User:DavidB4/workspace
The following is personal workspace. Once content is ready, I will migrate it to the appropriate location. I may use this for any number of purposes, but generally it will be used for drafts.
Please to not change the value of this content. If you see a typo or some other small problem, feel free to change this. For anything else, please ask first. Thanks!
Personal Notes: need to parse 20,000b+
For Data recovery (computers):
Data recovery for computers is the process of recovering information which has been deleted, corrupted, or "lost." This can be attempted on any digital storage media, but the methods sometimes vary somewhat depending on the device.
Logical damage
Logical damage is probably the most common problem which requires recovery. There can be several causes for this kind of problem.
Accidental deletion
It is not uncommon for someone to have a problem where they accidentally delete one or more files. Many operating systems offer a "trash can" or "recycle bin" which holds deleted files in case someone changes their mind or deleted something by accident. However, even if a file is fully deleted, it is not immediately lost. Rather, the pointer to it in the file system is removed, and the space is marked as available.
Overwritten data
Wanted information sometimes gets overwritten after it is marked as deleted. Since the operating system sees it as free space, data will simply be written to that specific sector or group of sectors almost completely destroying the old information. This prevents simple disk surface searching from finding what is wanted, but some trace of it can still exist. This trace usually exists in the form of stronger or weaker than average magnetism on a hard disk drive. Such minute differences cannot be read by a conventional computer, but specialized equipment can be used to detect and interpret them.
Malfunction
Especially when a storage device is getting worn out, it may eventually start having problems which prevent some date from being read or written.