Re: Upper Lower Filters in XP Registry

From: Jim Byrd (jrbyrd_at_spamlessadelphia.net)
Date: 02/28/05


Date: Sun, 27 Feb 2005 21:29:29 -0800

Hi Neal - I'd leave this alone for now - you're not AFAIK showing that
symptom at the moment. Upgrading firmware for a BIOS can be a little tricky
and has to be done "just right", EXACTLY following EVERY STEP of the
directions, or you risk making your machine unusable. After you get things
cleaned up, you can make that update - download it and read the directions
VERY carefully, several times, and don't proceed until you're absolutely
sure about what you need to do (and you can also check for any possible
updates to the firmware for those two optical drives.)

-- 
Please respond in the same thread.
Regards, Jim Byrd, MS-MVP
In news:bbu421tano0qrbj32q7hrmubsqkbu3nqjh@4ax.com,
Neal Lavon <nlavon@comcast.net> typed:
> Jim, I also just saw a BIOS update for the motherboard that says:
>
> Fix HDD in master may not be detected while CD-ROM connects to slave.
>
> ??
>
> Neal Lavon
> Takoma Park. MD
> USA
>
> On Sun, 27 Feb 2005 14:20:19 -0500, Neal Lavon <nlavon@comcast.net>
> wrote:
>
>> Grrr.
>>
>> Jim, I just changed not only my configuration but used two CD-ROM
>> drives with nothing, although there was some progress. I did re-cable
>> the CD-ROM as a slave using the top IDE connector of a new ribbon
>> cable. The DVD-ROM drive is now below it in the computer case. When I
>> first booted up with the Liteon, nothing.
>>
>> I replaced the Liteon with another ATAPI CD-ROM I have and when that
>> booted up, I noticed that the little icon for a spinning CD appeared
>> briefly by the mouse and seemed to "want" to load but in the end, did
>> not. I still got the same error message in Event Viewer.
>>
>> For what it's worth, here's the data in the box below the error
>> message:
>>
>> 0000: 03 04 68 00 01 00 b8 00   ..h...¸.
>> 0008: 00 00 00 00 0b 00 04 c0   .......À
>> 0010: 01 01 00 00 85 01 00 c0   ....?..À
>> 0018: 00 00 00 00 00 00 00 00   ........
>> 0020: 00 80 00 00 00 00 00 00   .?......
>> 0028: 3f 69 00 00 00 00 00 00   ?i......
>> 0030: ff ff ff ff 00 00 00 00   ÿÿÿÿ....
>> 0038: 40 00 00 c4 02 00 01 00   @..Ä....
>> 0040: ff 20 0a 12 4c 02 00 00   ÿ ..L...
>> 0048: 00 08 00 00 0a 00 00 00   ........
>> 0050: 00 00 c7 85 90 eb b4 86   ..Ç? [square box] ë´?
>> 0058: 00 00 00 00 f8 8b ef 86   ....ø?ï?
>> 0060: 00 60 f7 86 10 00 00 00   .`÷?....
>> 0068: 28 00 00 00 00 10 00 00   (.......
>> 0070: 01 00 00 00 00 00 00 00   ........
>> 0078: 70 00 04 00 00 00 00 0a   p.......
>> 0080: 00 00 00 00 08 00 00 00   ........
>> 0088: 00 00 00 00 00 00 00 00   ........
>>
>> Also on Driver File Details in Device Driver:
>>
>> C:\\WINDOWS\system32\drivers\Cdr4_xp.sys
>> C:\\WINDOWS\system32\driversCdral2k.sys
>> C:\\WINDOWS\system32\drivers\cdrom.sys
>> C:\\WINDOWS\system32\drivers\imapi.sys
>> C:\\WINDOWS\system32\drivers\pwd_2k.sys
>> C:\\WINDOWS\system32\drivers\redbook.sys
>> C:\\WINDOWS\system32\drivers\strorprop.dll
>>
>> In the Registry Key, 4D36E965-E325-11CE...
>> LowerFilters is REG_MULTI_SZ Cdr4_xp
>> UpperFilters REG_MULTI_SZ Cdralw2k pwd_2k
>> LowerFilters.Bak REG_MULTI_SZ PxHelp20 PFC
>> UpperFilters.Bak REG_MULTI_SZ InCDPass GEARAspiWDM
>>
>> There is no trace of Nero software (Ahead Company)  (InCD left) in
>> Add/Remove Programs. So I'm really stumped and frustrated.
>>
>> Questions:
>>
>> a) someone in a thread here said that the PxHelp20 PFC file is
>> corrupted. I have seen that it's a Trojan Virus and keeps CD-ROMs
>> from working properly. It is in the Drivers file. How does one
>> "disable" it? Just remove it from the Drivers File?
>>
>> b) delete in the Registry the Upper and Lower Filters.Bak files? Run
>> cdgone.reg again?
>>
>> I think I'm nearing a possible solution here. Thanks!
>>
>> Neal Lavon
>> Takoma Park, MD
>> USA
>> On Fri, 25 Feb 2005 22:35:32 -0800, "Jim Byrd"
>> <jrbyrd@spamlessadelphia.net> wrote:
>>
>>> Hi Neal - If you've wired and jumpered as you say, then you may
>>> well have a conflict.  I'd just switch the middle and end
>>> connectors (moving the drives if needed for convenience) if your
>>> documentation recommends that the one you currently have jumpered
>>> as Slave should be that way - some drives cannot support being a
>>> master.  For right now see if that fixes things for you. [Later you
>>> might want to do some reading on the net about alternative
>>> configurations such as having each HD be master and each CD/DVD
>>> drive be slave.  Do a Google on this for more info - it's thought
>>> by some experts to have some advantages.  Let's see if
>>> re-connecting the drives cleans things up first though.  Then you
>>> can look at things like that and doing such things as enabling DMA
>>> for your CD/DVD drives (which is a whole other thing :)  ) ]
>>> Please let us know what happens.


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