'VB 6.0 版 oCJbkt=
'这不是我写的,它更强悍了。因为可以直接读写物理扇区(CHS),而不是逻辑扇区。 YsAF{
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Private Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, lpSecurityAttributes As Long, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long n>llSK
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long F!~l
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Private Declare Function ReadFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToRead As Long, lpNumberOfBytesRead As Long, ByVal lpOverlapped As Long) As Long '//declare has changed 97x%w]kV
Private Declare Function WriteFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToWrite As Long, lpNumberOfBytesWritten As Long, ByVal lpOverlapped As Long) As Long '//declare has changed FDq{M?6i
Private Declare Function SetFilePointer Lib "kernel32" (ByVal hFile As Long, ByVal lDistanceToMove As Long, lpDistanceToMoveHigh As Long, ByVal dwMoveMethod As Long) As Long /2h][zrZ[.
'如果用绝对扇区写,那么文件的建立打开都不能用VB的 open 语句了。
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Private Const GENERIC_READ = &H80000000 %c1FwAC
Private Const GENERIC_WRITE = &H40000000 u33zceE8
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Private Const FILE_SHARE_READ = &H1 37KU~9-A
Private Const FILE_SHARE_WRITE = &H2 T}2:.Hk:N
Private Const OPEN_EXISTING = 3 N5\{yV21",
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Private Const INVALID_HANDLE_VALUE = -1 eycV@|6u*
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'//file seek ve
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Private Const FILE_BEGIN = 0 2nx9#B*/T
Private Const FILE_CURRENT = 1 #>q[oie1e
Private Const FILE_END = 2 aQh?}=d a
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Private Const ERROR_SUCCESS = 0& ,o)4p\nV
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'//device io control U_*3>Q
Private Declare Function DeviceIoControl Lib "kernel32" (ByVal hDevice As Long, ByVal dwIoControlCode As Long, lpInBuffer As Any, ByVal nInBufferSize As Long, lpOutBuffer As Any, ByVal nOutBufferSize As Long, lpBytesReturned As Long, ByVal lpOverlapped As Long) As Long (rMZ
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Private Const IOCTL_DISK_GET_DRIVE_GEOMETRY As Long = &H70000 '458752 KnFQ)sX^
Private Const IOCTL_STORAGE_GET_MEDIA_TYPES_EX As Long = &H2D0C04 s]bPV,"p
Private Const IOCTL_DISK_FORMAT_TRACKS As Long = &H7C018 0UD"^zgY
Private Const FSCTL_LOCK_VOLUME As Long = &H90018 yfq>,
Private Const FSCTL_UNLOCK_VOLUME As Long = &H9001C ~R{8.!: >
Private Const FSCTL_DISMOUNT_VOLUME As Long = &H90020 tDU}rI8?
Private Const FSCTL_GET_VOLUME_BITMAP = &H9006F )G4rJ~#@
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'//type Bbs5f@E
Private Type LARGE_INTEGER ]Wy.R6
lowpart As Long +:y&{
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highpart As Long (txt8q
End Type Ps 7_-cH
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Private Enum MEDIA_TYPE ^^
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Unknown X X&K=<,Ja
F5_1Pt2_512 `5<1EGJsD
F3_1Pt44_512 acP
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F3_2Pt88_512 R.UumBM
F3_20Pt8_512 #Gp
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F3_720_512 eE,;K1
F5_360_512 M8Juykw
F5_320_512 LJ
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F5_320_1024 ?'f^X$aS
F5_180_512 CK Mv7
F5_160_512 /h-6CR
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RemovableMedia pVz pN8!
FixedMedia U IQ 6SvM
End Enum 54wM8'+
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Private Type DISK_GEOMETRY )"-fHW+fy
Cylinders As LARGE_INTEGER FpC~1Nau
MediaType As MEDIA_TYPE +{Gw9h"5g*
TracksPerCylinder As Long .$^wy3:F"
SectorsPerTrack As Long {9'hOi50
BytesPerSector As Long =g[H]-Ee
End Type ?w8pLE~E
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'//private vars -3`Isv
Private hDisk As Long 'disk handle 44<v9uSK
Private lpGeometry As DISK_GEOMETRY 'disk info (n}%a6M
Private lBufferSize As Long 'the buffer size of read/write X}?ESjZJ
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Public Function OpenDisk(ByVal FileName As String) As Boolean @
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'// 打开磁盘 {DS\!0T-X
hDisk = CreateFile(FileName, _ xcnt?%%M
GENERIC_READ Or GENERIC_WRITE, _ voH4
FILE_SHARE_READ Or FILE_SHARE_WRITE, _
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OPEN_EXISTING, _ b_l.QKk
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OpenDisk = Not (hDisk = INVALID_HANDLE_VALUE) *G9
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End Function .f+9 A>
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Public Function CloseDisk() As Boolean Hp*gv/0
'//关闭磁盘 FSVS4mtiX\
CloseDisk = CloseHandle(hDisk) x57'Cg \
End Function @[0jFjK
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Public Function GetDiskGeometry() As Boolean <]c#)xg
'//获取磁盘参数 F*X%N_n
Dim dwOutBytes As Long L-MiaKc L
Dim bResult As Boolean ?.~]mvOR
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bResult = DeviceIoControl(hDisk, _ # a.\P.{L
IOCTL_DISK_GET_DRIVE_GEOMETRY, _ oX#9RW/ >I
ByVal 0&, 0, _ UXQb={
lpGeometry, Len(lpGeometry), _ 9yDFHz w
dwOutBytes, _ F;X"3F.!
ByVal 0&) Jtpa@!M
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If bResult Then lBufferSize = lpGeometry.BytesPerSector * lpGeometry.SectorsPerTrack 0tSA|->(
GetDiskGeometry = bResult Kj=;>u
End Function H}(=?}
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Public Sub GetDiskInfo(MediaType As Long, _ pB[%:w/@l:
Cylinders As Long, _ (Q\\Gw
TracksPerCylinder As Long, _ b_ypsGE]5!
SectorsPerTrack As Long, _ -t%L#1k
BytesPerSector As Long) rEg+i@~
'//返回磁盘的参数 )I?RMR
MediaType = lpGeometry.MediaType `M,Nd'5&|
Cylinders = lpGeometry.Cylinders.lowpart 8 `o{b"l+
TracksPerCylinder = lpGeometry.TracksPerCylinder $xQ"PJ2
SectorsPerTrack = lpGeometry.SectorsPerTrack V!H(;Tuuo
BytesPerSector = lpGeometry.BytesPerSector GU5W|bS
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End Sub O<bDU0s{M
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Public Property Get BufferSize() As Long G1p43
'//返回每次读/写的缓冲大小 n~9 i^
BufferSize = lBufferSize E+:.IuXW$
End Property U~Xf= f_Q$
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Public Function LockVolume() As Boolean )< l\jfx e
'// 将卷锁定 ,v|CombIc.
Dim dwOutBytes As Long ~DK F%}E
Dim bResult As Boolean FSFFk~
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bResult = DeviceIoControl(hDisk, _ l~
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FSCTL_LOCK_VOLUME, _ $e>/?Ss
ByVal 0&, 0, _ k RQ~hRT6
ByVal 0&, 0, _ 4@ =
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dwOutBytes, _ hzW{_Q.|?
ByVal 0&) ~.iA`${y%
LockVolume = bResult ws.?cCTpt
End Function #!wsD7;
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Public Function UnlockVolume() As Boolean zLo;.X[Y
'// 将卷解锁 +tPx0>p;
Dim dwOutBytes As Long FBYll[
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Dim bResult As Boolean |x*{fXdMhr
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bResult = DeviceIoControl(hDisk, _ dEL3?-;'
FSCTL_UNLOCK_VOLUME, _ TS/C
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ByVal 0&, 0, _ $R8
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ByVal 0&, 0, _ 3.B4(9:>,
dwOutBytes, _ C+T&O
ByVal 0&) R&]c"cO L8
UnlockVolume = bResult (/('n
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End Function $+
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Public Function DismountVolume() As Boolean S_ZLTcq<1
'// 将卷卸下,使系统重新辨识磁盘,等效于重新插盘 (y%%6#bd
Dim dwOutBytes As Long zUNH8=U
Dim bResult As Boolean ip<15
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bResult = DeviceIoControl(hDisk, _ Q %+}
FSCTL_DISMOUNT_VOLUME, _ =rtS#u
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ByVal 0&, 0, _ 7&=-a|k~
ByVal 0&, 0, _ H\ {E%7^h-
dwOutBytes, _ / *AJ+K._
ByVal 0&) ;5-R=e(KA
DismountVolume = bResult lt&$8jh
End Function -3u@hp_
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Public Function ReadDisk(ByVal Cylinders As Long, _ Gg'<Q.
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ByVal Tracks As Long, _ 2%`^(\y
db() As Byte) As Boolean .MzOLv
'//按柱面和磁道来读取磁盘数据 mu 2
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Dim iPos As Long Sb'N];
Dim lRead As Long #,7eQaica
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iPos = Cylinders * Tracks * lBufferSize G`9cd\^
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If SeekAbsolute(0, iPos) Then B{[f}h.n
ReadDisk = ReadBytes(lBufferSize, db(), lRead) +SAk:3.#CV
End If >0kmRVd
End Function :U!'U;uQ
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Public Function WriteDisk(ByVal Cylinders As Long, _ xX[?L9RGz
ByVal Tracks As Long, _ (zj
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db() As Byte) As Boolean
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'//按柱面和磁道来写磁盘数据 1 ,#{X3
Dim iPos As Long s*aH`M7^0
Dim lRead As Long "xL;(Fqu
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iPos = Cylinders * Tracks * lBufferSize '2wXV;`
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If SeekAbsolute(0, iPos) Then y;zt_O/
WriteDisk = WriteBytes(lBufferSize, db()) sM#!Xl;
End If @47[vhE
End Function w906aV*s
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'///////////////////////////////////////////////////////////////////////////////////// /#:Rd^
'//file system j2< !z;2
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Private Function SeekAbsolute(ByVal HighPos As Long, ByVal LowPos As Long) As Boolean Y')O>C0~
'//seek file ^fFtI?.6jI
'//Notice: when you set LowPos=5, the read/write will begin with the 6th(LowPos+1) byte zJz82jMm
LowPos = SetFilePointer(hDisk, LowPos, HighPos, FILE_BEGIN) C}n[?R
If LowPos = -1 Then |\i:LG1
SeekAbsolute = (Err.LastDllError = ERROR_SUCCESS) YgO aZq
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Else TS\9<L9S
SeekAbsolute = True -iY9GN89c
End If (~q#\
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End Function - 3C* P
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Private Function ReadBytes(ByVal ByteCount As Long, ByRef DataBytes() As Byte, ByRef ActuallyReadByte As Long) As Boolean LvSP #$f
'//read data to array ?BW
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Dim RetVal As Long 0@II&
RetVal = ReadFile(hDisk, DataBytes(0), ByteCount, ActuallyReadByte, 0) <$RS*n
'ActuallyReadByte =>> if the bytesRead=0 mean EOF L2[Ei|9_
ReadBytes = Not (RetVal = 0) Uuwq7oFub
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End Function N$N;Sw
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Private Function WriteBytes(ByVal ByteCount As Long, ByRef DataBytes() As Byte) As Boolean NvQY7C
'//write data from array -}=@
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Dim RetVal As Long ,k4z;
Dim BytesToWrite As Long pe\Txg6
Dim BytesWritten As Long )?!vJb"
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RetVal = WriteFile(hDisk, DataBytes(0), ByteCount, BytesWritten, 0) +io;K]C
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WriteBytes = Not (RetVal = 0) 7JxE|G
End Function V}vl
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