>The real problem came with Windows XP. By this time, recordable CDs (and, later, DVDs) were commonplace
No, CD-Rs were commonplace by the time Windows 98 came out. I think there were more burned copies of Windows 98 than there were official pressed ones at that time. The first "under $1000" CD-R drive was in 1995, and 3 years to "affordability by ordinary people" in electronics had become the norm even then.
Autorun from 1998 onward revived the spread of malware by removable media. Nobody was doing bootsector viruses on floppies anymore in 1998 because the number of people booting their machines with an OS floppy was minuscule. Autorun malware took the place of bootsector malware. It was so commonplace that it was recommended by everyone who knew anything about preventing the propagation of malware by pirated software that autorun be turned off.
In 1998.
Speaking of convenience, if a software install CDROM (you know, an official one) had an autorun.inf that didn't check to see if the software was already installed, the installer would start. If you merely wanted to pick a file off the CD, you had to cancel the install and open Explorer, rather than simply pop the disk in and browse the drive. This was even before the popularity of burned disks.
While you can say this was the publisher's fault, it illustrates the dubious value of autorun even as an installation "feature"
It took a full 10 years of autorun being a problem for it to be turned off in Vista instead of in a service pack or in 98SE and NT4. That shouldn't have happened, and autorun should now not even exist.
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BMO