//Convert primary GPT to backupGPT
public void ToggleMirror()
{
UInt64 backup;
backup = gptHeader.currentLba;
gptHeader.currentLba = gptHeader.backupLba;
gptHeader.backupLba = backup;
if (gptHeader.entriesStart == 2)
{
gptHeader.entriesStart = gptHeader.currentLba - 32;
}
else
{
gptHeader.entriesStart = 2;
}
gptHeader.UpdateCRC32(CRC.CRC32(gptPartitionTable.ToByteArray()));
}
//Create GPT for BFS
public GPT(UInt64 totalSectors, UInt32 bytesPerSector)
{
pmbr = new MBR(totalSectors > UInt32.MaxValue ? UInt32.MaxValue : (UInt32)totalSectors, bytesPerSector, true);
gptHeader = new GPTHeader((UInt32)totalSectors, bytesPerSector);
reserved = new byte[420];
gptPartitionTable = new GPTPartitionTable();
reserved2 = new byte[3072];
//create partition entry
gptPartitionTable.partitions = new GPTPartition[152];
gptPartitionTable.partitions[0].BFSParitionType = new Guid("53525542-4354-494F-4E46-494C45535953");
gptPartitionTable.partitions[0].partitionGuid = Guid.NewGuid();
gptPartitionTable.partitions[0].startPos = 40;
gptPartitionTable.partitions[0].endPos = (5 + 2 + ((((UInt64)totalSectors * bytesPerSector / 4096) - 12) / 64 / 64) * 64 * 64) * (4096 / bytesPerSector);
gptPartitionTable.partitions[0].attributes = 0;
//gptEntries[0].partitionName = //Optional Name :-)
//Update CRCs
gptHeader.UpdateCRC32(CRC.CRC32(gptPartitionTable.ToByteArray()));
}
public void UpdateCRC32(UInt32 partitionTablecCRC32)
{
crc32Array = partitionTablecCRC32;
crc32Header = 0;
crc32Header = CRC.CRC32(ToByteArray());
}
