User's Manual

Glossary 163
RAM
Acronym for random-access memory. A system's primary temporary storage area
for program instructions and data. Each location in RAM is identified by a number
called a memory address. Any information stored in RAM is lost when you turn
off your system.
RAM disk
A memory-resident program that emulates a hard drive.
read-only file
A read-only file is one that does not allow you to edit or delete it. A file can have
read-only status if:
• Its read-only attribute is enabled.
• It resides on a physically write-protected diskette or on a diskette in a write-
protected drive.
• It is located on a network in a directory to which the system administrator has
assigned read-only rights to you.
readme file
A text file included with a software package or hardware product that contains
information supplementing or updating the documentation for the software or
hardware. Typically, readme files provide installation information, describe new
product enhancements or corrections that have not yet been documented, and
list known problems or other things you need to be aware of as you use the software
or hardware.
RIS
Provided by Microsoft, you can use the Remote Installation Services (RIS) to
install Windows operating systems to any number of client computers
simultaneously from a central location.
ROM
Acronym for read-only memory. Your system contains some programs essential
to its operation in ROM code. Unlike RAM, a ROM chip retains its contents even
after you turn off your system. Examples of code in ROM include the program
that initiates your system's boot routine and the POST.
RPM
Abbreviation for RPM Package Manager.