26, April 2017: exFAT (Extended File Allocation Table) is a Microsoft file system optimized for flash memory such as USB flash drives and SD cards. It is proprietary and Microsoft owns patents on several elements of its design.
exFAT can be used where the NTFS file system is not a feasible solution (due to data structure overhead), yet the file size limit of the standard FAT32 file system is unacceptable.
exFAT has been adopted by the SD Card Association as the default file system for SDXC cards larger than 32 GiB.
When exfat partitions are deleted or formatted, the success rates of recovering big files or frequently modified files are very low. For example, it is very difficult to completely recover the XLS or CDR files which are edited and modified frequently. But files remain untouched enjoy a high success rate. For example, it is very easy to recover PDF, JPG or MPG files which are not modified frequently. It is because that the FAT or exfat partition applies file allocation table to record the information of cluster chain fragments of each file. After the deletion or formation, the information of cluster chain fragments will be emptied. For files are edited and modified frequently, due to the dynamic increase in the file length, they usually would be stored continuously in the file system, which results the impossible recovery of file fragment information and thus incompletely recovered files
Use "unformat" to recover data from formatted exfat partition from Seagate hard drive after quick format, full format, accidentally formatted, reformatting, High-level formatting, Low-level formatting.
Use "recover partition" to recover data from deleted exfat partition from Seagate hard drive
, lost exfat partition, changed exfat partition, damaged exfat partition from Seagate hard drive.And if the size or position of exfat partition is changed by format, It can not recover with "unformat", so you can use "recover partition" mode.
Use "undelete" to recover deleted files from exfat partition from Seagate hard drive after Virus attack, Recycle bin clear, disk cleanup, Press shift del by mistake, permanently empty recycle bin, shift delete, accidentally deleted by a mistake.
Use "Full Scan" to recover files which can not be found with "undelete" and "unformat" and "recover partition" after showing an error, display as raw file system, unformatted, unknown partition, unpartitioned, needs to be formatted.
If you get your exfat file system drive partitioned, the data is still in your system drive, but the system just cannot recognize it. Note that reformatting a disk does not erase the data on the disk, only the data on the address tables. At this time, you may use data recovery software to recover formatted files. However, if you wrote some data on the formatted drive, you may not get the formatted files back. Because the newly added data may take the place of formatted data. if the newly installed Windows system overwritten on the sectors where your important files once locates, you can recover them all. If it does; or even just overwritten a little part of the sectors where your important files once locates, you may not get these files any more.