[SystemRestore] (Unattend.txt)

[SystemRestore]

The [SystemRestore] section contains entries for specifying the System Restore feature.

Entry	Description
CheckpointCalendarFrequency	Specifies the calendar frequency with which Setup creates automatic system checkpoints or restore points.
CheckpointSessionFrequency	Specifies the session length frequency after which Setup creates an automatic system checkpoint or restore point.
MaximumDataStorePercentOfDisk	Specifies the maximum percentage of the hard disk to use for the System Restore datastore.
RestorePointLife	Specifies the maximum age of a restore point before Setup automatically purges it from the datastore.

This sample demonstrates one use of the [SystemRestore] section of Unattend.txt.

[SystemRestore]
CheckpointCalendarFrequency = 2
CheckpointSessionFrequency = 10
MaximumDataStorePercentOfDisk = 25
RestorePointLife = 10

Specifies the calendar frequency with which Setup creates automatic system checkpoints or restore points.

Syntax	CheckpointCalendarFrequency = days
Value	days An integer.
Default Value	1
Registry entry	HKEY_LM\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\ SystemRestore\RPGlobalInterval
Example	CheckpointCalendarFrequency = 2
Comments	Setup calculates the time since the last restore point, converts this entry to its equivalent number of seconds, and then writes that value to the registry. CheckpointCalendarFrequency is checked before CheckpointSessionFrequency.

Specifies the session length frequency after which Setup creates an automatic system checkpoint or restore point.

Syntax	CheckpointSessionFrequency = hours
Value	hours An integer.
Default Value	10
Registry entry	HKEY_LM\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\ SystemRestore\RPSessionInterval
Example	CheckpointSessionFrequency = 10
Comments	Setup calculates the time since the last restore point, converts this entry to its equivalent number of seconds, and then writes that value to the registry. CheckpointCalendarFrequency is checked before CheckpointSessionFrequency.

Specifies the maximum percentage of the hard disk to use for the System Restore datastore.

Syntax	MaximumDataStorePercentOfDisk = disk_percentage
Value	disk_percentage A two-digit integer.
Default Value	12
Registry entry	HKEY_LM\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\ SystemRestore\DiskPercent
Example	MaximumDataStorePercentOfDisk = 25
Comments	If the size of the datastore is minimal, Setup might purge restore points before they reach the maximum age set by RestorePointLife.

Specifies the maximum age of a restore point before Setup automatically purges it from the datastore.

Syntax	RestorePointLife = integer
Value	days An integer.
Default Value	30
Registry entry	HKEY_LM\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\ SystemRestore\RPLifeInterval
Example	RestorePointLife = 10
Comments	Setup converts this entry to its equivalent number of seconds and writes that value to the registry.