IBM 86884RX Installation Guide - Page 102

Microsoft Reserved Partition, boot drive, data drive

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7. If you performed step 2, follow the instructions to create the system partition and Microsoft Reserved partition, as described in 4.2.6, "Text-mode setup" on page 91. 8. Complete the Windows installation as instructed. 9. Install the additional device drivers, as described in 4.2.8, "Post-setup phase" on page 93. 10.Make a backup copy of the Windows entry in the Boot Manager menu, as described in "Exporting and importing the operating system EFI boot record" on page 96. 4.2.2 Microsoft Reserved Partition The Microsoft Reserved Partition (MSR partition) reserves space on each disk drive for subsequent use by the operating system software. For instance, dynamic disk configuration is stored in the MSR partition. During installation, the MSR partition is automatically created. Every GPT disk used by Windows must contain an MSR partition. The order of partitions on the disk should be ESP (if the disk is a boot disk), MSR partition, followed by primary data partition(s). It is particularly important that the MSR partition is created before other primary data partitions. Note: Each Windows boot drive must contain an ESP, an MSR partition, and at least one basic data partition that contains the operating system. Each GPT data drive must contain at least an MSR partition and one basic data partition. The order of partitions on the Windows boot disk is shown in Figure 4-10. Protective MBR EFI System Partition (E S P ) M ic ro so ft Reserved Partition (MSR) Data partition(s) Figure 4-10 Windows boot GPT disk structure When initially created, the size of the MSR partition depends on the size of the disk drive: On drives less than 16 GB in size, the MSR partition is 32 MB. On drives greater than or equal to 16 GB, the MSR partition is 128 MB. 88 IBM ^ xSeries 450 Planning and Installation Guide

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88
IBM
^
xSeries 450 Planning and Installation Guide
7.
If you performed step 2, follow the instructions to create the system partition
and Microsoft Reserved partition, as described in 4.2.6, “Text-mode setup” on
page 91.
8.
Complete the Windows installation as instructed.
9.
Install the additional device drivers, as described in 4.2.8, “Post-setup phase”
on page 93.
10.Make a backup copy of the Windows entry in the Boot Manager menu, as
described in “Exporting and importing the operating system EFI boot record”
on page 96.
4.2.2
Microsoft Reserved Partition
The
Microsoft Reserved Partition
(MSR partition) reserves space on each disk
drive for subsequent use by the operating system software. For instance,
dynamic disk configuration is stored in the MSR partition.
During installation, the MSR partition is automatically created.
Every GPT disk used by Windows must contain an MSR partition. The order of
partitions on the disk should be ESP (if the disk is a boot disk), MSR partition,
followed by primary data partition(s). It is particularly important that the MSR
partition is created before other primary data partitions.
The order of partitions on the Windows boot disk is shown in Figure 4-10.
Figure 4-10
Windows boot GPT disk structure
When initially created, the size of the MSR partition depends on the size of the
disk drive:
±
On drives less than 16 GB in size, the MSR partition is 32 MB.
±
On drives greater than or equal to 16 GB, the MSR partition is 128 MB.
Note:
Each Windows
boot drive
must contain an ESP, an MSR partition, and
at least one basic data partition that contains the operating system. Each GPT
data drive
must contain at least an MSR partition and one basic data partition.
Protective
MBR
EFI
System
Partition
(ESP)
Microsoft
Reserved
Partition
(MSR)
Data partition(s)