If you Google, mostly you’ll find tools and guides for recovering deleted files on Windows. So unless the OS overwrites upon a deleted file, it can still be recovered. The OS simply refuses to actively allocate hard disk space to the file and will overwrite over it whenever required. When a file is deleted completely, it is still hasn’t really been deleted. PhotoRec ignores the filesystem and goes after the underlying data, so it will still work even if your media's filesystem has been severely damaged or re-formatted.The Linux user can easily recover deleted files, even in Ubuntu and in general, Linux. Let’s see a couple of solutions to recover a deleted file on Ubuntu. It is designed to recover files including video, documents and archives from Hard Discs and CDRom and lost pictures from digital camera memory. PhotoRec is a companion program for TestDisk. Those more familiar with such procedures should find TestDisk a handy tool in performing onsite recovery. For those who know little or nothing about data recovery techniques, TestDisk can be used to collect detailed information about a non-booting drive which can then be sent to a tech for further analysis. TestDisk has features for both novices and experts.

Recover NTFS boot sector from its backup.

Recover FAT32 boot sector from its backup.

Fix partition table, recover deleted partition.Partition table recovery using TestDisk is really easy. It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software, certain types of viruses or human error (such as accidentally deleting your Partition Table). TestDisk is a powerful free data recovery software.

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