The capability to restore to a previous point in time or having the new Shadow Copy feature available can be a time saver if something goes wrong or if you delete a file. It is not recommended to disable System Restore. If you plan on upgrading to Windows Vista or running a clean install and will need extra space, consider reducing the space after installation has completed. If you are concerned with losing the previous restore points, wait until you do not need them anymore before reducing the allocated space. The advantage is gaining extra free space. When decreasing the space allocated to System Restore, you will loose the earlier system restore points. MaxSizeSpec: is the maximum size you want System Restore to use, example 1GBĮxample: vssadmin resize shadowstorage /On=C: /For=C: /Maxsize=1GB.ForVolumeSpec: is the drive letter, for example C. OnVolumeSpec: is the drive letter, for examaple C.Vssadmin resize shadowstorage /on= /for= /maxsize= Next, to reduce the allocated space used by Vista's System Restore, use the following command: To view the number of restore points you currently have on your Computer run the following command The maximum space allocated for System restore is 2.092 GB The output above shows space used on the C:\ drive by System Restore is 237.419 MB. Maximum Shadow Copy Storage space: 2.092 GB Used Shadow Copy Storage space: 237.419 MBĪllocated Shadow Copy Storage space: 400 MB (NOTE: if the command does not run change directories to c:\windows\system32).Īfter the vssadmin has executed you will see results similar to the following: To determine how much disk space System Restore is using, the following command can be used:įor the above command to run you must use elevated privileges:ġ – Click on the Start menu then click All Programs / Accessories.Ģ – Right Click on the Command Prompt option and from the drop down menu click on the Run as Administrator option. System Restore uses up to 15% of each NTFS drive on the system that is at least 1 GB. Vista's System Restore keeps two types of restore points, one for shadow copies of files used to restore previous versions of a file that you want to recover due to corruption or deleting of files, and the typical restoring of a previoius saved system state. Unlike System Restore in Windows XP, you could adjust the amount of disk usage from XP's Ststem Restore utility. This has become one of the biggest problems with users who made the switch to Windows Vista and have limited disk space.
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