# MacOS – What do I do if the disk image data is corrupted

dmgmacos

I am trying to install Sims 3, but it opens a window saying that "The following disk images couldn't be opened because the image data was corrupted." What can I do to resolve this issue?

If you can obtain a checksum for the file, you can check it against your download by running openssl sha1 ~/path/to/download which will show the checksum for your download. Comparing the results should show if the file you downloaded matches what you should expect to download.