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American V
Flippin, AR

Slow boot time on your SSD?

Click for full size
Registry Disabled LPM
After a BIOS update, and assorted Windows updates, I noticed my normally quick booting Mushkin SSD took an extraordinarily long time to boot. After it did boot, it seemed to run fine. Still loaded programs as fast as always, but I missed my blazin' fast boot up!!

I almost was at the point of reinstalling Windows.

I did a lot of research and tweaking before I finally came across the correct "fix" in a forum on the web.

It involves some registry additions, so if your not willing to go there then I wouldn't.

Link Power Management with Intel® Rapid Storage Technology

Intel® Rapid Storage Technology implements the Link power management (LPM) feature described by the Serial ATA specification to overcome the power demand of a high-speed serial interface, SATA and providing the capability of SATA at the minimum power cost. LPM, when used in conjunction with a SATA hard drive that supports this feature, enables lower power consumption. LPM was initially enabled by default on mobile platforms starting with ICH6M with Intel® Matrix Storage Manager. Starting with ICH9R this feature has also been supported on desktop platforms with Intel® Matrix Storage Manager 7.5 release but not enabled by default. Beginning with the Intel® Rapid Storage Technology 10.0 release, LPM support is enabled by default on both mobile and desktop platforms. OEM’s who wish to modify the default settings for LPM on their platforms can follow the instructions in the following section(s).

Instructions to disable/enable LPM

After system is setup with OS and Intel® Rapid Storage Technology installed, follow the below instructions to modify the default LPM support.

NOTE: Beginning with the Intel® Rapid Storage Technology 10.0 release, the registry keys are no longer populated in the Windows registry by default. The RST driver does not require the registry keys to be present to support the default settings.

1. Go to Start->Run
2. Type in RegEdit and hit the Enter Key.
3. Go to the below mentioned location to insert or configure the registry keys for LPM
NOTE: OEM’s need to configure the LPM settings by port. Ports are numbered starting with zero (please refer the desired platform EDS for the number of ports supported on that platform)

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\iaStor\Parame
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\iaStor\Parame

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\iaStor\Parame

4. Now add the following registry keys under the registry location mentioned in step3, if they are not available (These registry keys are not available by default, they can be added by using utomated scripts, .reg files, executable utilities, etc). If you find the below registry keys already available, you can modify the values for desired support. Values are modified on a port by port basis so modify all ports that you wish the changes to be supported on. **

“LPM”=dword: 00000001 {dword: 00000000->Disable; dword: 00000001->Enable} [default = Enabled]
“LPMSTATE”=dword: 00000000 {dword: 00000000->Partial; dword: 00000001->Slumber} [default = Disabled] (Note: the driver ignores this key when the LPM key’svalue is not set to 1. So when LPM value is 0, this value is N/A.)
“LPMDSTATE”=dword: 00000001 {dword: 00000000->Partial; dword: 00000001->Slumber} [default = Enabled]
“DIPM”=dword: 00000001 {dword: 00000000->Disable; dword: 00000001->Enable} [default = Enabled]

**Warning: If you edit the registry incorrectly, you can cause serious problems that may require you to reinstall your operating system. Intel does not guarantee that problems that are caused by editing the Registry incorrectly can be resolved.


If there are no "Ports" under the iaStorV/iaStor Parameters, you will need to Manually create the Registry Location and add the Keys:

1. Go to Start-> Run..

2. Type in RegEdit and hit the Enter Key..

3. Go to the following Key location to insert or configure the registry keys for LPM:



4a. Right click "Parameters" select "New"(Key) then name it "Port0".

4b. Left click "Port0" to open and in the pane with Name/Type/Data, Right click select "New" then "DWORD" and name the new value "LPM".

4c. Repeat 4a/4b "LPMDSTATE" and add "DIPM".

5. When you want to add the other Ports also to registry, then repeat the steps from 4a to 4c and name it Port1, Port2, Port3, Port4 and Port5.

Reboot, and your SSD should now perform as fast as it ever did, and boot quickly again.

Disclaimer: Add something wrong to the registry, and you may cause BIG problems!
If you are not confident, or comfortable editing the registry, I STRONGLY suggest you don't!