RAM EWF and plug&play ?!?

  • Thread starter Thread starter Stefan Bernögger
  • Start date Start date
S

Stefan Bernögger

Hi there,

My embedded image (EWF - RAM overlay) can not handle an
external hard disk connected via 1394.

After some testing we found out that if we use the same image without EWF at
all it is working fine. The hard disk is detected and installed by the
device manager and
shown as 227 combo ...

With the EWF system the disk is only detected, but then the device manager
shows a
disk drive with an exclamation mark and the message that the drivers could
not be installed.

Afterwards the system has to be rebooted this disk can not be uninstalled or
disabled ...

Another thing I learned is that if I have an EWF system on hard disk IDE-0
and a second
normal image (backup) on disk IDE-1 the plug&play is working with the backup
image if I
boot from IDE-1, but it is not working with the normal image if I booted
from IDE-0 and
switched to backup in the OS selection.

Somehow I think that there must be a problem with the EWF ...

Does anybody know what the problem is and how to fix this ?

Thanks for help in advance

Stefan
 
I don't see correlation between things you mention.

What RAM EWF should protect?
What is the boot disk?
When do you connect 1394 disk? (is it removable?)

Some more info would be nice.


Regards,
Slobodan
 
Dear Slobodan,

I have an image with EWF (RAM overlay) and a 2,5" hard disk which can be
connected via 1394.

With a normal XP pro and also with our XPe WITHOUT EWF the disk is detected
as either "disk drive" or "227 combo USB/1394 device..."

With EWF the disk is blocked or rejected or ??? (the device manager shows an
exclamation mark for the disk drive entry and says that the driver can not be installed
and this entry is blocked then, the device manager can not update search for hardware changes etc.)

So yesterday I talked to some experts from our distributor and I was told that the disk has to be connected
during the FBA before the EWF is enabled...

Now after testing for some hours we thought we got it, but now we have the following situation:

If the disk is connected during FBA (after machine release) the EWF can not be created
as you can see in the fbalog. 3 disks are found (the 3rd is the connected one) and it tries to
create this strange partition in the free space of disk 0.

8:16:36 AM - [FBASetProgressText] Installing Components...
8:17:31 AM - [FBALaunch] C:\WINDOWS\system32\fbreseal.exe -done (ExitCode: 0x0)
8:17:31 AM - ConfigureEwf() Start.
8:17:31 AM - Getting EWF config parameters from registry.
8:17:31 AM - Non El Torito disk configuration.
8:17:31 AM - EWF Partition Size = 10240 (KBytes), Levels = 1, Volumes = 1.
8:17:31 AM - Protected Volume Config #0 :
8:17:31 AM - Disk= 0,Part= 1,DiskType= IDE,Type= RAM.
8:17:31 AM - Enable= Disabled, Optimize= 0, LazyWrite= N.
8:17:31 AM - Found 3 Hard Disks.
8:17:31 AM - Disk #0 layout info:
8:17:31 AM - EXTENDED partition,start=0x00000000007d8200, len=0x0000000ddefd1600, type= 15
8:17:31 AM - LOGICAL partition,start=0x00000000007d8200, len=0x00000007cfca5e00, type= 11
8:17:31 AM - LOGICAL partition,start=0x00000007d047e000, len=0x00000005e2180000, type= 11
8:17:31 AM - EXTENDED_FREE partition,start=0x0000000db25fe000, len=0x000000002d1ab800, type= 0
8:17:31 AM - PRIMARY partition,start=0x0000000ddf7a9800, len=0x000000001900e600, type= 6
8:17:31 AM - FREE partition,start=0x0000000df87b7e00, len=0x00000000007d8200, type= 0
8:17:31 AM - Allocating EWF in LOGICAL partition, start=0x0000000db25fe000, len=0x000000000000fc00.
8:17:32 AM - Created EWF partition on Disk = 0, partition = 4,size = 0x0000000000007e00 .
8:17:32 AM - ewfOpen.
8:17:32 AM - ewfOpen returned invalid file handle.
8:17:32 AM - Deleting EWF Partition #4, disk#=0, type=69
8:17:32 AM - ConfigureEwf() End, status = 0x2.
8:17:32 AM - [CallEntryPointThread] C:\WINDOWS\system32\ewfdll.dll, ConfigureEwf (Error: 0x2)
8:17:32 AM - [FBASetProgressText] Resetting Setup Flag...

The weird thing is that it allocates EWF with len=0xfc00, but then wants to create a partition
with size=0x7e00 ?!?

If the disk is not connected during FBA eveything is ok, but then the disks can not be used anymore even if I disable
the EWF ... nothing it always shows the problem in the device manager.

Any help is very appreciated, because I run out of time now
Thanks in advance

Best regards,

Stefan

PS.: As the experts suggested we have installed all 1394 and USB related components and installer compnonets ...
 
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