S
Sly Dog
Recently, I bought a "Windows Vista Ready UPGRADE" 8GB flash drive.
Surprise, surprise - the write speed of this "Vista Ready" device is too
slow.
So, Vista refused to enable ReadyBoost for this device.
I screwed around with it all friggin' day until I found my way to and
figured out the registry's ReadyBoost G-spot!
HKEY_LOCAL_MACHINE
SOFTWARE
Microsoft
Windows NT
CurrentVersion
EMDMgmt
Here are a few important parameter values:
DeviceStatus 2=ReadyBoost ENABLED 4=ReadyBoost DISABLED
CacheSize Maximum Cache Size is 4090.
DoRetest 0=NO (box checked) 1=YES (box un-checked)
Here's the example of my hack for my defective 8GB flash drive:
CacheSizeInMB ffa (4090)
CacheStatus 1
DeviceStatus 2
DoRetestDevice 0
HasSlowRegions 0
LastTestedTime 1c74d5fcc5dca36
(128156188249279030)
PhysicalDeviceSize 1ebf (7871)
ReadSpeedKBs 12df (4831)
RecommendedCacheSizeMB ffa (4090)
USBVersion 20000 (131072)
WriteSpeedKBs daf (3503)
(*note: I deliberately modified the WriteSpeedKBs value to just in case it
made a difference - the original WriteSpeedKBs value was ~1758)
You can safely delete any and all EMDMgmt "_??" sub-keys to clear out
invalid device speed-test data.
You should restart your system after finalizing your modifications.
Comments, corrections and addendums welcome.
Surprise, surprise - the write speed of this "Vista Ready" device is too
slow.
So, Vista refused to enable ReadyBoost for this device.
I screwed around with it all friggin' day until I found my way to and
figured out the registry's ReadyBoost G-spot!
HKEY_LOCAL_MACHINE
SOFTWARE
Microsoft
Windows NT
CurrentVersion
EMDMgmt
Here are a few important parameter values:
DeviceStatus 2=ReadyBoost ENABLED 4=ReadyBoost DISABLED
CacheSize Maximum Cache Size is 4090.
DoRetest 0=NO (box checked) 1=YES (box un-checked)
Here's the example of my hack for my defective 8GB flash drive:
CacheSizeInMB ffa (4090)
CacheStatus 1
DeviceStatus 2
DoRetestDevice 0
HasSlowRegions 0
LastTestedTime 1c74d5fcc5dca36
(128156188249279030)
PhysicalDeviceSize 1ebf (7871)
ReadSpeedKBs 12df (4831)
RecommendedCacheSizeMB ffa (4090)
USBVersion 20000 (131072)
WriteSpeedKBs daf (3503)
(*note: I deliberately modified the WriteSpeedKBs value to just in case it
made a difference - the original WriteSpeedKBs value was ~1758)
You can safely delete any and all EMDMgmt "_??" sub-keys to clear out
invalid device speed-test data.
You should restart your system after finalizing your modifications.
Comments, corrections and addendums welcome.