Depending on the age of the drive, it may not have SMART. Also, you can't enable it in the drive. The drive manufacturer's set this. If you think your drive has SMART, then enable it in your bios. You can also use a program such as speedfan to check the smart status of the drive.
I have done the RTFM thing (like some of the rest of you :-)), and checked the BIOS on startup, both when I built this particular computer and many times since. I am quite experienced with this stuff, but this one eludes me.
Thank you so much. I had the manual on my desk and so I checked immediately I read your comment. I just had not gone to the descriptions for individual drives in the BIOS, and ASUS tech support could not point me to this section! Nor could I find that page in the manual, despite scanning it many times. By chance I have just had lunch with an expert on this subject and he had told me that S.M.A.R.T. is a feature of many hard drives, rather than of the BIOS itself in this case. Hence, no off/on option at that level. Thanks again for the pointer.
Yes, and as you pointed out for me, so does mine although I could not find it. I think the reason was that I was not thinking in terms of it being something built into the drive rather than the BIOS itself, or its related utilities. I gather this is now a common accompaniment of new drives.
When we looked at the drive with Linux, the same message appeared at Post, telling us
Hard Disk: S.M.A.R.T. Status BAD. Backup and Replace.
The drive was coming up sometimes in the BIOS (and therefore in Windows) and so I had performed a (secondary) backup on one of those occasions. Chkdsk hung every time, and a format from the command prompt would not complete. In Linux, we could see the files listed but not access them, nor could we format the drive. Every attempted maneuver resulted in an Unhealthy Drive notice. It has now been declared officially dead or mortally wounded, and that is that.
I have been working with computers since before PCs arrived, programming etc. (in a physiology lab for the first experiences) and for many years have been building my own; my current desktop includes four internal drives and four more in a Drobo box. This is the first time I have had this experience (with or without SMART technology). I guess it had to happen sooner or later.
Thanks again. No need for you to attend the memorial service.