Understanding Vista's ReadyBoost

I guess many heard of Vista's ReadyBoost feature, if you haven't I suggest you check out Wikipedia's entry. Yup I don't want to go into the pros and cons of it. For now, I would just like to share Windows Vista's registry on ReadyBoost which I had found here.

In summary, ReadyBoost user can tweak the registry via HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows NT>CurrentVersion>EMDMgmt

(copied) 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:

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: always remember that a reboot is needed for any changes to take effect.