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34 About Your System
DIMM pairs must be
matched in size,
speed, and
technology. The
following DIMM
pair is
mismatched: DIMM x
and DIMM y.
Mismatched or
unmatched DIMMs
installed; faulty or
improperly seated memory
module(s).
Ensure that all pairs of
memory modules are of the
same type and size and that
they are properly installed.
See "System Memory" on
page 100. If the problem
persists, see
"Troubleshooting System
Memory" on page 142.
DIMMs must be
populated in
sequential order
beginning with
slot 1. The
following DIMM is
electrically
isolated: DIMM x.
The specified DIMM is
inaccessible to the system
due to its location.
DIMMs must be
populated in sequential
order, beginning with
slot 1.
Populate 2, 4, or 8 DIMMs
sequentially beginning with
slot 1. See "System Memory"
on page 100.
DIMMs should be
installed in
pairs. Pairs must
be matched in
size, speed, and
technology.
Mismatched or
unmatched DIMMs
installed; faulty or
improperly seated memory
module(s). The system will
operate in a degraded
mode with reduced ECC
protection. Only memory
installed in channel 0 will
be accessible.
Ensure that all pairs of
memory modules are of the
same type and size and that
they are properly installed.
See "System Memory" on
page 100. If the problem
persists, see
"Troubleshooting System
Memory" on page 142.
Dual-rank DIMM
paired with
Single-rank DIMM -
The following
DIMM/rank has been
disabled by BIOS:
DIMM x Rank y
Mismatched DIMMs
installed; faulty memory
module(s). The system has
detected a dual-rank
DIMM paired with a
single-rank DIMM. The
second rank of the dual-
rank DIMM will be
disabled.
Ensure that all pairs of
memory modules are of the
same type and size and that
they are properly installed.
See "System Memory" on
page 100. If the problem
persists, see
"Troubleshooting System
Memory" on page 142.
Table 1-7. System Messages (continued)
Message Causes Corrective Actions
Book.book Page 34 Monday, September 14, 2009 12:57 PM