ULONGLONG SectorOffset = 0;
ULONGLONG SectorCount = 0;
PARTITION_TABLE_ENTRY PartitionTableEntry;
+ GEOMETRY Geometry;
+ EXTENDED_GEOMETRY ExtGeometry;
CHAR FileName[1];
if (!DissectArcPath(Path, FileName, &DriveNumber, &DrivePartition))
return EINVAL;
- SectorSize = (DrivePartition == 0xff ? 2048 : 512);
+
+ ExtGeometry.Size = sizeof(EXTENDED_GEOMETRY);
+ if (DiskGetExtendedDriveParameters(DriveNumber, &ExtGeometry, ExtGeometry.Size))
+ {
+ SectorSize = ExtGeometry.BytesPerSector;
+ SectorCount = ExtGeometry.Sectors;
+ }
+ else if (MachDiskGetDriveGeometry(DriveNumber, &Geometry))
+ {
+ SectorSize = Geometry.BytesPerSector;
+ SectorCount = Geometry.Sectors;
+ }
+ else
+ return EINVAL;
+
if (DrivePartition != 0xff && DrivePartition != 0)
{
if (!DiskGetPartitionEntry(DriveNumber, DrivePartition, &PartitionTableEntry))
SectorOffset = PartitionTableEntry.SectorCountBeforePartition;
SectorCount = PartitionTableEntry.PartitionSectorCount;
}
- else
- {
- SectorCount = 0; /* FIXME */
- }
Context = MmHeapAlloc(sizeof(DISKCONTEXT));
if (!Context)