public GptHardDrive(HardDisk hdd)
{
//check for MBR protective partition
if (!MbrHardDisk.IsMbr(hdd))
{
throw new Exception("Not MBR.");
}
if (MbrHardDisk.GetType(hdd, 0) != MbrPartitionType.GptProtective)
{
throw new Exception("Not GPT.");
}
mHeader = LoadHeader(hdd, SectorSize);
var backup = LoadHeader(hdd, hdd.Length - SectorSize);
List <PartitionEntry> parts = new List <PartitionEntry>();
for (int i = 0; i < mHeader.NumberOfPartitions; i++)
{
var partEnt = GetLba <PartitionEntry>(hdd, mHeader.StartingLbaOfPartitionEntries, i * mHeader.SizeOfPartitionEntry);
if (partEnt.Type == Guid.Empty)
{
continue;
}
parts.Add(partEnt);
}
mPartition = parts.Where(p => sZfsPartitionTypes.Contains(p.Type)).Single();
Init(hdd, SectorSize * mPartition.FirstLba, SectorSize * (mPartition.LastLba - mPartition.FirstLba));
}
public MbrHardDisk(HardDisk hdd, int partition)
{
hdd.Get(0, out mHeader);
//for now, always assume a GPT partition
if (!MbrHardDisk.IsMbr(hdd))
{
throw new Exception("Expected a MBR hdd.");
}
if (MbrHardDisk.GetType(hdd, 0) != MbrPartitionType.GptProtective)
{
throw new Exception("Expected a GPT protective MBR entry.");
}
mPartition = mHeader.GetPartition(partition);
Init(hdd, (long)mPartition.FirstSectorLba * MbrHeader.SectorSize, (long)mPartition.NumberOfSectors * MbrHeader.SectorSize);
}