Analysis of advantages and disadvantages of u disk FAT32 and NTFS

First, FAT32 file system

FAT32 uses 4 bytes (that is, 32 bits) of space to represent each sector (sector) configuration file, which is called FAT32. The maximum partition capacity of the FAT16 is 2047MB, while the lower partition capacity of the FAT32 is 512MB, and the upper limit of the different operating systems is different, for example, Win2000 the largest support 32GB FAT32 partition, and the WinXP is up to 2TB FAT32 partition.

　　1, FAT32 compared to FAT16, the advantages are as follows:

Partitions larger than 2GB can be supported. Up to 2TB, even the current maximum capacity of the hard drive can support, let alone a U disk; The space utilization is more high. FAT32 uses smaller clusters to save data more efficiently, such as two partitions of 2GB, one partition using the FAT16 file system, and the other partition using the FAT32 file system. The cluster size of the FAT16 partition is 32KB, and the FAT32 partition is only 4KB in size. This allows FAT32 to be more efficient than FAT16 storage when shredding files, which can typically be increased by 15%. Security is new and better. The FAT32 file system can reposition the root directory and use the backup copy. In addition, the FAT32 partition's boot record is included in a structure that contains critical data, reducing the likelihood of computer crashes. Flexibility is even higher. The root folder on the FAT32 partition is a normal cluster chain, so it can be anywhere on the drive. Previous restrictions on the number of root folders no longer exist. In addition, you can disable file allocation table mirroring so that you can have a copy of the file allocation table rather than having the first file allocation table active. These features allow you to dynamically resize FAT32 partitions. However, note that although the FAT32 design allows this functionality, Microsoft's own partitioning software does not support this feature and requires third-party partitioning software.

　　2, the use of FAT32 format 2GB u disk, a smaller cluster

　　3, FAT32 's shortcomings

Although the FAT32 2TB maximum partition capacity is still not obsolete to the maximum capacity of the partition, FAT32 can only store a single file of up to 4GB, so FAT32 cannot hold the CD-ROM ISO image, high-definition video, various graphic work files, etc., which is its fatal disadvantage.

　　Second, NTFS file system

The NTFS (New Technology file system) is the file system of the Windows NT core and Advanced Server network operating system environment. The goal of NTFS is to provide higher reliability than FAT32 and to eliminate the limitations of the FAT file system.

In addition to supporting larger partitions, larger files, and less hard disk space, the NTFS file system provides many features that the FAT file system does not dare to imagine. Mainly include: Long file names, compressed partitions, event tracking, file indexing, high fault tolerance, data protection and recovery, encrypted access ...

　　1. NTFS supports files larger than 4GB

Because the NTFS partition has become the absolute mainstream format of the current computer disk, XP, Vista, Win7 the partition format to the NTFS system by default, so the various advantages and features of NTFS are unnecessary to emphasize, it can be said that NTFS is the best disk file system at present, But why do u disk and various memory cards rarely use the NTFS file system?

　　2. NTFS defects on flash memory

NTFS has many advantages, but these are for traditional mechanical hard disk design, for the emerging flash flash material does not necessarily apply. NTFS partitions are a "log" file system, because to record the disk's detailed read and write operation, USB memory Flash storage media will cause a greater burden, such as access to a file or directory, the NTFS system on the number of reads and writes more than FAT32 come, Theoretically NTFS-formatted USB disk is more vulnerable to damage, and less than 400MB of the partition is more waste of space than FAT16.

These additional features of NTFS can cause varying degrees of damage to SSD and USB drives, so a new generation of Windows 7 operating systems is specifically optimized for SSDs, reducing the number of reads and writes and fragmentation by various means. and for the Shenzhou u disk, the bandwidth of its own USB is limited, the NTFS file system frequently read and write to occupy the channel will make the disk performance reduction, for this Microsoft specifically for mobile storage devices developed exFAT file system.