107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
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#include "precomp.h"
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#pragma hdrstop
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BOOL
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DmfFormatTracks(
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HANDLE hDevice,
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DWORD *pdwGLE
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)
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/*++
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Routine Description:
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Function to format the tracks for a 3.5" HD floppy using the DMF
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format (1.8MB). This function DOES NOT lay down the boot sector.
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Arguments:
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hDevice - supplies the handle of the floppy that has been opened for
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exclusive DASD access.
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pdwGLE - receives the error code returned by GetLastError() if a
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problem is encountered.
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Return Value:
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FALSE if an error occurred while formatting the floppy. If so, dwGLE
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will contain the error code.
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TRUE otherwise.
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--*/
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{
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#define FORMAT_PARAMETERS_SIZE (sizeof(FORMAT_EX_PARAMETERS) + 20*sizeof(USHORT))
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CHAR formatParametersBuffer[FORMAT_PARAMETERS_SIZE];
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PFORMAT_EX_PARAMETERS formatParameters;
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ULONG i, next;
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BOOL b;
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DWORD bytesWritten;
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USHORT swapBuffer[3];
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// Prepare the format parameters.
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formatParameters = (PFORMAT_EX_PARAMETERS) formatParametersBuffer;
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formatParameters->MediaType = F3_1Pt44_512;
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formatParameters->FormatGapLength = 8;
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formatParameters->SectorsPerTrack = 21;
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next = 0;
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for (i = 0; i < formatParameters->SectorsPerTrack; i += 2) {
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formatParameters->SectorNumber[i] = (USHORT) (i/2 + 1);
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next++;
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}
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for (i = 1; i < formatParameters->SectorsPerTrack; i += 2) {
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formatParameters->SectorNumber[i] = (USHORT) (i/2 + next + 1);
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}
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// Start off by putting the boot sector as the last sector of
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// the first track.
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MoveMemory(&formatParameters->SectorNumber[0],
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&formatParameters->SectorNumber[1],
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20*sizeof(USHORT));
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formatParameters->SectorNumber[20] = 1;
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// Format each track on the floppy.
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for (i = 0; i < 80; i++) {
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formatParameters->StartCylinderNumber =
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formatParameters->EndCylinderNumber = i;
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formatParameters->StartHeadNumber = 0;
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formatParameters->EndHeadNumber = 1;
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// printf("Formatting track %d\r", i);
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b = DeviceIoControl(hDevice, IOCTL_DISK_FORMAT_TRACKS_EX,
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formatParameters, FORMAT_PARAMETERS_SIZE,
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NULL, 0, &bytesWritten, NULL);
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if (!b) {
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*pdwGLE = GetLastError();
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return FALSE;
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}
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// Skew the next cylinder by 3 sectors from this one.
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MoveMemory(swapBuffer,
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&formatParameters->SectorNumber[18],
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3*sizeof(USHORT));
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MoveMemory(&formatParameters->SectorNumber[3],
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&formatParameters->SectorNumber[0],
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18*sizeof(USHORT));
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MoveMemory(&formatParameters->SectorNumber[0],
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swapBuffer,
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3*sizeof(USHORT));
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}
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return TRUE;
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}
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