1 After recovering files, you must reinstall or reset Windows 8/8.1, install drivers, apps and programs, and then copy your documents from the backup media you used earlier. 2  This is the hard way in case Windows 8, 8.1 or 10 does not start at all.ow comes the very important part for non-OEM Windows 8 and 8.1 users! Always leave the Keep Windows settings, personal files and applications option selected to perform a non-destructive reinstall of Windows 8 or 8.1.
Positional accuracy is the quantifiable value that represents the positional difference between two geospatial layers or between a geospatial layer and reality. An example of this is the comparison of the location of roads in a feature class versus their location in a TIFF image.f the feature class and the TIFF are using the same projection, you can assess the positional difference between the feature class and the TIFF. The Positional Accuracy Assessment tool (PAAT) allows you to compare two items to assess a data layer's accuracy in relation to a reference layer of known or unknown accuracy.
It is also worth defining the difference between accuracy and precision: 1  GPS accuracy: The accuracy refers to the degree of closeness the indicated readings are to the actual position. 2  GPS precision: Is the degree to which the readings can be made.3  The smaller the circle of unknown the higher the precision.PS accuracy is far greater than anything that was previously available, and it is sufficiently accurate for most applications. However there are GPS errors that have been significant for some applications, and much work has been undertaken to reduce the level of GPS errors to a level where they are insignificant.