The mechanical tough disk is composed of a magnetic disk. The magnetic disk has a memory function (similar to CDs, recorded songs, as long as it can be not broken, and may remember information for more than 30 years). When deleting files, the data is just not deleted in the disk, but this The disk space occupied by the file is indicated as empty, and the status is written for the disk header to inform the hard disk that the disk is 'empty' and is out there. When recovering, provided that this segment of disk just isn't written with new data once again, the deleted data may be totally restored.
U disks and even SSDs can not do this, because they use flash memory as the medium. The flash memory consists of numerous components with only two states of 0 and 1 (referred to as A for short), plus the initial state of A is 0. When writing data, a particular continuous A in the flash memory will come to be a mixture of 0 and 1, and distinct combinations are expressed as diverse information. For instance, a combination of 8-bit A, expressed as 01100111 and 10111001, represents two diverse data. In https://squareblogs.net/bayshovel39/this-post-was-last-edited-by-loveyanyu-at-2016-4-1821-48 corresponding to a file is represented as 1001110011100001 inside the flash memory, when deleted, its A section inside the flash memory becomes 0000000000000000, and it really is written to the flash memory header to inform the U disk or SSD: 'This section is deleted, If it really is empty, the subsequent time you write to this place, you are able to create directly. ' It could be observed that the deletion of information within the flash memory directly modifications the A state to 0, which has destroyed the original data. Even though it truly is restored, it truly is restored to 0000000000000000. Compared with all the original information, the bit of A is 0 could be the very same, however the bit of A is 1. Changed to 0. So even though the file status corresponding to this data might be recovered, the opening is garbled, due to the fact only the bit pair of 0 is on, as well as the bit pair of 1 just isn't, so the recovered file can no longer be made use of generally.
As a result, data deleted by flash drives such as U disks or SSDs cannot be recovered. Absolutely everyone need to develop a great habit of backing up when utilizing them. Data is priceless.
hard drive recovery software is answered determined by your own information, and you are welcome to point it out.