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Xbox One disk partitioning script
# Copyright (c) Rafael Rivera
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
Add-Type -TypeDefinition @"
// Copyright (c) Damien Guard. All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// Originally published at http://damieng.com/blog/2006/08/08/calculating_crc32_in_c_and_net
using System;
using System.Collections.Generic;
using System.Security.Cryptography;
public sealed class Crc32 : HashAlgorithm
{
public const UInt32 DefaultPolynomial = 0xedb88320u;
public const UInt32 DefaultSeed = 0xffffffffu;
static UInt32[] defaultTable;
readonly UInt32 seed;
readonly UInt32[] table;
UInt32 hash;
public Crc32()
: this(DefaultPolynomial, DefaultSeed)
{
}
public Crc32(UInt32 polynomial, UInt32 seed)
{
table = InitializeTable(polynomial);
this.seed = hash = seed;
}
public override void Initialize()
{
hash = seed;
}
protected override void HashCore(byte[] array, int ibStart, int cbSize)
{
hash = CalculateHash(table, hash, array, ibStart, cbSize);
}
protected override byte[] HashFinal()
{
var hashBuffer = UInt32ToBigEndianBytes(~hash);
HashValue = hashBuffer;
return hashBuffer;
}
public override int HashSize { get { return 32; } }
public static UInt32 Compute(byte[] buffer)
{
return Compute(DefaultSeed, buffer);
}
public static UInt32 Compute(UInt32 seed, byte[] buffer)
{
return Compute(DefaultPolynomial, seed, buffer);
}
public static UInt32 Compute(UInt32 polynomial, UInt32 seed, byte[] buffer)
{
return ~CalculateHash(InitializeTable(polynomial), seed, buffer, 0, buffer.Length);
}
static UInt32[] InitializeTable(UInt32 polynomial)
{
if (polynomial == DefaultPolynomial && defaultTable != null)
return defaultTable;
var createTable = new UInt32[256];
for (var i = 0; i < 256; i++)
{
var entry = (UInt32)i;
for (var j = 0; j < 8; j++)
if ((entry & 1) == 1)
entry = (entry >> 1) ^ polynomial;
else
entry = entry >> 1;
createTable[i] = entry;
}
if (polynomial == DefaultPolynomial)
defaultTable = createTable;
return createTable;
}
static UInt32 CalculateHash(UInt32[] table, UInt32 seed, IList<byte> buffer, int start, int size)
{
var crc = seed;
for (var i = start; i < size - start; i++)
crc = (crc >> 8) ^ table[buffer[i] ^ crc & 0xff];
return crc;
}
static byte[] UInt32ToBigEndianBytes(UInt32 uint32)
{
var result = BitConverter.GetBytes(uint32);
if (BitConverter.IsLittleEndian)
Array.Reverse(result);
return result;
}
}
"@ -PassThru | Out-Null
function Get-Crc32
{
Param (
[Parameter(ValueFromPipeline)]
[byte[]]$buffer
)
$crc32 = New-Object Crc32
return $crc32.ComputeHash($buffer)
}
function Set-XboxPartitionAttributes()
{
Param (
[parameter(ValueFromPipeline)]
$disk
)
# Read enough sector data to cover the GPT header and partition entries
$reader = New-Object System.IO.BinaryReader([IO.File]::Open($disk.Path, "Open", "Read", "ReadWrite"))
$reader.BaseStream.Position = 0
$sectorData = $reader.ReadBytes(32768)
$reader.Close()
$reader.Dispose()
# Zero out CRCs
[Array]::Copy([byte[]]@(0) * 4, 0, $sectorData, 512 + 16, 4) # Header
[Array]::Copy([byte[]]@(0) * 4, 0, $sectorData, 512 + 88, 4) # Partition array
# Set Disk GUID
$guidBytes = ([Guid]::Parse($XboxDisk.Guid)).ToByteArray()
[Array]::Copy($guidBytes, 0, $sectorData, 512 + 56, $guidBytes.Length)
# Adjust partition attributes
for($i = 0; $i -lt $XboxDisk.Partitions.Count; $i++) {
$partition = $XboxDisk.Partitions[$i]
# Adjust partition GUID
$guidBytes = ([Guid]::Parse($partition.Guid)).ToByteArray()
[Array]::Copy($guidBytes, 0, $sectorData, 1024 + (128 * $i) + 16, $guidBytes.Length)
# Adjust partition name (36 UTF16 LE units)
$stringBytes = [Text.Encoding]::Unicode.GetBytes($partition.Name.PadRight(36, "`0"))
[Array]::Copy($stringBytes, 0, $sectorData, 1024 + (128 * $i) + 56, $stringBytes.Length)
}
# Compute partition array CRC
$partitionArrayCrc = Get-Crc32 $sectorData[1024..17407]
[array]::Reverse($partitionArrayCrc)
# Write-Host "Part. CRC: " ([BitConverter]::ToString($partitionArrayCrc))
[Array]::Copy($partitionArrayCrc, 0, $sectorData, 512 + 88, $partitionArrayCrc.Length)
$headerCrc = Get-Crc32 $sectorData[512..603]
[array]::Reverse($headerCrc)
# Write-Host "Header CRC: " ([BitConverter]::ToString($headerCrc))
[Array]::Copy($headerCrc, 0, $sectorData, 512 + 16, $headerCrc.Length)
# Write it all out to disk
$writer = New-Object System.IO.BinaryWriter([IO.File]::Open($disk.Path, "Open", "Write", "ReadWrite"))
$writer.Write($sectorData)
# Write the backup GPT header, with LBAs swapped, to the last sector too
$primaryLba = $sectorData[536..543]
$backupLba = $sectorData[544..551]
[Array]::Copy($backupLba, 0, $sectorData, 536, $primaryLba.Length)
[Array]::Copy($primaryLba, 0, $sectorData, 544, $backupLba.Length)
$writer.BaseStream.Seek($disk.Size - $disk.PhysicalSectorSize, "Begin")
$writer.Write($sectorData[512..1024], 0, 512)
$writer.Close()
$writer.Dispose()
}
$XboxDisk = @"
{
"Partitions": [
{
Name: "Temp Content",
Guid: "{b3727da5-a3ac-4b3d-9fd6-2ea54441011b}",
Size: 44023414784
},
{
Name: "User Content",
Guid: "{869bb5e0-3356-4be6-85f7-29323a675cc7}",
Size: 0
},
{
Name: "System Support",
Guid: "{c90d7a47-ccb9-4cba-8c66-0459f6b85724}",
Size: 42949672960
},
{
Name: "System Update",
Guid: "{9a056ad7-32ed-4141-aeb1-afb9bd5565dc}",
Size: 12884901888
},
{
Name: "System Update 2",
Guid: "{24b2197c-9d01-45f9-a8e1-dbbcfa161eb2}",
Size: 7516192768
}
],
Guid: "{a2344bdb-d6de-4766-9eb5-4109a12228e5}"
}
"@ | ConvertFrom-Json
# Change to match desired disk.
# There will be no data loss warnings so choose wisely.
$diskId = -42
If($diskId -lt 0)
{
Write-Error "`$diskId must be changed to match the correct disk number (see below)."
Get-Disk
return
}
$disk = Get-Disk $diskId
$disk | Clear-Disk -RemoveData -Confirm:$False
$disk | Initialize-Disk -PartitionStyle GPT -Confirm:$False
# Remove the unwanted MSR partition
$disk | Get-Partition | Remove-Partition -Confirm:$False
$XboxDisk.Partitions[1].Size = [Math]::Truncate(
$disk.LargestFreeExtent - ($XboxDisk.Partitions | Select -ExpandProperty Size | Measure-Object -Sum | Select -ExpandProperty Sum))
foreach($partition in $XboxDisk.Partitions) {
$disk | New-Partition -Size $partition.Size -AssignDriveLetter |
Format-Volume -FileSystem NTFS -NewFileSystemLabel $partition.Name -Force
}
$disk | Set-XboxPartitionAttributes
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