Assignment C

1. Assignment C
S1240064 Akane Uchita

2. Introduction
Now, many people posses PC.
I think that people have important file in PC.

3. About File data
• text data
• Picture
• Movie
• Slide
…etc

4. When a file is saved to a computer…
• The file is stored in multiple sections, called clusters, on the
hard drive.
• And the more information, the larger the file, and the more
space it takes on the hard drive.

5. Saving file data
• The computer only saves a file to clusters of the hard drive
that it thinks of as "empty.”
• It also creates a record of where it stored the file in a large
table.

6. If I erased the file by mistake…
• I think that data is stored in the trash can.
• So I think that data will not be completely
erased.

7. What happens ?
What happens when you delete a file by
emptying the Trash/Recycle Bin on a
Windows or Mac operating system?

8. Experiment
1. I prepare the file.
2. I discard the file in the trash can.
3. I empty the trash can.
4. I use restoration software(Recuva).

9. Result
I succeeded!

10. that the file has not
disappeared.
s
What are a person's expectations when they say they have
deleted a file?

11. I think that the file has not
disappeared.
I think that the file has not disappeared.

12. Not be recovered
Under what conditions could a file not be
recovered?

13. Not be recovered
• If you do not notice the data erase and use it for a while or
recover the PC, the recovery establishment will go down.
• Also when the data is destroyed by a powerful virus, restoring
the data is difficult.

14. Virus infect
It is very troublesome when a computer infects
with a virus.
Outflow of personal information
Destruction of valuable data
Your computer moves without permission.
…etc

15. Summary
You can restore personal computer data.
Also, it is difficult to restore data when infected
with viruses, so I thought that anti-virus software
should be downloaded.