1
1
<?xml version="1.0" encoding="utf-8"?>
2
2
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
3
<!ENTITY appversion "0.8.0">
4
<!ENTITY manrevision "1.3">
5
<!ENTITY date "January 2011">
3
<!ENTITY appversion "0.12.0">
4
<!ENTITY manrevision "1.4">
5
<!ENTITY date "February 2012">
6
6
<!ENTITY app "gparted">
7
7
<!ENTITY appname "GParted">
8
8
<!-- Information about the entities:
44
<year>2008, 2009, 2010, 2011</year>
44
<year>2008, 2009, 2010, 2011, 2012</year>
45
45
<holder>Curtis Gedak</holder>
95
95
<!-- modifying/reusing someone else's document. If not, you can omit it. -->
98
<revnumber>GParted Manual V1.4</revnumber>
99
<date>February 2012</date>
101
<para role="author">Curtis Gedak</para>
102
<para role="publisher">GParted Project</para>
103
<para role="annotations">Describes version 0.12.0 of GParted</para>
98
107
<revnumber>GParted Manual V1.3</revnumber>
99
108
<date>January 2011</date>
1122
<!-- ============= To Change a Partition's UUID ========================== -->
1123
<sect3 id="gparted-changing-partition-uuid">
1124
<title>Changing a Partition UUID</title>
1126
To change the Universally Unique Identifier (UUID) of a partition:
1130
Select an unmounted partition.
1131
See <xref linkend="gparted-select-partition"/>.
1137
<menuchoice><guimenu>Partition</guimenu>
1138
<guimenuitem>New UUID</guimenuitem></menuchoice>.
1139
The application displays the set a new random UUID
1140
operation in the <guilabel>Operations Pending</guilabel>
1145
Changing the UUID might invalidate the Windows Product
1146
Activation key (WPA).
1149
On FAT and NTFS file systems, the Volume Serial Number
1150
is used as UUID. Changing the Volume Serial
1151
Number on the Windows system partition, normally C:,
1152
might invalidate the WPA key. An invalid WPA key will
1153
prevent login until you reactivate Windows.
1156
In an attempt to avoid invalidating the WPA key, on
1157
NTFS file systems only half of the UUID is set to a
1158
new random value. On FAT file systems, such a precaution
1162
The WPA key should not be affected by changing the
1163
UUID of data partitions or removable media partitions.
1164
In rare cases, a partition that is present
1165
at boot time might be an exception to this rule.
1170
Changing the UUID when there is no need to do so might
1171
cause a GNU/Linux system to fail to boot, or to fail
1172
to mount a file system.
1175
Changing the UUID is only required after copying a
1176
partition. The UUID change is needed to prevent
1177
duplicate UUIDs when both the source and the copy of
1178
the partition are used on the same computer.
1181
If boot or mount problems occur you might need to edit
1182
configuration files, such as /etc/fstab, and
1183
regenerate the grub menu to ensure that the correct
1113
1192
<!-- ============= Specifying Partition Details ====================== -->
1114
1193
<sect3 id="gparted-specify-partition-details">
1115
1194
<title>Specifying Partition Details</title>
1634
1713
The copy of the partition has the same label
1635
1714
and the same Universally Unique Identifier (UUID)
1636
1715
as the source partition.
1637
This can cause a problem when mount actions use the
1638
partition label or the UUID to identify the partition.
1639
The problem is that the label and the UUID are not unique.
1642
You are advised to do one of the following:
1716
This can cause a problem when booting, or when mount actions
1717
use the partition label or the UUID to identify the
1721
The problem is that the operating system will randomly
1722
select to mount either the source, or the copy of the
1723
partition. For example, on the first mount action the
1724
source partition might be mounted. On the next mount action
1725
the copy of the partition might be mounted. Over time this
1726
random nature of partition mounting might make files seem to
1727
mysteriously appear or disappear depending upon which
1728
partition is mounted. Random mounting of the source or the
1729
copy of the partition might also cause severe data
1733
To avoid the problem you are advised to do one of the
1646
Change the UUID of the partition.
1647
If the partition label is not blank, change the label
1738
After you have applied the copy operation:
1742
Change the UUID of either the source, or the copy
1744
See <xref linkend="gparted-changing-partition-uuid"/>.
1749
If the partition label is not blank then change the
1750
label of either the source, or the copy of the
1752
See <xref linkend="gparted-setting-partition-label"/>.
1760
After you have applied the copy operation, delete or
1761
reformat the source partition.
1653
1766
Use some other method to ensure that the source
1654
partition and the copy of the source partition
1655
are not used on the same computer at the same time.
1767
partition and the copy of the partition are not used
1768
on the same computer at the same time. For example,
1769
if the copy of the partition is on a separate drive
1770
then remove the drive from the computer.
1658
1773
</itemizedlist>