Home remedies to recover lost data
Who has never had a digital accident in which they lost valuable files from their computer? From deleting files by mistake or making a wrong drive when formatting, to having the bad luck of a failure in the software or the operating system … there are many causes that can leave us without our most valuable files.
In this situation, many people resort to “home” remedies and try to recover those lost data by themselves, by using some type of data recovery software that scans the disk drive for lost or deleted files.
Depending on the extent of the damage to the internal logical structure of the unit, these types of programs may be more or less effective. Sometimes, thanks to them it is possible to locate and extract some of the lost files from the disk.
But beware! Sometimes the greatest risk can be the user himself, if he does not operate properly.
Why is it possible to recover a deleted file?
To understand it in a basic way, let’s think that the file is physically recorded on a magnetic plate of the hard disk, in a specific position. The hard disk has an index that indicates the position of each file.
When a file is deleted, only its reference is removed from the index. Actually, the “deleted” file is still there. However, now its position appears as available space to record other files.
Be careful when choosing the destination of the recovered data
When the user tries to recover the data through software, it may happen that they do not have a separate disk drive at that time. And you may decide to save the recovered data to another folder within the same drive affected by the problem for more click here.
The user asks: “If there is enough free space, why not save them in another folder on the same drive?” The answer that a professional would give to this question is that “it is a terrible idea.”
Why is it a bad idea? When the files have been deleted (either intentionally, by mistake, or due to a software failure), the position they occupy in the disk drive is considered by the operating system as free and usable space.
Therefore, when creating a “new” folder, we cannot know if that folder is in a “new” space (which has not been previously occupied) or if it is a reused space. If it is a reused space, it may happen that the bits of information that make up our precious lost files are quietly found in it.
Recovered files but … corrupted?
By launching the recovery software, it will instruct the operating system to write data to the disk, and the system will gradually begin to reuse or overwrite the area where our deleted or lost files were located.
This process can make our files partially or completely overwritten, making those useless even if we recover them (see infographic below).
In other words: while we are recovering some files, we are destroying others. The result of this is a data recovery in which there will be a few files recovered correctly, and a great majority of corrupted files that do not open or display correctly, having already been irretrievably destroyed.
In conclusion, if you ever choose to recover the files you, always save the recovered files to a different physical disk drive than the one affected by the problem. This will prevent data overwriting and its irreparable loss. However, if you want to get better results and take no risk, put your disk in the hands of data recovery professionals. At salvagedata you can request a diagnosis and a budget for data recovery without obligation.