I have copied the content of my ISA
Server 2006 Standard Edition to the root drive (c:\),
inside a folder called en_ISA_Server_2006_std. Also I
have downloaded ISA Server 2006 SP1 (
ISA2006-KB943462-X86-ENU.msp ) and saved it inside a
folder, on the root drive, called : ISA Server 2006 SP1
as shown in the below image.

Follow the below steps to slip
stream ISA Server 2006 with SP1
-
Open a Command Prompt Windows by
clicking Start > Run , type cmd and
click on OK

-
Using Command Prompt, browse to the
folder FPC which is inside the
folder that has the content of the ISA Server 2006 CD,
by typing :
cd <isa-folder-name\fpc> , where
isa-folder-name is in
my case : en_ISA_Server_2006_std

-
Now its time to apply (integrate) SP1 from its
folder inside C:\ISA Server 2006 SP1 to the ISA Server
2006 installation file by running the following command
:
c:\<isa-folder-name\fpc>Msiexec /a
MS_FPC_Server.msi /p <isa-sp1-file-path>
where c:\<isa-folder-name\fpc>
is equal to : C:\en_ISA_Server_2006_std\fpc
and <isa-sp1-file-path> is equal to :
C:\ISA Server 2006 SP1\ISA2006-KB943462-X86-ENU.msp

and click on enter to execute the
command line
-
Service Pack 1 installation
wizard will launch, you can notice that the wizard
states that it will create a server image of
Microsoft ISA Server 2006 Service Pack 1 at a
specified network location. Click Next

-
The Network location will be the
<isa-folder-name\fpc> folder. Which we specified
previously to be : C:\en_ISA_Server_2006_std\fpc , click
Next
This will merge SP1 with ISA Server
2006

-
On the Ready to Install
the Program page, click Install

-
Merging between SP1 & ISA Server
2006 files will start



When installation is completed, click on
Finish

Congratulation...You now have ISA
Server 2006 + SP1 installation files. As you can see,
slip streaming ISA Server 2006 with Service Pack 1
is an easy process and straight forward.
Now you can simply rename the folder
en_ISA_Server_2006_std to be en_ISA_Server_2006_SP1_std
:)
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