![disk genius 32 kb clusters fat32 disk genius 32 kb clusters fat32](https://i.ytimg.com/vi/Vt0SwLJ4EZQ/maxresdefault.jpg)
If a 20 MB hard disk was later installed and formatted with MS-DOS 2.0, the resultant cluster size would be 8 KB, the boundary at 15.9 MB.
#DISK GENIUS 32 KB CLUSTERS FAT32 PC#
The 10MB hard disk on the PC XT had 4KB clusters. The format of the FAT itself did not change. This number could now be equal to the number of clusters (or even greater, using zero-sized files). The use of directories allowed FAT12 to store many more files on the hard disk, as the maximum number of files was no longer constrained by the root directory size. This version of FAT12 introduced hierarchical directories. The release of MS-DOS 2.0 occurred at the beginning of 1983. The maximum size of a partition was 32 MB. This first version was very simple and restricted: no support for hierarchical directories, disk addresses were 12 bits long and the disk size was stored as a 16-bit count of disk sectors, which limited the size to 32MB.
![disk genius 32 kb clusters fat32 disk genius 32 kb clusters fat32](https://www.diskgenius.com/how-to/img/recover-deleted-vidoes-02.png)
The initial version of the FAT file system is called FAT12.
![disk genius 32 kb clusters fat32 disk genius 32 kb clusters fat32](https://image.slidesharecdn.com/htcia-demystifyingthemicrosoftextendedfilesystemexfatv1-00-100924191858-phpapp01/95/demystifying-the-microsoft-extended-fat-file-system-exfat-44-728.jpg)
The FAT file system is also use for most mobile media storage (for example, compact flash or multimedia cards). This first file system - called the FAT file system for its use of a file-allocation table - is still in use, in more evolved forms, in modern versions of Microsoft Windows. In 1977, the FAT file system debuted on IBM PCs using the Microsoft Disk Basic system. When Microsoft developed the first operating system to run on IBM hardware, it needed to invent a file system for the computer's hard drives.