How to delete MaHasona.exe

Friday, May 29, 2009

First run the computer in safe mode.

then goto command prompt
1. start==>run..==>cmd

2. goto directory c:\windows
c:\cd windows
3. type this - attrib -s -h -r -a autorun.inf

4. del/f autofrun.inf

5. goto sytem32 folder
c:\windows\ cd system32

6. type this - attrib -s -h -r -a explorar.exe

7. del/f explorar.exe

8. goto pendriver directory from command prompt

9. type this - attrib -s -h -r -a autorun.inf

10. type this - attrib -s -h -r -a *.*

After that open the USB driver ( Do not double click. right click on the criver==>explore)

Delete the autorun.inf file and unknow exe files in the USB.

Now its complete.

Restart the computer.

Download this Reg file and run it.

This will stop unwanted autorun files FOREVER......

No more MaHasona forever.....

Download Remover
Serial Key : PS-00YZ8H-CQ23K2-932XTQ-XYYPV9

Autorun.inf Structure

Thursday, May 28, 2009

Autorun.inf Structure

The autorun.inf file is a simple text file that can be opened up in any text editor (e.g. notepad). It always starts with a section header of:


Below this header is a list of different options. Each of these options is in the following format:



option is the option that you want to set and value is the value that you are setting for that option. So, if you had an option foo and you wanted to be set to bar, then you would enter:


(Do not use foo=bar in your autorun.inf file as it is only an example, not a real option setting.) That is all there really is to understand about the structure of an autorun.inf file. On to doing some actual cool stuff with it!

To create a custom icon for your USB drive, use the icon option. Set it to the name of the icon file.

Note: Since drive letters can change for USB drives, the file path is relative to the root of the drive. This means that if your USB drive is presently mounted on U: and your icon is located at U:\Icons\MyIcon.ico, then you would enter \Icons\MyIcon.ico for the value of this option.

For example, if you had an icon on the root of the USB drive called coffeecup.ico and you wanted this to be the icon that showed up for the USB drive, you would enter:


You are not limited to .ico files. If, for example, you have an executable with a nice icon, you can specify it as the icon file. For example:


This is valid as long as DCoTopen.exe is available on the root of the USB drive.

Some files have more than one icon embedded in them. If this is the case, you can select which icon to use by specifing the index number after the file name. For example:


This will use the second icon in the iconlib.dll file.

Naming Your USB Drive

If you would like your USB drive to display a specific name othr than the drive label created when it is formatted, use the label option. For example, if I wanted to call my drive DCoT Drive, I would add this to my autorun.inf file:

label=DCoT Drive

Now, when you look at your USB drive in My Computer, it will say DCoT Drive by the drive letter.

Setting AutoPlay Options

AutoPlay is a relatively new function of Windows XP. It allows you to set up what file is run when the USB drive is plugged into the computer and the message that you are prompted with. There are two options that work in conjunction with AutoPlay. The first is open. It specifies the program that you can run automatically with AutoPlay. So, if we wanted to run a program called DCoTopen.exe, you would add the this to your autorun.inf file:


The second option that we add is the message the user is prompted with. To set this, we use the action option. If we want the message to say DCoT Open Program, add the following to autorun.inf:

action=DCoT Open Program

Adding Context Menu Items

There are certain basic options such as Open and Explore that are available when you right click on a USB drive. But, wouldn’t it be cool to add your own? You can using a couple of lines in the autorun.inf file.

The first thing that we need to do is create an action, give it a name, and a message. We do all of this using the shell\verb option. For example, let’s say that we would like to create an action called lost. It does not matter what the actin is called. It can be anything you want. We would also like to show the message Help! I’m Lost! in the context menu. We would simply add this line to autorun.inf:

shell\lost=Help! I'm Lost!

This will display Help! I’m Lost! in the context menu so that you can click on it. But, it doesn’t know what to do when you click on it. Tell the system by using shell\verb\command option. In our example, we want to run the Lost.exe application. Adding this line will do the trick:


You can add as many of these line pairs as you want to make the context menu as custom as you want.

Changing Default Action

When you double click on your USB drive, by default it will open up the drive so that you can browse through the files. Often, it is advantageous to perform some other action when the user double clicks the USB drive icon. You do this with the shell option. If we wanted to run the Lost.exe program from the previous section automatically when we double clicked on the USB drive, we would add this line:


because lost is the name of the action that was specified in the earlier lines.

Viewing a File

If you wanted to view a file on your USB drive in the default application instead of running a program on the drive, you can substitute the open option for the shellexecute option. For example, if you wanted to open up a website called, oh, I don’t know, say in the default web browser, you could user the following:


This will work for any file. This is the equivalent of using Start - Run… and then typing in a file name and clicking OK.

How to remove autorun.inf from USB Drive

Worms spreads by creating a copy of itself and starts by autorun.inf files. It is essential to remove the malicious and autorun.inf files not only from computers but also from the source, and that is the USB Drive. PreciseSecurity have created a procedure to delete the malicious files on infected drives.

1. While the computer is still off;
2. Plugin the USB Drive
3. Insert the Windows XP CD-ROM into the CD-ROM drive. It must be the bootable Windows XP Installer
4. Start the computer from the CD-ROM drive. It will start Windows Setup screen
5. When the “Welcome to Setup” prompt appears.Press “R” to start the Recovery Console
6. If asked “Which Window installation would you like to logon to” select the number. Type “1? then Enter, if only one installation of Windows is present
7. Enter the administrator password, press Enter
8. It will bring you to command prompt, C:\Windows>
9. Proceed with the following command:
- Type d: (This is the drive letter of USB. It can be e: or f: defending on how many hard disk or cd drive is installed)
- Type attrib -h -r -s autorun.inf
- Type “edit autorun.inf” it will open DOS Editor and display contents as follows
Take note on the file that it called to open (in above example it is file.exe)

10. Exit DOS Editor and return to command prompt, D:\>
11. Delete the file that was called to open on DOS Editor
- Type del /f /a file.exe

12. Delete autorun.inf file
- Type del /f /a autorun.inf

13. Exit Recovery Console by typing exit.

FM transmitter

Monday, May 25, 2009

Parts List
R1 4K7        R4 150K     R7 3K9 (2K7)

R2 4K7 R5 220R R8 120R (82R)

R3 4K7 R6 4K7

All resistors except R8 are at least 0.25W rated. R8 is at least 0.5W rated
(the 0.6W metal film M-series from Maplin can be used for R1-R8).

C1 1n C4 22uF C7 10n C10 1n

C2 4u7 C5 1n C8 1n

C3 1n C6 10n C9 33pF

VC1 5-60pF IC1 LM358 Q1 ZTX108

L1 is 0.112uH (this tunes to the middle of the FM band, 98 MHz, with VC1 at its centre value of 33pF).

L1 is 5 turns of 22 swg enamelled copper wire close-wound on a 5mm (3/16") diameter former. Alternatively, you can have a fixed 33pF cap instead of VC1 and have L1 as an adjustable molded coil (eg UF64U from Maplin). VC1 will give you a tuning range of 85 - 125 MHz, and a possible choice is the Philips type polypropylene film trimmer (Maplin code WL72P).

Two sets of oscillator bias resistors are given, the ones in the brackets give about 20% more RF power.

Mike is our favourite Omnidirectional sub-mini electret (Maplin code FS43W). Ant is a (lambda / 4) whip monopole (eg 76 cms of 22 swg copper wire).

Q1 is configured as a Clapp oscillator. Frequency modulation results from the audio voltage changing the transistor's base-emitter capacitance.

FM transmitter 2

Part List

Designing and construction of a mechanical electrode arm for

Saturday, May 2, 2009

Fabrication of thin films using electrodeposition requires different times ranging from minutes to hours and sometimes even days depending on the thickness, the number of layers and the composition of the layered structures. An automated deposition mechanism helps such growth processes reducing the human involvement thus saving the time and money. This paper discusses the construction of such an automated mechanical device that can be used to fabricate multilayer thin films electrochemically using the multiple bath technique. It simply functions as a robot. The constructed robot is not really much faster than humans, but it is good at simply doing the same job over and over again.

This work reports the design and construction of an automated device to fabricate multilayer thin films using electrodeposition technique. Deposition of such films takes times ranging from minute to hours. This device has been constructed in such a way that it can be used in such cases. The constructed mechanical device works as a robot consisting of two degrees of freedom enabling it to move in a Cartesian workspace. A microcontroller was employed for regulating all on-board operations and a stepper motor driver circuit controlled the two stepper motors. The device that has vertical and horizontal spans of approximately 0.12 m and 0.30 m respectively can be used for deposition times of seconds to days using multiple baths. With further modifications, the device can be developed as a commercial product.

The constructed robot consists of a manipulator, an end effecter controlling unit and a power unit. Manipulator is the mechanical unit that provides motions similar to that of a human arm. The individual joint motions are referred to as degrees of freedom and each axis is equal to one degree of freedom. End effector is the device that is mechanically opened and closed, as a part of the manipulator. Mechanical grippers are the most commonly used end effectors and they are equipped with two or more fingers. The function of the power unit is to provide and regulate energy that is required for the robot to be operated. The controller device initiates, terminates and coordinates the motions and their sequence. It accepts necessary inputs to the robot and provides the output driven signals to controlling motors or actuator to correspond with the robot movement and the outside world. Robots are classified [1] according to their “Arm geometry”,” Degrees of freedom”, “Power source”, “Path control” and ”Intelligent level”. The constructed robot has two degrees of freedom and it operates in Cartesian work space. The robot has been used to function totally by means of electrical power.

Undergraduate Project