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Answer File = Unattend.txt
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. |