It could be called an update, but I pressed an old 750Gb Samsung HDD into service and installed Linux Mint Mate 18 (Sarah). The dark colours look and everything seems to work OK.
The install took a couple of hours nstead of the usual 20min because I'b wated to partition the old drive to keep a usable windows install + data, and as the disc was a little fragmented there was a lot of file relocation going on. Also the codecs etc used for audio & movie playback weren't included on the disc for the first time I can remember, and they seemed to take about 20min to download even before the great disc shuffle had started. There were times when I wondered whether the install had failed, but there was data passing through the bus as illustrated by the light on the fron of the case, and I could feel the HDD writing when I touched the case.
One minor hiccup was having to instruct the sound card to switch outputs from the front headphone socket to the rear, using the command line and alsamixer command. I'd forgotten the need to do that last time, and it took a while to remember why sound was working.
This is planned to be a long term install, and I've been copying folders across from backup locations to the new desktop this morning, from where I'll use them. This PC used to be Ben's games machine (it's an old core 2 duo machine) and it struggles to run firefox these days, though Opera is pretty good. Likewise Chris's machine is about that age, grinding away with W10 now. She'soften frustrated because it always seems to want to download updates when she wants to use it. We may have to go to high speed broadband sooner rather than later.