The install media may become corrupted for various reasons, e.g. the download may cut off leaving an unfinished file. To verify that your media is valid, we provide checksums with all downloads.
If this does not match, with the MD5 checksum run against the downloaded media, then it has not downloaded correctly and should be downloaded again.
e.g. when downloading Spectrum 10.2.2 from support.ca.com we also provide the following file as an additional download.
"CA SPECTRUM 10.2.2 CHECKSUMS.XLSX"