Comapct Flash File System

[m_jannelli]

Hello everybody!

I installed Windows Xp Embedded on a Compact Flash card. I have heard
about a compact flash file system: this is supposed to cache files
instead of reading and writing them continuously on the flash memory.
This should preserve flash memory lifetime..
Do you know where I can find and possibly download it?
Thank you much in advance.

Mario Jannelli
www.silverino.com

 

[Adora Belle Dearheart]

Hello everybody!

I installed Windows Xp Embedded on a Compact Flash card. I have heard
about a compact flash file system: this is supposed to cache files
instead of reading and writing them continuously on the flash memory.
This should preserve flash memory lifetime..
Do you know where I can find and possibly download it?
Thank you much in advance.

It sounds like you're talking about the EWF - Enhanced Write Filter.
It's part of XPe you just need to make it part of your build.

 

[m_jannelli]

Thank you much Adora Belle, that is exactly what I was looking for! I
added the component to my image, disabled previously used NT Loader and
now I am running the new image. Seems like I was not able to find any
reference to it in the documentation of Xp Embedded. Thank you!

Mario Jannelli
www.silverino.com

 

[Adora Belle Dearheart]

Thank you much Adora Belle, that is exactly what I was looking for! I
added the component to my image, disabled previously used NT Loader and
now I am running the new image. Seems like I was not able to find any
reference to it in the documentation of Xp Embedded. Thank you!

....we have documentation? When did that happen? Actually, being serious
for a mo, I'd suggest that you get hold of one of the XPe books - our
own Sean Liming wrote Windows XP Embedded Advanced, so anything in there
you need help with you're pretty likely to get help with here.

 

[m_jannelli]

Thank you for your collaboration!
Should we consider switching to Xp Embedded I will get the book for
sure!
Thank you, have a nice weekend!

Mario Jannelli
www.silverino.com

 

[Sean Liming \(eMVP\)]

Heidi, Thank you!

Mario, EWF and CF is a popular request. The XPe Supplemental Toolkit book
covers the latest solution. There is also a MSDN article and you can search
this news groups for more information.

Regards,

Sean Liming
www.sjjmicro.com / www.seanliming.com
XP Embedded Book Author - XP Embedded Advanced, XP Embedded Supplemental
Toolkit.

 

[m_jannelli]

Thank you much Sean for your hint!
Take care.

Mario Jannelli
www.silverino.com

 

[m_jannelli]

I am back with a new question on EWF!
Seems like I need applications that are aware of EWF if I want them to
use volatile memory instead of Compact Flash card... In other words, if
I have a one application designed to use a disk, it will keep on using
the Compact Flash regardless of EWF file system. Am I correct?

Thank you in advance!

Mario Jannelli
www.silverino.com

 

[Sean Liming \(eMVP\)]

Applications don't have to be modified. The EWF protected partition will
still look like a read-writable disk. It is jsut the implementation of the
EWF Disk overylay vs. RAM (or RAM-REG) overlay. With Disk overlay all data
is preserved. with ram, the data is lost on reboot.


Regards,

Sean Liming
www.sjjmicro.com / www.seanliming.com
XP Embedded Book Author - XP Embedded Advanced, XP Embedded Supplemental
Toolkit.

 

[m_jannelli]

Thank you once again Sean. I understand that I don't have to modify my
applications, but I am sorry I don't get the EWF vs. RAM overlay
issue... Would you be so kind to describe me what it is? Thankx!

Mario Jannelli
www.silverino.com

 

[Sean Liming \(eMVP\)]

What are you struggling with?

Regards,

Sean Liming
www.sjjmicro.com / www.seanliming.com
XP Embedded Book Author - XP Embedded Advanced, XP Embedded Supplemental Toolkit.