public void CreateBySizeInGap()
{
SparseMemoryStream ms = new SparseMemoryStream();
Geometry geom = new Geometry(15, 30, 63);
ms.SetLength(geom.Capacity);
BiosPartitionTable table = BiosPartitionTable.Initialize(ms, geom);
Assert.AreEqual(0, table.CreatePrimaryByCylinder(0, 4, 33, false));
Assert.AreEqual(1, table.CreatePrimaryByCylinder(10, 14, 33, false));
table.Create(geom.ToLogicalBlockAddress(new ChsAddress(4, 0, 1)) * 512, WellKnownPartitionType.WindowsFat, true);
}
public void CreateByCylinder()
{
SparseMemoryStream ms = new SparseMemoryStream();
Geometry geom = new Geometry(15, 30, 63);
ms.SetLength(geom.Capacity);
BiosPartitionTable table = BiosPartitionTable.Initialize(ms, geom);
Assert.AreEqual(0, table.CreatePrimaryByCylinder(0, 4, 33, false));
Assert.AreEqual(1, table.CreatePrimaryByCylinder(10, 14, 33, false));
Assert.AreEqual(geom.ToLogicalBlockAddress(new ChsAddress(0, 1, 1)), table[0].FirstSector);
Assert.AreEqual(geom.ToLogicalBlockAddress(new ChsAddress(5, 0, 1)) - 1, table[0].LastSector);
Assert.AreEqual(geom.ToLogicalBlockAddress(new ChsAddress(10, 0, 1)), table[1].FirstSector);
Assert.AreEqual(geom.ToLogicalBlockAddress(new ChsAddress(14, 29, 63)), table[1].LastSector);
}
public void CreateBySizeInGapAligned()
{
SparseMemoryStream ms = new SparseMemoryStream();
Geometry geom = new Geometry(15, 30, 63);
ms.SetLength(geom.Capacity);
BiosPartitionTable table = BiosPartitionTable.Initialize(ms, geom);
Assert.AreEqual(0, table.CreatePrimaryByCylinder(0, 4, 33, false));
Assert.AreEqual(1, table.CreatePrimaryByCylinder(10, 14, 33, false));
int idx = table.CreateAligned(3 * 1024 * 1024, WellKnownPartitionType.WindowsFat, true, 64 * 1024);
Assert.AreEqual(2, idx);
Assert.AreEqual(0, table[idx].FirstSector % 128);
Assert.AreEqual(0, (table[idx].LastSector + 1) % 128);
}
/// <summary>
/// Creates a new partition table on a disk.
/// </summary>
/// <param name="disk">The stream containing the disk data.</param>
/// <param name="diskGeometry">The geometry of the disk.</param>
/// <returns>An object to access the newly created partition table.</returns>
public static GuidPartitionTable Initialize(Stream disk, Geometry diskGeometry)
{
// Create the protective MBR partition record.
BiosPartitionTable pt = BiosPartitionTable.Initialize(disk, diskGeometry);
pt.CreatePrimaryByCylinder(0, diskGeometry.Cylinders - 1, BiosPartitionTypes.GptProtective, false);
// Create the GPT headers, and blank-out the entry areas
const int EntryCount = 128;
const int EntrySize = 128;
int entrySectors = (EntryCount * EntrySize + diskGeometry.BytesPerSector - 1) / diskGeometry.BytesPerSector;
byte[] entriesBuffer = new byte[EntryCount * EntrySize];
// Prepare primary header
GptHeader header = new GptHeader(diskGeometry.BytesPerSector);
header.HeaderLba = 1;
header.AlternateHeaderLba = disk.Length / diskGeometry.BytesPerSector - 1;
header.FirstUsable = header.HeaderLba + entrySectors + 1;
header.LastUsable = header.AlternateHeaderLba - entrySectors - 1;
header.DiskGuid = Guid.NewGuid();
header.PartitionEntriesLba = 2;
header.PartitionEntryCount = EntryCount;
header.PartitionEntrySize = EntrySize;
header.EntriesCrc = CalcEntriesCrc(entriesBuffer);
// Write the primary header
byte[] headerBuffer = new byte[diskGeometry.BytesPerSector];
header.WriteTo(headerBuffer, 0);
disk.Position = header.HeaderLba * diskGeometry.BytesPerSector;
disk.Write(headerBuffer, 0, headerBuffer.Length);
// Write the primary partition table
disk.Position = header.PartitionEntriesLba * diskGeometry.BytesPerSector;
disk.Write(entriesBuffer, 0, entriesBuffer.Length);
// Calc alternate header
header.HeaderLba = header.AlternateHeaderLba;
header.AlternateHeaderLba = 1;
header.PartitionEntriesLba = header.HeaderLba - entrySectors;
// Write the alternate header
header.WriteTo(headerBuffer, 0);
disk.Position = header.HeaderLba * diskGeometry.BytesPerSector;
disk.Write(headerBuffer, 0, headerBuffer.Length);
// Write the alternate partition table
disk.Position = header.PartitionEntriesLba * diskGeometry.BytesPerSector;
disk.Write(entriesBuffer, 0, entriesBuffer.Length);
return(new GuidPartitionTable(disk, diskGeometry));
}
public void VeryLargePartition()
{
long capacity = 1300 * 1024L * 1024L * 1024;
SparseMemoryStream ms = new SparseMemoryStream();
ms.SetLength(capacity);
Geometry geom = Geometry.LbaAssistedBiosGeometry(capacity);
BiosPartitionTable table = BiosPartitionTable.Initialize(ms, geom);
// exception occurs here
int i = table.CreatePrimaryByCylinder(0, 150000, (byte)WellKnownPartitionType.WindowsNtfs, true);
Assert.AreEqual(150000, geom.ToChsAddress(table[0].LastSector).Cylinder);
}
