RAM-EWF on CF (IDE2) when inserting HDD on IDE1 but still boot from CF

Similar Threads:

1.EWF for CF and disabling RAM overlay

I am working on getting EWF to work using a RAM overlay.  I don't want
to create an EWF partition on an IDE drive though.

I have followed the instructions from the newsgroups, the EWF for CF
component on XPEfiles and in "Windows XP Embedded Advanced."

The overlay is working, but, I have significnat customization to be
done after FBA has completed.

Is there a way to allow EWF to be disabled using this method and then
re-enabled to commit changes?  The book says no but I have seen it done
before.

Thanks
PJC

2.CF and HDD with EWF protection

Hello all,

I have a speculative question about a future project that I am being
lumbered with.
We are intending to build a XPe OS image for a 2 Gb CF card. I have
done this before so this should not be a problem.
However, they also want to put an 80Gb SATA drive into the unit with
all the applications and multimedia files on.
Is there a way to create a EWF partition on the CF to protect both the
CF and the SATA drive as well?
I assume there must be but as I haven't done this before and was just
wondering if it is possible before the project starts and I have to
make it work!!
As I say, this is just a "what if" question at the moment so there is
no urgency to it.
Thanks for any help anyone can offer.

Lucy.

3.Disable EWF operation hang in RAM Reg mode of Removable CF.

I built a XPe runtime with RAM Reg mode EWF,then run FBA on a SanDisk 
Removable CF(on secondary master IDE channel).
When FBA is completed, I know EWF is disabled as default properly by running 
"ewfmgr c:"
I enable EWF normally too after installing my software.

However,I can't disable it by "ewfmgr c: -commitanddisable" as some 
documents said,
so did the command "ewfmgr c: -disable"
All of two commands hang after printing the first line.
All I can do is restarting my machine.and EWF is still enabled .
When I come to the command "ewfmgr c: -commitanddisable -live", it is OK to 
disable EWF and commit data.

Is it normal in this case?
I wonder if it is only the "ewfmgr c: -commitanddisable -live" that is valid 
in SP2 RAM Reg mode EWF with removable CF.

I am confused about RAM Reg mode EWF notwithstanding I search so much 
resource by google.
My XPe configuration is a reduced one buided with SP2.
I think I have added enouch dependency and customization for EWF.

Moreover, It is stange that EWF didn't work when I copy the post-FBA image 
from one CF card to the other CFs.
The other CFs image report the following error when running "ewfmgr c:":
  "Error getting protect volume configuration information with errror 1"
I just install CFs in the same IDE channel.
Now I only deploy my pre-FBA image to all devices.
It is a painful experience.

Any helps will be greatly appreciated.


I have added the following extra registry entry:
     [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ewf\Parameters\Protected\Volume0]
      "VolumeID"="{1EA414D1-6760-4625-8CBE-4F9F85A48E15}"
      "Type"=dword:00000001
      "ArcName"="multi(0)disk(0)rdisk(0)partition(1)"
      "Enabled"=dword:00000000
     [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{71A27CDD-812A-11D0-BEC7-08002BE2092F}]
       "UpperFilters"=REG_MULTI_SZ:"EWF"
I verified the following components in my project:
    Background Disk defragmentation Disable
    Class Installer: storage volumes
    volume shadow copy service
    Pnp (user mode)
    Removable storage service
"Enhanced Write Filter" component is modified as "Microsoft Windows XP 
embedded help"

The following message is reported just after FBA finished:
Protected Volume Configuation
Type: RAM(REG)
State: Disabled
Boot Command: NO_CMD
 param1      0
 param2      0
Volume ID: 20 46 21 46 00 7E 00 00 00 00 00 00 00 00 00 00
Device Name: "\Device\Harddisk0\DP(1)0-0+1"
Max levels: 1
Clump size: 512
current levels:1
... 

4.CF Ram Reg EWF "Incorrect function"

Maybe a solution for some, more than a question.

My configuration:
- Primary IDE
-- Master: harddisk (temporary)
-- Slave: CD-ROM drive (temporary)
- Secondary IDE:
-- Master: CF (set to non-removable)
- Floppy: drive connected (temporary), no disk present.

The final configuration will only have the CF; no HD, CD or floppy.
There's no support for Floppy or CD-ROM in the XPe target.


I let FBA run on harddisk, made the registry changes as per the docs,
rebooted: "ewfmgr c:" showed a working RAM REG EWF.

Then I copied everything from HD to CF, disconnected the HD, and rebooted
from CF.  "ewfmgr C:" now said "Incorrect function".

I rebooted once more to be sure, checked the registry settings (all still
OK), but it still said "Incorrect function".

Then I disconnected the CD-ROM and floppy drives and tried once more: EWF
was now working.


There was a CD in the drive, but there's no CD-ROM support in the target,
nor floppy disk support, yet somehow one of these still interfered with
EWF.
I suspect it's the CD, and that the problem will disappear if it is
connected after the CF in the PM-PS-SM-SS sequence (as secondary slave for
example).

For this target I only need the CF, but I can imagine that it would cause
problems iif I had needed the CD-ROM too: the hardware only allows me to
connect drives to the primary channel, and the CF is fixed as secondary
master (on the mainboard).

5.CF and RAM EWF

When using EWF with Ram Overlay, is there any advantage going with
"Industrial" grade CF over standard grade?  Besides the extended temp, the
only additional item I saw was wear leveling which shouldn't be an issue
with RAM EWF correct?

Richard

6. EWF RAM overlay on CF failed

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8. RAM EWF on CF hit and miss