My first 'portable' was the size of a sewing machine and had a 300 baud modem. Pager goes off in the middle of the night, set up the portable, phone in coupler, dial up. Enter user id and password, watch 80 x24 paint, watch the next screen paint, log out, phone back on wall, drive 30 minutes to data center to triage. I can semaphore flag faster than 300 baud.
I remember getting giddy when I discovered my IBM 50 or 60? had an 8 MB D: drive since DOS only supported 32MB partitions
386 memory managers, loading drivers into hi mem
Good times, not missed at all
It still boggles my mind that Windows still does not have a 2-pane file explorer, those existed in DOS days. First app on a new pc is Altap Salamander -
https://www.altap.cz/salamander/downloads/ , second app is SlickRun -
https://bayden.com/slickrun/