Almost there. You've nearly assembled the salad.

// @kdfrawg

salad.jpg

Seagate GoFlex USB 3.0 & FireWire 800 adaptors do not support S.M.A.R.T. status checking whereas the GoFlex Thunderbolt 1 adaptor does.

Have to bear that in mind when using ext HDs.

A tale of two Seagate thingies. I have two Seagate GoFlex SATA interface devices which I can use to mount bare 2.5-in HDs. One connects via USB 3.0, the other via Thunderbolt 1.
However, in DiskUtility, any drive connected via T/bolt shows as S.M.A.R.T. verified, whereas the USB 3.0 adaptor shows S.M.A.R.T. as unsupported.
This would suggest something amiss with the USB 3.0 jigger. Somewhere I have a similar adaptor that connects via FireWire 800 but I can't find it at present.

This is most intriguing: I have two HDs, both recovered from Windoze laptops. Both mount OK on the MBA. With both drives, when I connect via the Seagate GoFlex Thunderbolt/SATA adaptor, TechTool Pro announces both are failing their S.M.A.R.T. STATUS. In these cases, TTP shows the drives in its test application window.
Yet when both allegedly dodgy drives are connected via a Seagate GoFlex USB 3.0 adaptor, TTP doesn't show them in the test app window & the TTP monitor app doesn't detect anything wrong with them.
I'm about to try via a different connection, this time a Kanex Thunderbolt-to-USB 3.0 adaptor.

Poop. One of my ext HDs used to clone the MBA is failing its S.M.A.R.T. testing, according to TechTool Pro 9. Still, I never paid for the drive, it was recovered from a trashed PC laptop I found on the roadside about 9 years ago.

right this minute I'm chowing down on some sourdough rye toast with cheddar, sliced turkey & tomato on it. With a cup of tea.

//

Cola flavoured ice block ingredients: water, sugar, flavour, acidity regulator & colour.

"Gluten-free!" Proclaims the packaging.

Fuck me swinging! Why the fuck would anyone imagine it might contain gluten?

Um, wot's IAC in this context?

// @kdfrawg