Dell PowerEdge M620 Owner's Manual page 124

Table 1-27. Blade Messages
Message
DIMMs should be
installed in
pairs. Pairs must
be matched in
size, speed, and
technology.
DIMMs must be
populated in
sequential order
beginning with
slot 1. The
following DIMM is
electrically
isolated: DIMM x.
DIMM pairs must be
matched in size,
speed, and
technology. The
following DIMM
pair is
mismatched: DIMM
[x] and DIMM [y].
Diskette read
failure.
Drive not ready.
124
About Your System
(continued)
Causes
Mismatched or
unmatched DIMMs
installed; faulty or
improperly installed
memory modules. The
system operates in a
degraded mode with
reduced ECC protection.
Only memory installed in
channel 0 is accessible.
The specified DIMM is
inaccessible to the system
due to its location.
DIMMs must be
populated in sequential
order, beginning with
slot 1.
Mismatched or
unmatched DIMMs
installed; faulty or
improperly seated memory
modules.
Faulty or improperly
inserted diskette.
Diskette missing or
improperly inserted in
diskette drive.
Corrective Actions
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 171. If the problem
persists, see
"Troubleshooting Blade
Memory" on page 319.
Populate two, four, or eight
DIMMs sequentially.
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 171 and
"Troubleshooting Blade
Memory" on page 319.
Replace the diskette.
Reinsert or replace the
diskette.