System Upgrades
Upgrading the Main Memory
15-8
SPARCbook Portable Workstation User Guide
This section provides a worked example as a guide to carrying out this
part of the upgrade. It is assumed that a SPARCbook 3000 with 64MB
of DRAM and a 3GB hard disk drive is being fitted with a memory
upgrade to 128MB. It is also assumed that the hard disk has the factory
installed partitions shown in “Boot Disk Partitions” on page 6-5.
Why Repartition the SPARCbook’s Hard Disk
ò
The boot disk is organized into a number of
partitions when the drive is formatted, each with a
designated function. The layout of these partitions on
the disk can vary, but the default (factory installed)
partition map for a SPARCbook is shown below. See
also “Boot Disk Partitions” on page 6-5.
ò
The diagram does not represent the partitions to
scale but does show how the partitions are organized
contiguously and without overlaps. The exception to
this is the
backup
partition which occupies the whole
disk and overlaps all the other partitions.
ò
The
save
partition must be the same size as the
memory capacity of the system.
This is because the Save
and Resume feature
copies the
contents of the
main memory
to an equal
sized area of
the hard disk
before
powering your
SPARCbook down and
uses this information to
Resume the next time you power on (see
“How Save and Resume Functions” on page 5-2).
Therefore, if you increase the memory, you must
increase the save partition’s size.
ò
You increase the size of the
save
partition by taking
space from partitions with spare (or free) space, using
the
format
utility. For example, if the
opt
partition
(or
/export/home
if present in your partiton map)
has sufficient free space, you reduce its size and then
add the freed up space to the
save
partition.
ò
The
swap
partition is used by the operating system
to store applications that are running in the
background.
Therefore, an increase in the size of the
main memory may require an increase in
the size of the
swap
partition.
ò
The
swap
partition can
be increased in size by
taking free space from
other partitions in the
same way as for the
save
partition, or by
creating a
swap
filesystem and
mounting it as described in
root
swap
var
save
usr
opt
0
1
3
4
5
6
backup
2
S3UG4_Book Page 8 Friday, August 8, 1997 11:37 am
