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1. #Write protected usb drive format software free download how to
2. #Write protected usb drive format software free download windows 10
3. #Write protected usb drive format software free download portable

If you format the drive with Command Prompt, it will tell you it can't format to FAT32 because the volume size is too big. However, if you format the drive in File Explorer or Windows Disk Management, the "FAT32 not an option" issue will occur. Sometimes, you have to format a drive larger than 32 GB to FAT32.

#Write protected usb drive format software free download how to

If you want to know more about cluster size, you can read this post: What Allocation Unit Size Should I Use For FAT32? How to Fix the FAT32 Not an Option Issue Obviously, the smaller the cluster, the more fully the disk space is utilized. And in the last cluster, only 12 KB (16 - 4) space is wasted. However, if the cluster size is 16 KB, the PC will use 7 clusters to store 100 KB data. In the last cluster, only 4 KB space is used and 28 KB space is wasted, because this cluster can't be occupied by another file although it has free space still. If the file is 100 KB, it will use up 4 clusters. In general, a file can occupy multiple clusters, but a cluster can't be occupied by more than one file.įor example, if the cluster size is 32 KB, a file will be written into drive in the unit of 32 KB. The process of writing data will consume clusters. The cluster is the unit for the PC to read and write the file.

#Write protected usb drive format software free download windows 10

When you create a 32 GB FAT32 partition (32768 MB) on a 512-byte sector drive (I use Windows 10 system), the default cluster size is 32 KB, which is much larger than 4 KB, the default cluster size of NTFS file system.Ī partition is composed of many clusters. But to utilize storage space, Microsoft manually limits the max FAT32 size to 32 GB.

Therefore, the real size limit of FAT32 should be 2TB or 16TB. Nowadays, most hard drives are 512-byte sector or 4 KB sector drives. On a hard drive with 4 KB sectors and 64 KB clusters, the real size limit is 16 TB. On a hard drive with 2 KB sectors and 32 KB clusters, the real size limit is 8 TB. On a hard drive with 512-byte sectors, the real size limit of FAT32 is 2TB. Actually, the reason why you can't format to FAT32 is that the FAT32 file system has size limit (32 GB), which is set by Microsoft manually. If they format the drive in Windows, the system will not display the FAT32 option. Nowadays, they want to extend the storage but they find that the system can't format the drive to FAT32. Some people may have old devices (such as PSP, XBOX360, some TVs and some XP machines without exFAT patch) that only support FAT32 file system.

#Write protected usb drive format software free download portable

It is widely supported by many portable and embedded devices. Released in 1977 by Microsoft, FAT32 is the most common version of the FAT file system and has great compatibility. My only options are exFAT (default) and NTFS. When I try to format the new drive, it doesn't have a FAT32 option.