@dandylover1 I remember getting the unable to open file message back in the day. The new notepad on Windows 11 can open files of up to two gigs. Are you sure you're not using notepad++ or one of the modified versions of notepad that were floating around?
Here's the archive that applies to Windows 3.1 and Windows 95: jeffpar.github.io/kbarchive/kb/059/Q59578/
And here's another discussion of the limitation in Windows XP from 2016: answers.microsoft.com/en-us/windows/forum/all/what-is-the-size-limit-for-notepad/b6f2cc3e-fcf4-4edc-9906-ae78d3968e8e
@fastfinge@interfree.ca