Training
Module
Employ file recovery in Windows client - Training
In this module, you will learn about the Windows file backup and recovery tools.
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Restore points are created to let users select a previous system state. Each restore point contains the required information to restore the system to the selected state. Restore points are created before key changes are made to the system.
System Restore automatically manages the disk space that is allocated for restore points. It purges the oldest restore points to make room for new ones. System Restore allocates space based on the size of the hard disk and the version of Windows that the computer runs, as shown in the following table.
Windows version | Hard disk size | System Restore space |
---|---|---|
Windows 7 and later versions | > 64 GB | Up to five percent of total disk space or a maximum of 10 GB, whichever is less |
≤ 64 GB | Up to three percent of total disk space | |
Windows Vista | Up to 15 percent of the total disk space or a maximum of 30 percent of available disk space, whichever is less | |
Windows XP | >4 GB | Up to 12 percent of total disk space To change the maximum storage limit in Windows XP, use the System item in Control Panel. |
< 4 GB | Up to 400 MB |
System Restore automatically creates a restore point before any of the following events occur:
Users can configure System Restore to create restore points at regular intervals. Users can also manually create and name a restore point at any time from within the System Restore user interface. These restore points are saved and compressed, and are available in the list of restore points.
In Windows 7 and later versions, System Restore creates a scheduled restore point only if no other restore points have been created in the previous seven days. In Windows Vista, System Restore creates a checkpoint every 24 hours if no other restore points were created on that day. In Windows XP, System Restore creates a checkpoint every 24 hours, regardless of other operations.
Consider the following scenario:
In this scenario, the system is not restored to the "R1" restore point. Instead, the computer experiences a Stop error (0xc000021a). You restart the computer, but the system cannot return to the Windows desktop.
This is a known issue in Windows 10.
During the system restore process, Windows temporarily stages the restoration of files that are in use. It then saves the information in the registry. When the computer restarts, it completes the staged operation.
In this situation, Windows restores the catalog files and stages the driver (.sys) files to be restored when the computer restarts. However, when the computer restarts, Windows loads the existing drivers before it restores the later versions of the drivers. Because the driver versions do not match the versions of the restored catalog files, the restart process stops.
To recover from the failed restart and continue the restore process
After the failure occurs, restart the computer until it enters the Windows Recovery Environment (WinRE). To do this, you may have to use a hardware restart switch, and you may have to restart multiple times.
In the Windows Recovery Environment:
Note
You may have to use the F7 key to select this setting.
These steps restore the computer to its "R1" state.
To recover from the failed restart
To recover from the failed restart and roll back the restore process, follow these steps:
These steps return the computer to the state that it was in before you started the restore process.
To restore Windows to a restore point by using WinRE
To start the System Restore wizard on an affected computer, use WinRE instead of the Settings dialog box. To do this, follow these steps:
For more information about how to use WinRE, see the following articles:
Training
Module
Employ file recovery in Windows client - Training
In this module, you will learn about the Windows file backup and recovery tools.