Cadence OrCAD and Allegro 17.4-2019 Installation Guide for Windows
Performing Special Tasks
October 2019 58 Product Version 17.4-2019
© 1999-2019 All Rights Reserved.
Note: Installation might take more time if backup is on.
1. Edit the INI file to set the IsrBackup variable to Y. The following sample file has the
variable set to Y.
[State]
TargetDir=C:\Cadence\SPB_17.4
IsrBackup=Y
2. At the command prompt, give the following command:
\SPB172_ISR.exe !quiet=C:\Silent_ISR.ini
Where, C:\Silent_ISR.ini is the INI file with IsrBackup set to Y.
To install HotFix in silent mode with backup off:
1. Edit the INI file to set the IsrBackup variable to N as shown in the sample file:
[State]
TargetDir=C:\Cadence\SPB_17.4
IsrBackup=N
2. At the command prompt, give the following command:
\SPB166_ISR.exe !quiet=C:\Silent_ISR.ini
Where, C:\Silent_ISR.ini is the INI file with IsrBackup set to N.
Switching Versions
You can use Cadence Switch Release to switch between the different Cadence installations
earlier than 17.4-2019 in your system. To start this program choose Cadence – Cadence
Switch Release from the Start menu.
Once you install 17.4-2019, you should only use the latest version of the Cadence Switch
Release program to change releases.
Uninstalling Software
Note: If you perform a series of installations, uninstallations, and reinstallations, you run the
risk of corrupting the CDS_LIC_FILE environment variable on the file server or on the remote
