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exFAT continues to be adopted from the Sdcard Association because the default file system for SDXC cards greater than 32 GiB.
When exfat partitions are deleted or formatted, the results of recovering big files or frequently modified files are very low. By way of example, it’s very difficult to completely recover the XLS or CDR files that are edited and modified frequently. But files remain untouched have a high recovery rate. By way of example, it’s very easy to recover PDF, JPG or MPG files that are not modified frequently. It is because that this FAT or exfat partition applies file allocation table to record the data of cluster chain fragments of each one file. After the deletion or formation, the data of cluster chain fragments will likely be emptied. For files are edited and modified frequently, due to the dynamic rise in the file length, they generally will be stored continuously in the file system, which ends up the impossible recovery of file fragment information thereby incompletely recovered files
Use “unformat” to extract data from formatted exfat partition from WD hard drive after quick format,full format,accidentally formatted,reformatting,High-level formatting,Low-level formatting.
Use “recover partition” to extract data from deleted exfat partition from WD hard drive
,lost exfat partition,changed exfat partition,damaged exfat partition from WD hard drive.And when the dimensions or position of exfat partition is modified by format,Structured recover with “unformat” ,in order to use “recover partition” mode.
Use “undelete” to extract deleted files from exfat partition WD hard drive after Virus attack,Trash can clear,disk cleanup,Press shift del in error,permanently empty trash can,shift delete ,accidentally deleted by way of a mistake.
Use “Full Scan” to Western Digital exfat file system recovery which can ‘t be found with “undelete” and “unformat” and “recover partition” after showing a mistake,display as raw file system,unformatted,unknown partition,unpartitioned,must be formatted.
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exFAT allows individual files greater than 4 GiB, facilitating long continuous recording of HD video which can exceed the 4 GiB limit in under an hour. Current video cameras using FAT32 will break the playback quality files into multiple segments of roughly 2 or 4 GiB. With the increase of capacity along with the increase of data being transferred, the write operation must be made more effective. SDXC cards, running at UHS-I possess a minimum guaranteed write speed of 10 MBps and exFAT plays an aspect in achieving that throughput through the decrease in the file system overhead in cluster allocation. This can be done through the introduction of a cluster bitmap and elimination (or reduction) of writes for the FAT table. Just one bit in the directory record suggests that the file is contiguous, telling the exFAT driver not to include fat deposits table. This optimization is analogous to an extent in other file systems, apart from it simply refers to whole files, instead of contiguous areas of files.
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