Hacker News Reader

Or just a legacy UNIX with a lot of disks. I've seen PH-UX take over an hour to boot due to that.

(Just to be clear I meant specifically just enumerating SCSI LUNs, not fsck or anything like that)

I worked for an organization in the 1990s that ran a legacy IBM mainframe (later replaced with an AS/400). After an unplanned power outage, the disk confidence test and rebuild took over 1/2 day.

Forced upgrade on reboot, my personal favorite.

Or just waiting for thorough AV scan on boot.