public static byte[] GetBytes(string devicePath)
{
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
if (mbr.PartitionTable[0].SystemID == "EFI_GPT_DISK")
{
IntPtr hDevice = Win32.NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
return(Win32.NativeMethods.readDrive(streamToRead, GPT_OFFSET, SECTOR_SIZE));
}
}
else
{
throw new Exception("No GPT found. Please use Get-MBR cmdlet");
}
}
public GuidPartitionTable(string devicePath)
{
MasterBootRecord mbr = MasterBootRecord.Get(devicePath);
if (mbr.PartitionTable[0].SystemID == "EFI_GPT_DISK")
{
IntPtr hDevice = NativeMethods.getHandle(devicePath);
using (FileStream streamToRead = NativeMethods.getFileStream(hDevice))
{
// Get Header
GuidPartitionTableHeader GPTHeader = new GuidPartitionTableHeader(NativeMethods.readDrive(streamToRead, GPT_OFFSET, SECTOR_SIZE));
Revision = GPTHeader.Revision;
HeaderSize = GPTHeader.HeaderSize;
MyLBA = GPTHeader.MyLBA;
AlternateLBA = GPTHeader.AlternateLBA;
FirstUsableLBA = GPTHeader.FirstUsableLBA;
LastUsableLBA = GPTHeader.LastUsableLBA;
DiskGUID = GPTHeader.DiskGUID;
PartitionEntryLBA = GPTHeader.PartitionEntryLBA;
NumberOfPartitionEntries = GPTHeader.NumberOfPartitionEntries;
SizeOfPartitionEntry = GPTHeader.SizeOfPartitionEntry;
// Get PartitionTable
List <GuidPartitionTableEntry> partitionList = new List <GuidPartitionTableEntry>();
bool Continue = true;
// Iterate through sectors that contain the GPT Entry Array
for (ulong j = GPTHeader.PartitionEntryLBA; (j < GPTHeader.PartitionEntryLBA + (GPTHeader.NumberOfPartitionEntries / (SECTOR_SIZE / GPTHeader.SizeOfPartitionEntry))); j++)
{
// Read one sector
byte[] partitionSectorBytes = NativeMethods.readDrive(streamToRead, (SECTOR_SIZE * j), SECTOR_SIZE);
// Iterate through Partition Entries in Sector
// Sectors (512 bytes) / Partitions (128 bytes) = 4 partitions per sector
for (uint i = 0; i < 512; i += GPTHeader.SizeOfPartitionEntry)
{
// Instantiate a GuidPartitionTableEntry object
GuidPartitionTableEntry entry = new GuidPartitionTableEntry(NativeMethods.GetSubArray(partitionSectorBytes, i, GPTHeader.SizeOfPartitionEntry));
// If entry's PartitionTypeGUID is 00000000-0000-0000-0000-000000000000 then it is not a partition
if (entry.PartitionTypeGUID == new Guid("00000000-0000-0000-0000-000000000000"))
{
Continue = false;
break;
}
partitionList.Add(entry);
}
if (!Continue)
{
break;
}
}
PartitionTable = partitionList.ToArray();
}
}
else
{
throw new Exception("No GPT found. Please use Get-MBR cmdlet");
}
}
public static MasterBootRecord Get(string drivePath)
{
// Read Master Boot Record (first 512 bytes) from disk
return(new MasterBootRecord(MasterBootRecord.GetBytes(drivePath)));
}