That is initializing a drive is a process that involves sub-processes required to prepare the drive for normal functioning in the operating system. It also analyzes (or creates a new one) the boot record table and then writes the volume, file system, and drive letter. That is, during the disk initialization, Windows determines the working parameters of the drive, the placement of the zero block, defining methods of working with software and hardware components, and the method of data distribution. Once a new disk has been connected to your computer, Windows may require you to initialize this drive.ĭisk initialization is the procedure of preparing the disk for the operating system. What is the HDD (SSD) initialization in Windows? How to fix the 'Disk Unknown, Not Initialized' error?.'Disk Unknown, Not Initialized' - causes of the error?.What is the HDD (SSD) initialization in Windows?.In this article, we will discuss, what to do if the operating system suggests initializing a hard disk or SSD drive that has been previously used and on which important data are stored.