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Oracle VM VirtualBox is composed of:# Oracle VM VirtualBox Base Package: the executable that you have to install on your host operating system# Oracle VM VirtualBox Extension Pack: a binary package that extends the functionality of the VirtualBox base package# Oracle VM VirtualBox Guest Additions: consist of device drivers and system applications that optimize the guest operating system for better performance and usabilityObtain VirtualBox from your linux distribution's repository.Obtain VirtualBox from the Official Oracle repository (newer version).* [https://download.virtualbox.org/virtualbox/ Versions files and extension packs]For an example since the test machine has VirtualBox version 7.0.14r161095 the file Oracle_VM_VirtualBox_Extension_Pack-7.0.14-161095.vbox-extpack was downloaded as it is an exact match. vboxmanage is used to install the extension pack... sudo vboxmanage extpack install Oracle_VM_VirtualBox_Extension_Pack-7.0.14-161095.vbox-extpack=== Windows 7 64-bit Extremely Slow ===Windows 7 Home Premium SP1 (64 Bit) runs very slow in virtual box.It was noted in the log several lines indicating AsyncCompletion delays. This is disk related. 01:12:42.042957 AsyncCompletion: Task 0x007f0767284200 completed after 30 secondsenable the Host I/O Cache in Storage > Controller: SATA. ... RESOLVED PROBLEM.