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Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Chapter 1 Getting Started on the Cisco CRS-1 Router
File Storage
Internal Flash disk0: for Active System Software and Configurations
The default location for storage of active software files and configurations is the internal flash disk0:. In
new systems, the initial Cisco IOS XR software is installed on this disk.
Note The internal flash disk0: is used for installed and active software packages and configuration files only.
It should not be used to store compressed Package Installation Envelope (PIE) files. See the “Removable
Flash disk1: for Archive of Installation PIE Files” section on page 1-13 for information on the flash disk
used to store compressed PIE files.
See Chapter 6, “Managing Cisco IOS XR Software Packages,” for information on PIE files, and
instructions for adding and activating software packages.
Removable Flash disk1: for Archive of Installation PIE Files
The user-removable flash disk1: is used to store compressed PIE files. New versions of the installable
PIE files can also be downloaded from a network file server and stored on disk1:.
On new systems, a set of installation PIE files is installed on flash disk1:. This set includes a complete
set of Cisco IOS XR software packages.
See Chapter 6, “Managing Cisco IOS XR Software Packages,” for information on PIE files, and
instructions for adding and activating software packages.
Hard Disk
The user-removable Integrated Drive Electronics (IDE) hard disk is divided into three partitions, and is
used to store auxiliary files, such as system logs, temporary files, and user files.