Re: How can I replace the system serial driver with my driver?
From: Bill McKenzie (bill.mckenzie_at_nospam.conexant.com)
Date: 04/12/04
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Date: Mon, 12 Apr 2004 12:08:38 -0500
If you are using WinDbg, just go to the registry and change the SFCDisable
flag value.
I believe this is all the SFP utility from OSR is doing, although I don't
honestly know. See the following:
http://www.microsoft.com/whdc/hwdev/driver/sfp/wfp.mspx
http://support.microsoft.com/default.aspx?scid=kb;en-us;222473
Setting this registry value to 0xffffff9d on Win2K shuts off SFP until the
value is changed. This is not true on XP. On XP, the first time you don't
boot with WinDbg connected *wham* system file protection kicks back in.
What a pain. I don't really understand this as you have to have
administrator or system privledges to modify this reg key anyway.
Anyway, there you go.
-- Bill McKenzie Software Engineer - Prism 802.11 Wireless Solutions Conexant Systems, Inc. "David J. Craig" <SeniorDriversWriter@shogunyoshimuni.com.net> wrote in message news:eCgp32KIEHA.3528@TK2MSFTNGP09.phx.gbl... > You can use OSR's SFP utility for testing systems connected to windbg. > My other method is to modify or create an ImagePath key for the driver > and have it use my new driver. You can put it in a test subdirectory > under system32/drivers just to get it loaded. Deleting or renaming the > ImagePath subkey gets you the release version. > > "Bill McKenzie" <bill.mckenzie@nospam.conexant.com> wrote in message > news:uT7kEOKIEHA.2128@TK2MSFTNGP11.phx.gbl... > > On my target systems I don't screw with all of this mess. > > > > Some may have a problem with this, but I don't I just go into my > > windows\system32\DLLCACHE directory and delete everything, then I go > to my > > Windows\Driver Cache directory and either rename or delete everything > there > > as well. This takes away all of the backup files that WinXP uses in > system > > file protection. I think you get a pop or two after this warning that > > system file protection is having problems, and it may prompt for the > OS CD. > > Just ignore these and don't let it have the files back, and viola, no > more > > worrying about system file replacement. > > > > Make sure you only do this on a driver test or target system and not > on a > > machine you care about remaining stable. > > > > -- > > Bill McKenzie > > Software Engineer - Prism 802.11 Wireless Solutions > > Conexant Systems, Inc. > > > > > > "Marco" <sorry@nomail.com> wrote in message > > news:%23LuWEHIIEHA.3440@TK2MSFTNGP09.phx.gbl... > > > As you know that the system serial driver has not symbols, so the > SoftIce > > > can not watch the code. > > > I have compiled a new serial driver with symbols, I want to repalce > the > > > system one, so I could watch the code and debug the driver. How can > I do > > > this? > > > > > > > > > Thanks! > > > > > > > > > > > >
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