EWF and compact flash



Dee
07-09-2005, 09:24 PM
Hello,

I am interested in finding out if it is worth adding EWF to my
configuration. I have a CF and it is programmed nonremovable, so I am able
to partition it. My embedded system will have a camera connected to it and
CF's role will be to store many images. Since the CF has a finite amount of
writes associated with it, I thought it might be worthwhile to reduce the
writes by adding EWF for the OS only. So I would have 2 volumes, 1 for the
OS (EWF protected) and one for the image storage (not protected). But if
the amount of writes from the OS are small compared to all the writes from
the camera, it may not even be worth the trouble to add the EWF.

My question here is, is there alot of writing taking place by the OS. The
final product will have someone starting and stopping a camera program but
that should be about it.

If it is worth adding EWF, then will I be able to have 2 partitions - 1
protected and 1 not protected.

Thanks
Dee

Slobodan Brcin \(eMVP\)
07-09-2005, 09:24 PM
Dee,

You should not attempt to use CF without RAM EWF.

Yes you can have two or more partitions. And you can protect any partitions
that you wish.

XPe do allot of writing during the boot and little lett during the work. but
it is significant amount of writes at certain sectors so it will/can ruing
it.
So you should use EWF

Regards,
Slobodan


"Dee" <didst2@aol.com> wrote in message
news:uwqrz$vVFHA.1384@TK2MSFTNGP09.phx.gbl...
> Hello,
>
> I am interested in finding out if it is worth adding EWF to my
> configuration. I have a CF and it is programmed nonremovable, so I am
> able to partition it. My embedded system will have a camera connected to
> it and CF's role will be to store many images. Since the CF has a finite
> amount of writes associated with it, I thought it might be worthwhile to
> reduce the writes by adding EWF for the OS only. So I would have 2
> volumes, 1 for the OS (EWF protected) and one for the image storage (not
> protected). But if the amount of writes from the OS are small compared to
> all the writes from the camera, it may not even be worth the trouble to
> add the EWF.
>
> My question here is, is there alot of writing taking place by the OS. The
> final product will have someone starting and stopping a camera program but
> that should be about it.
>
> If it is worth adding EWF, then will I be able to have 2 partitions - 1
> protected and 1 not protected.
>
> Thanks
> Dee
>
>

KM
07-09-2005, 09:24 PM
Dee,

> I am interested in finding out if it is worth adding EWF to my

From your system description below it'd make sense to add EWF.

> configuration. I have a CF and it is programmed nonremovable, so I am
> able to partition it. My embedded system will have a camera connected to
> it and CF's role will be to store many images. Since the CF has a finite
> amount of writes associated with it, I thought it might be worthwhile to
> reduce the writes by adding EWF for the OS only. So I would have 2
> volumes, 1 for the OS (EWF protected) and one for the image storage (not
> protected). But if the amount of writes from the OS are small compared to
> all the writes from the camera, it may not even be worth the trouble to
> add the EWF.
>
> My question here is, is there alot of writing taking place by the OS. The

A lot. Especially when you think about registry writes.

> final product will have someone starting and stopping a camera program but
> that should be about it.
>
> If it is worth adding EWF, then will I be able to have 2 partitions - 1
> protected and 1 not protected.

Yes, you will be able to do that since you marked the card as fixed.

KM

Dee
07-09-2005, 09:24 PM
Okay, thanks to both of you.

"KM" wrote:

> Dee,
>
> > I am interested in finding out if it is worth adding EWF to my
>
> From your system description below it'd make sense to add EWF.
>
> > configuration. I have a CF and it is programmed nonremovable, so I am
> > able to partition it. My embedded system will have a camera connected to
> > it and CF's role will be to store many images. Since the CF has a finite
> > amount of writes associated with it, I thought it might be worthwhile to
> > reduce the writes by adding EWF for the OS only. So I would have 2
> > volumes, 1 for the OS (EWF protected) and one for the image storage (not
> > protected). But if the amount of writes from the OS are small compared to
> > all the writes from the camera, it may not even be worth the trouble to
> > add the EWF.
> >
> > My question here is, is there alot of writing taking place by the OS. The
>
> A lot. Especially when you think about registry writes.
>
> > final product will have someone starting and stopping a camera program but
> > that should be about it.
> >
> > If it is worth adding EWF, then will I be able to have 2 partitions - 1
> > protected and 1 not protected.
>
> Yes, you will be able to do that since you marked the card as fixed.
>
> KM
>
>
>


EWF and compact flash