IMG files are normally bitmap files that contain image data. Note that the creation of a fixed-size image can take a long time depending on the size of the image and the write performance of your hard disk.

So, for a 10G disk, you will have a 10G file.

It will be created on your host system which has roughly the same size as the virtual disk’s capacity. This will initially be very small and not occupy any space for unused virtual disk sectors, but will grow every time a disk sector is written to for the first time, until the drive reaches the maximum capacity chosen when the drive was created.Ī fixed size hard drive may take longer to create on some systems but it is often faster to use. It can be created either fixed or dynamically allocated.Ī dynamically allocated hard drive file will only use space on your physical hard drive as fills up up-to a maximum fixed size, although it will not shrink again automatically when space on it is freed. VDI file, stands for Virtual Disk Image, is a standard virtual hard drive that can be mounted as a separate hard disk while creating a new virtual machine using VirtualBox. VDI is the default and usable format in VirtualBox.

Today, we will see quick tip, yet useful one, about how to convert IMG Files to VDI format for Oracle VirtualBox.

Virtualbox disk image creator