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Seeing these advantages, you must be eager to convert FAT16 to FAT32. Under the condition that the current hardware can support, for example, if the 8GB hard disk is divided into a single partition, the size of the cluster used is only 4KB, which really saves a lot of space compared with the previous FAT16. Partition size FAT16 cluster size FAT32 cluster size The sizes of partitions and clusters are summarized as follows. The above two advantages make the use of hard disk more efficient.
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A single partition that can be used by FAT32 can reach 2TB (2048gb) at most, and the cluster size that can be used by partitions of various sizes is also appropriate. FAT32 uses 32-bit space to represent the configuration file of each sector. In order to solve the problems of FAT16, FAT32 system is developed. These two problems often make users hesitate in the choice of “how large partition can save space and make the use of hard disk more convenient and effective”. If you have 100 such small files on your hard disk, the disk space you waste can range from 700kb (511MB partition) to 3.1mb (2047mb partition). Imagine that if a file with a size of only 1KB is placed in a 1000mb disk partition, its space is not 1KB, but 16kb, which is a waste of 15KB! At present, most popular HTML files are 1KB and 2KB in size, and dozens of HTML files are often used to make a website. (2) The size of the cluster used is not appropriate. The size of the partition disk involves the problem of clusters, which has a great impact. FAT16 file system can not adapt to the current high-capacity hard disk, and must be divided into several disk spaces. At present, as long as you buy a computer, the hard disk size must be at least 2GB, and hard disks of 3.2GB and 4.3GB or more can be found everywhere, and they are good and cheap. (1) The disk partition can only be up to 2GB. It can be seen from the above that FAT16 file system has two biggest disadvantages:
Can the remaining space in each cluster be used? The answer is no, so when using disk, you will lose some disk space more or less. If it is a 1KB file, it must also be stored in a cluster. If you store 50kb files in a 1000mb partition, because the cluster size of the partition is 16kb, it needs four clusters. The relationship between FAT16 partitions and cluster size is shown in the following table: Each file to be saved to disk must be configured with a sufficient number of clusters before it can be saved to disk.
The so-called cluster is the allocation unit of disk space, just like the bookshelves in the library. Therefore, after each partition exceeding a certain capacity, the cluster size used by FAT16 must be expanded to adapt to larger disk space. Among them, FAT16 and FAT32 file systems we contact most.įAT16 uses a 16 bit space to represent the configuration file of each sector, so it is called FAT16.įAT16 is inherently limited. X and below OS / 2 uses HPFS Windows NT uses NTFS And MS-DOS 7.10 and rom-dos 7.10 FAT16 and FAT32 are also provided for users to choose. Among the commonly used operating systems on personal computers, MS-DOS FAT16 is used for version 6. Different operating systems use different file systems. If the file allocation table is lost, the data on the hard disk will not be used because it cannot be located. It is very important for the use of hard disk. As the name suggests, it is a table used to record the location of files. Before describing the fat file system, we must know what fat is? FAT(File Allocation Table) means “file allocation table”.