archive.openwrt.org/attitude_adjustment/12.09/x86/generic/
Is what you want not located here?
https://downloads.openwrt.org/releases/21.02.2/targets/x86/generic/
or in the legacy or 64 folders?
You can do this yourself:
has a section on how to convert the .img image to a VDI VirtualBox can use, using a tool that comes with VirtualBox. I can confirm this still works on 21.02.
Only takes 2 commands to complete. I don't bother to test, but these should work:
unzip "openwrt-21.02.2-x86-64-generic-ext4-combined-efi.img.gz";
qemu-img convert -f raw -O vdi \
"openwrt-21.02.2-x86-64-generic-ext4-combined-efi.img" \
"openwrt-21.02.2-x86-64-generic-ext4-combined-efi.vdi";
I don't see any necessities to provide one as long as you have the raw image.