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To adjust two rasters so that they have the same size and dimensions, you can use a raster processing software or GIS tool that supports raster alignment or resampling. Here are the steps you can follow:

1. Open the two rasters in the raster processing software or GIS tool.
2. Check the properties of each raster, including their cell size, extent, and coordinate reference system (CRS).
3. Determine which raster you want to use as the template or reference for the other raster.
4. If the two rasters have different cell sizes or extents, use the resampling or alignment function to adjust the cell size and extent of the raster you want to align to the reference raster. You can choose different resampling methods such as nearest neighbor, bilinear, cubic, etc., depending on your preferences and the type of data.
5. If the two rasters have different CRS, you should reproject one of the rasters to match the CRS of the other raster. You can use the projection or transformation functions in the software or tool to do this.
6. After adjusting the size, extent, and CRS of the two rasters, you can use any further processing, analysis, or visualization functions that require the rasters to be aligned.