The old file formats which get to be unreadable just because they are "old" and the newer programs don't support them anymore is much more serious issue than ma

The old file formats which get to be unreadable just because they are "old" and the newer programs don't support them anymore is much more serious issue than many people think. I hazily remember having the Outlook PST files as the mail archives and then later not being able to recover most of the metadata of the mails, not even programmatically, as the PST was designed even before the "internet standards" were something they'd worry. GPG also removed the support for the old encrypted files and the old keys since 2.1: https://www.gnupg.org/faq/whats-new-in-2.1.html#nopgp2 https://www.gnupg.org/faq/whats-new-in-2.1.html#nopgp2 which signifies the dangers of using it in archival contexts. The disk encryption tools can be even more problematic, being dependent on the particular OS versions.