Dell OptiPlex Gs Reference and Installation Guide (.pdf) - Page 50

Using Image Files, Loading an Image File, Saving an Image to a File

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Using Image Files An image file contains a representation of the system configuration. The Plug and Play support software looks at NVRAM for the system configuration. If NVRAM becomes corrupted, you can load an image file to boot the system with a valid system configuration and save the configuration back to NVRAM. Saving and loading complete system configuration information provides a way to restore a working configuration should something happen to the NVRAM. For instance, your hard-disk drive might become corrupted or unusable, or you might want to discard recent changes to your system configuration and restore a previous configuration. Another advantage of saving complete system configuration information is that you can use the image file to load identical configurations on several systems. NOTE: To load identical configurations on multiple systems, you must copy both the system.img and icu.ndx files onto each system. Loading an Image File You can load system configuration information from a previously saved configuration image file, replacing the information in the ICU's working memory with information from the specified file. To do so, select LOAD IMAGE from the Advanced menu. When you exit the ICU, you can save the information to NVRAM or exit without saving changes to the configuration information. Saving an Image to a File After you have configured your system, you can save the image of the ICU's currently saved configuration information to a new configuration image file or resave the image back into the previously specified file. To save the information into a new file, select the SAVE IMAGE AS option from the Advanced menu. To save the information back into the previously specified image file, select SAVE IMAGE from the Advanced menu. The system configuration information is not saved to NVRAM until you exit the ICU and save the changes. The ICU also saves the current image to a file named system.img in the current directory when you save to NVRAM. NOTE: You should keep a backup copy of a working configuration in an .img file on diskette in case you ever need to restore the configuration. 3-12 Dell OptiPlex Gs and Gs+ Low-Profile Systems Reference and Installation Guide

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3-12
Dell OptiPlex Gs and Gs+ Low-Profile Systems Reference and Installation Guide
Using Image Files
An image file contains a representation of the system
configuration. The Plug and Play support software looks
at NVRAM for the system configuration. If NVRAM
becomes corrupted, you can load an image file to boot the
system with a valid system configuration and save the
configuration back to NVRAM.
Saving and loading complete system configuration infor-
mation provides a way to restore a working configuration
should something happen to the NVRAM. For instance,
your hard-disk drive might become corrupted or un-
usable, or you might want to discard recent changes to
your system configuration and restore a previous
configuration.
Another advantage of saving complete system configura-
tion information is that you can use the image file to load
identical configurations on several systems.
NOTE: To load identical configurations on multiple sys-
tems, you must copy both the
system.img
and
icu.ndx
files
onto each system.
Loading an Image File
You can load system configuration information from a
previously saved configuration image file, replacing the
information in the ICU’s working memory with informa-
tion from the specified file. To do so, select
LOAD IMAGE
from the Advanced menu. When you exit the ICU, you can
save the information to NVRAM or exit without saving
changes to the configuration information.
Saving an Image to a File
After you have configured your system, you can save the
image of the ICU’s currently saved configuration infor-
mation to a new configuration image file or resave the
image back into the previously specified file. To save the
information into a new file, select the
SAVE IMAGE AS
option from the Advanced menu. To save the information back
into the previously specified image file, select
SAVE IMAGE
from the Advanced menu. The system configuration informa-
tion is not saved to NVRAM until you exit the ICU and save
the changes. The ICU also saves the current image to a file
named
system.img
in the current directory when you save to
NVRAM.
NOTE: You should keep a backup copy of a working con-
figuration in an
.img
file on diskette in case you ever need to
restore the configuration.