'VB 6.0 版 2|&SG3e+(I
'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。 @}s EP&$
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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 Q\}Ck+d`a
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long /CUBs!
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 7gx?LI_e
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 &(m01
Private Declare Function SetFilePointer Lib "kernel32" (ByVal hFile As Long, ByVal lDistanceToMove As Long, lpDistanceToMoveHigh As Long, ByVal dwMoveMethod As Long) As Long [{:
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Private Const GENERIC_READ = &H80000000 HP\5gLVXY
Private Const GENERIC_WRITE = &H40000000 Ph)>;jU
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Private Const FILE_SHARE_READ = &H1 1--Ka& H
Private Const FILE_SHARE_WRITE = &H2 e>P>DmlW
Private Const OPEN_EXISTING = 3 >qPP_^]
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Private Const INVALID_HANDLE_VALUE = -1 03.\!rZZ
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'//file seek
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Private Const FILE_BEGIN = 0 x.sC015Id
Private Const FILE_CURRENT = 1 j_h0hm]
Private Const FILE_END = 2 OlgM7Vrl
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Private Const ERROR_SUCCESS = 0& 0Bk-)z|V
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'//device io control 7nsovWp
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 i.^:xZ
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Private Const IOCTL_DISK_GET_DRIVE_GEOMETRY As Long = &H70000 '458752 ZSr!L@S
Private Const IOCTL_STORAGE_GET_MEDIA_TYPES_EX As Long = &H2D0C04 EMDYeXpV
Private Const IOCTL_DISK_FORMAT_TRACKS As Long = &H7C018 ,b:~Vpb1I
Private Const FSCTL_LOCK_VOLUME As Long = &H90018 W\<HUd
Private Const FSCTL_UNLOCK_VOLUME As Long = &H9001C p(fMM :
Private Const FSCTL_DISMOUNT_VOLUME As Long = &H90020 {w@9\LsU
Private Const FSCTL_GET_VOLUME_BITMAP = &H9006F )iJv?Y\]
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'//type 9ji`.&#
Private Type LARGE_INTEGER av_ +M;G
lowpart As Long
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highpart As Long MY
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End Type {gxP_>
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Private Enum MEDIA_TYPE >I',%v\?@
Unknown /t*Q"0X5
F5_1Pt2_512 F,V|In
F3_1Pt44_512 =&<d4'(Qk
F3_2Pt88_512 ]0g p.R
F3_20Pt8_512 L#%)@
F3_720_512 Ko)f:=Qo
F5_360_512 ^9><qKbO
F5_320_512 n(i/jW~0w
F5_320_1024 s~ou$!|
F5_180_512 13 %:3W(
F5_160_512
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RemovableMedia .@ZrmO
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FixedMedia pK ^$^*#
End Enum hZw8*H^tP
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Private Type DISK_GEOMETRY RRQIlI<
Cylinders As LARGE_INTEGER 4K 8 (H9(
MediaType As MEDIA_TYPE n}-
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TracksPerCylinder As Long yMC6 Gvp
SectorsPerTrack As Long V9D q<y-y
BytesPerSector As Long C;%dZ
End Type qC5IV}9`
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'//private vars zFQm3 !.
Private hDisk As Long 'disk handle TM|PwY
Private lpGeometry As DISK_GEOMETRY 'disk info #. 71O#!
Private lBufferSize As Long 'the buffer size of read/write lPrAx0m13%
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Public Function OpenDisk(ByVal FileName As String) As Boolean /}
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'// 打开磁盘 5tk7H2K^<
hDisk = CreateFile(FileName, _ qlnA7cK!
GENERIC_READ Or GENERIC_WRITE, _ <8YvsJ
FILE_SHARE_READ Or FILE_SHARE_WRITE, _ $/ $Hi U`.
ByVal 0&, _ h
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OPEN_EXISTING, _ wk{]eD%
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OpenDisk = Not (hDisk = INVALID_HANDLE_VALUE) { `xC~B h
End Function y0p\Gu;3j
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Public Function CloseDisk() As Boolean )[u'LgVN/L
'//关闭磁盘
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CloseDisk = CloseHandle(hDisk) FlUO3rc|
End Function `Y^l.%AZZ
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Public Function GetDiskGeometry() As Boolean +(W7hK4ip
'//获取磁盘参数 dn:\V?9
Dim dwOutBytes As Long 0g~Cd
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Dim bResult As Boolean c|Z6p{)V
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bResult = DeviceIoControl(hDisk, _ MTq/
IOCTL_DISK_GET_DRIVE_GEOMETRY, _ 'ka$@,s :
ByVal 0&, 0, _ x0K#-
lpGeometry, Len(lpGeometry), _ l%p,m[
dwOutBytes, _ g1:%986jv
ByVal 0&) Q#*R({)GH
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If bResult Then lBufferSize = lpGeometry.BytesPerSector * lpGeometry.SectorsPerTrack G_zK .N
GetDiskGeometry = bResult RS#C4NG
End Function i|xz
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Public Sub GetDiskInfo(MediaType As Long, _ bnPhhsR
Cylinders As Long, _ nwzyL`kF
TracksPerCylinder As Long, _ ,gM:s}l!dJ
SectorsPerTrack As Long, _ Vol}wc
BytesPerSector As Long) Cs\jPh;"
'//返回磁盘的参数 ,6o tm
MediaType = lpGeometry.MediaType Z$B%V
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Cylinders = lpGeometry.Cylinders.lowpart
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TracksPerCylinder = lpGeometry.TracksPerCylinder PIdGis5G
SectorsPerTrack = lpGeometry.SectorsPerTrack :G]t=vr1
BytesPerSector = lpGeometry.BytesPerSector !Rgj'{
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End Sub Pa?{}A
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Public Property Get BufferSize() As Long -%Rbd0gVH\
'//返回每次读/写的缓冲大小 IVa6?f6H_
BufferSize = lBufferSize 9p1@Lfbj
End Property
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Public Function LockVolume() As Boolean
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'// 将卷锁定 LFr$h`_D5
Dim dwOutBytes As Long %;|dEY
Dim bResult As Boolean '=eVem=
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bResult = DeviceIoControl(hDisk, _ AX{7].)F
FSCTL_LOCK_VOLUME, _ REh\WgV!u
ByVal 0&, 0, _ <@lj\,
ByVal 0&, 0, _ &0H_W xKeB
dwOutBytes, _ VF b
ByVal 0&) H/.UDz
LockVolume = bResult Wyow MFp
End Function U3{4GmrT
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Public Function UnlockVolume() As Boolean [=tIgMmz
'// 将卷解锁 3}fhU{-c
Dim dwOutBytes As Long *xITMi
Dim bResult As Boolean \Lg4 Cx
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bResult = DeviceIoControl(hDisk, _ WJ LqH<
FSCTL_UNLOCK_VOLUME, _ mIPDF1=)
ByVal 0&, 0, _ {wgq>cb
ByVal 0&, 0, _ 9XhH*tBn7(
dwOutBytes, _ RKM5FXX
ByVal 0&) jQ7-M4qO/
UnlockVolume = bResult &pR 8sySu
End Function a5/Dz&>j6
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Public Function DismountVolume() As Boolean >>"@0tO
'// 将卷卸下,使系统重新辨识磁盘,等效于重新插盘 tR2%oT>h
Dim dwOutBytes As Long #sk~L21A
Dim bResult As Boolean lL
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bResult = DeviceIoControl(hDisk, _ Do5.
FSCTL_DISMOUNT_VOLUME, _ n,LM"N:
ByVal 0&, 0, _ 0c8_&
ByVal 0&, 0, _ `M(st%@n
dwOutBytes, _ ?RW1%+[
ByVal 0&) xE$lx:C"FU
DismountVolume = bResult h%NM%;"H/
End Function 1 o_6WU
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Public Function ReadDisk(ByVal Cylinders As Long, _ ~B?Wg!
ByVal Tracks As Long, _ Koj9]2<0
db() As Byte) As Boolean MmePhHf
'//按柱面和磁道来读取磁盘数据 <M}O&?N
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Dim iPos As Long K4+|K:e
Dim lRead As Long n)z:C{
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iPos = Cylinders * Tracks * lBufferSize q*C-DiV
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If SeekAbsolute(0, iPos) Then `%EcQ}Nr
ReadDisk = ReadBytes(lBufferSize, db(), lRead) E@#<p-@~
End If 4i5b.bU$
End Function 5uOz #hN
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Public Function WriteDisk(ByVal Cylinders As Long, _ 0\s&;@xKk
ByVal Tracks As Long, _ 4sW~7:vU
db() As Byte) As Boolean -M_>]ubG
'//按柱面和磁道来写磁盘数据 bI_MF/r''
Dim iPos As Long x9S9%JG :
Dim lRead As Long s:(z;cj/
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iPos = Cylinders * Tracks * lBufferSize @A<~bod
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If SeekAbsolute(0, iPos) Then ^dsj1#3z
WriteDisk = WriteBytes(lBufferSize, db()) (ss,x CF
End If EJQT\c
End Function Bu+?N%CBi
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'///////////////////////////////////////////////////////////////////////////////////// LGVy4D
'//file system }qWB=,8HQ
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Private Function SeekAbsolute(ByVal HighPos As Long, ByVal LowPos As Long) As Boolean y$_]}<b
'//seek file Mn<s9ITS-
'//Notice: when you set LowPos=5, the read/write will begin with the 6th(LowPos+1) byte 8?x:PkK
LowPos = SetFilePointer(hDisk, LowPos, HighPos, FILE_BEGIN) }TAG7U*
If LowPos = -1 Then ?Zk;NL9
SeekAbsolute = (Err.LastDllError = ERROR_SUCCESS) tmM; Z(9t
Else $<Y%4LI
SeekAbsolute = True Li$2 Gpc/
End If 3-)}.8F
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End Function e&Q
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Private Function ReadBytes(ByVal ByteCount As Long, ByRef DataBytes() As Byte, ByRef ActuallyReadByte As Long) As Boolean #6l(2d
'//read data to array m~fDDQs
Dim RetVal As Long JNJ6HyCU
RetVal = ReadFile(hDisk, DataBytes(0), ByteCount, ActuallyReadByte, 0) M%W#0
'ActuallyReadByte =>> if the bytesRead=0 mean EOF 0
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ReadBytes = Not (RetVal = 0) wO`G_!W9
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End Function &
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Private Function WriteBytes(ByVal ByteCount As Long, ByRef DataBytes() As Byte) As Boolean n}fV$qu
'//write data from array x5Fo?E
Dim RetVal As Long i}i>ho-8
Dim BytesToWrite As Long kHhku!CH
Dim BytesWritten As Long <[K)PI
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RetVal = WriteFile(hDisk, DataBytes(0), ByteCount, BytesWritten, 0) e@ $
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WriteBytes = Not (RetVal = 0) c&{= aIe w
End Function N
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