An Important Question

[MSUWORLD]

I'm Shihab from Bangladesh. Now reading in computer science & Engineering.I'v e a Question for about a lot of days. I'm searching it a lot. But getting nothing. So, if anyone can help me here, i'll remain so much grateful to them.The question is......I'm wanting to develop a hard disk data recovery software that will retrieve deleted data from hard disk. I've to develop this software either in java or c# or c/c++.
So, if anyone have any kind of works regarding this such as codes please mail it to me at <Removed> & I have another question ...
In languages c++/ java/c#
can we determine memory location of a particular file in hard disk?
i'm explaining this. suppose i've a 10 gigabit hard disk. and all of u know that memory location of a particular file in that hard disk is a partcular digit. Can it be possible to have this memory location of a file using a programming code?
if u know anything about it please mail me.so the input & output of the program will be...
input: name of a particular file located in hard disk
output: memory location of that particular file in hard disk.

[r035198x]

You are asking for codes without making any attempts to write the programs yourself. That is not allowed here.
See the posting guidelines for more details.

[JosAH]

What is the important part of that question? I must've missed it ...
I bet it's 'urgent' too.

kind regards,

Jos

[ajos]

at <Removed>

Are we missing something here mods? :)

[r035198x]

Are we missing something here mods? :)

Not anymore.
Thanks for the tip erm, Another Jos.

[Nepomuk]

The question is......I'm wanting to develop a hard disk data recovery software that will retrieve deleted data from hard disk. I've to develop this software either in java or c# or c/c++.
...
In languages c++/ java/c# can we determine memory location of a particular file in hard disk?

Hi!
For your project, Java is not a good choice. Why? Well, Java is designed to be hardware- and environment independent. So, accessing hardware in such a direct way is possible, (as Java is turing-complete) but not easy and certainly not the sort of job, Java was designed for.
I would guess, C or C++ (or maybe C#?) are much better languages for this task. Ask your questions in those forums, you might get better help there.

Hope you're successfull!

Greetings,
Nepomuk

[JosAH]

What does Turing completeness have to do with being able to access hardware?

kind regards,

Jos

[Nepomuk]

What does Turing completeness have to do with being able to access hardware?

kind regards,

Jos

Any turing complete language can do everything any other turing complete language can do too, isn't it so? So theoretically, you can use Java to access hardware at a very deep level (e.g. write hardware drivers). Practically it would be a nightmare.

Greetings,
Nepomuk

[JosAH]

Any turing complete language can do everything any other turing complete language can do too, isn't it so?

Yep, but that is a non sequitur; a language is Turing complete if it can solve the
same class of problems as a DTM (Deterministic Turing Machine) can.

So theoretically, you can use Java to access hardware at a very deep level (e.g. write hardware drivers). Practically it would be a nightmare.

No, it has nothing to do with hardware; think of an ingenious piece of hardware
that only wants to be controled by, say, a program written in C (if it can ever
detect that); otherwise it'll explode ;-) then none of the other languages can do
what C can do.

kind regards,

Jos

[Nepomuk]

No, it has nothing to do with hardware; think of an ingenious piece of hardware that only wants to be controled by, say, a program written in C (if it can ever
detect that); otherwise it'll explode ;-) then none of the other languages can do
what C can do.

kind regards,

Jos

How about writing a C-Simulator (or crosscompiler) in Java? :-D
Of course, if a device only wants to be controlled by a program written in C, that's because it doesn't understand the other languages (or, in your example, is programmed to explode, if it receives anything but C code). So, if you'd emulate C with another language, you can control your device with that other language, can't you? And as both can do exactly what a DTM can do, such an emulation should be possible.
By the way, I'd never buy hardware, that explodes - plus I've never heard of bomb-driver-programming... ^^

Greetings,
Nepomuk

[JosAH]

How about writing a C-Simulator (or crosscompiler) in Java? :-D
Of course, if a device only wants to be controlled by a program written in C, that's because it doesn't understand the other languages (or, in your example, is programmed to explode, if it receives anything but C code). So, if you'd emulate C with another language, you can control your device with that other language, can't you? And as both can do exactly what a DTM can do, such an emulation should be possible.
By the way, I'd never buy hardware, that explodes - plus I've never heard of bomb-driver-programming... ^^

Greetings,
Nepomuk

My release II of the device also checks whether or not a C emulator tries to
control it, so that option is out. What I want to get at is that hardware control
has nothing to do with Turing completeness.

kind regards,

Jos