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Last active August 31, 2025 14:38
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registry
__Safe sollten sein: 0 und 1__
# HMB on/off can be done in windows registry on this key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorPort
DWORD - HMBAllocationPolicy (values: 0 = off,1 = 8MB buffer,2= 64MB buffer, 3 = firmware controled buffer size)
(per https://forums.tomshardware.com/threads/host-buffer-memory-hbm.3793910/)
neuere Windows bis 1GB je nach RAM Ausbau
autotuning hier erklaert https://community.wd.com/t/windows-24h2-wd-blue-screens/297867/144
Auf 2 setzen ist schneller, aber kann das problem immernoch treffen, dann muss man auf 64MB limittieren
Erklaerung wie setzen, geht nur mit Modell / Vendor
https://community.wd.com/t/windows-24h2-wd-blue-screens/297867/41
Dort dann limitieren mittels
HostMemoryBufferBytes = 67108864
Auf 3 setzen ist nur safe, wenn alles OK ist, kann man aktuell nicht annehmen
# ungeklaert
# "AHCI Link Power Management"
HKLM\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\0012ee47-9041-4b5d-9b77-535fba8b1442\0b2d69d7-a2a1-449c-9680-f91c70521c60 = X
HKLM\SYSTEM\CurrentControlSet\Control\Power\PowerSettings\0012ee47-9041-4b5d-9b77-535fba8b1442\dab60367-53fe-4fbc-825e-521d069d2456 = 2
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci StartOverride = 3
TimeOutValue = 5 (==flush intervall oder warum wurde das gesezt?)
@FlorianHeigl
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FlorianHeigl commented Aug 31, 2025 •
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beispiele fuer wmi filter

select model, manufacturer from Win32_ComputerSystem where model="VMware Virtual Platform" and manufacturer="VMware, Inc."

WMIC.EXE DiskDrive Where "PnpDeviceId LIKE '%VEN_NVME%'" Get PnpDeviceId | FIND.EXE /I "VEN_NVME"
IF %ERRORLEVEL% EQU 1 ECHO No NVME drive found

cmd: wmic diskdrive get caption | findstr /I "nvme"

@FlorianHeigl
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select * from Win32_OperatingSystem where Version like "10.0.26100%" and ProductType="1"

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