The WriteIoAggregateMaxSize
setting works with
other settings in the Microsoft-Windows-SecureStartup-FilterDriver
component to optimize BitLocker settings for PCs with hardware
architectures such as System on a Chip (SoC). Do not use these
settings for standard 32-bit or 64-bit hardware architectures.
These settings are intended for OEM manufacturing only. For specific guidance on using these settings, contact Microsoft.
Values
WriteIoAggregateMaxSize
is an integer
value, in bytes.
The default value is 1048576
(1 GB) for an
eMMC OS volumes, otherwise, the default value is
0
.
Valid Configuration Passes
offlineServicing
specialize
auditSystem
oobeSystem
Parent Hierarchy
Microsoft-Windows-SecureStartup-FilterDriver | WriteIoAggregateMaxSize
Applies To
For a list of the Windows editions and architectures that this component supports, see Microsoft-Windows-SecureStartup-FilterDriver.
XML Example
The following example specifies recommended values for Bitlocker optimizations on an x86 System on a Chip.
Copy Code | |
---|---|
<component name="Microsoft-Windows-SecureStartup-FilterDriver" processorArchitecture="x86" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <BytesDecryptedInDiskRequestOverhead>262144</BytesDecryptedInDiskRequestOverhead> <InPlaceCrypto>0</InPlaceCrypto> <MaxCryptoRequestsPerIo>4</MaxCryptoRequestsPerIo> <MaxDecryptRequests>0</MaxDecryptRequests> <MaxEncryptRequests>2</MaxEncryptRequests> <ModifiedWriteMaximum>4</ModifiedWriteMaximum> <ReadDoubleBuffering>0</ReadDoubleBuffering> <SlicedEncryptionInPlace>1</SlicedEncryptionInPlace> <SlicedEncryptionMinSize>524288</SlicedEncryptionMinSize> <SlicedEncryptionRequestsMax>1</SlicedEncryptionRequestsMax> <WriteIoAggregateMaxSize>1048576</WriteIoAggregateMaxSize> <WriteIoAggregateMinSize>1048576</WriteIoAggregateMinSize> <WriteSubrequestLength>524288</WriteSubrequestLength> </component> |