No
No chance !... Once a file is deleted, the memory previously used by that file is marked as 'free' space. As you say, you've '...used it since the files were deleted...' - I can almost guarantee the deleted files will not be recoverable !
They stay on the computer, but the space they used is marked as being free to be used by other files. So as you create new files and save other files, they will start to use the space where the deleted files are, and eventually they will be completely overwritten. Because they are still there, this is why it is still possible to get some deleted files back if you try to do so soon after they are deleted. The more time you leave the more likely it is that the space they are in will be used by other files, making it impossible to get them back.
Disk Defragmentation
In Windows, files are usually not initially "deleted"; they are moved to the Recycle Bin, so that they could be restored later, or, if you choose, permanently delete them. Since they are not deleted, they still occupy space on the hard drive.
Yes. It allocates all the files to a contiguous space in memory
The Recycle Bin.
I'm not sure I understand why you're asking this question. Contiguous files are simply files that are not broken up in pieces. As you disk fills up, when you delete files to make more room, the free space is scattered all over the disk. If you download a large file, or install software, there may not be enough room in any single place on the disk to fit the entire file. Windows puts chunks of the file in several places to make it fit. This can slow down the time it takes to load the file. When you defrag the disk, it attempts to make as many files contiguous as possible. Deleting contiguous files should be exactly the same procedure as with any other file. However, some files that the system uses must be contiguous. They can't be deleted because they are in use by the system. If you have any questions, please email me or check out my profile.
Data file recovery retrieves deleted files by scanning the hard drive. When a file is deleted, its data is still capable of being recovered as long as the space it was in on the hard drive has not been rewritten.
It is used to reuse the space from deleted files for new files, if it is possible. System contains a free space list that holds the list of free spaces in disk...
DOS allocates files using a File Allocation Table (FAT), which keeps track of which clusters on the disk are occupied and which are free. When a file is created, DOS finds free clusters, marks them as used in the FAT, and links them together to form a chain that represents the file's location on the disk. This method allows for efficient space management and retrieval of files, but can lead to fragmentation over time as files are created and deleted. The allocation process is primarily sequential, favoring contiguous space when possible.
You probably deleted some files that are used to open Yahoo! mail. Try updating your browser and other programs on your computer such as Flash.
You need to use third-party software that specializes in retrieving deleted files. Two good options are: Fast File Undelete and SmartSoft Undelete. http://www.dtidata.com/fast_file_undelete.htm http://www.recoverdeletedfilestool.com/