Hardware woes
Sep. 20th, 2015 08:42 pmI've discovered that much of the truly horrible recent performance of my iMac is not the result of age and resource deprivation as I'd supposed, but rather consequent of a gradually failing hard disk. Unfortunately, I learnt this under less than ideal conditions: the machine detected problems partway through an upgrade and refused to continue installing the new OS whilst also declinng to boot the old installation, leaving me in something of a limbo.
Unable to recover the system with either Disk Utility or a single user mode fsck, I've been reduced to runing my system off an SD card while I consider how to back up and move my old data — because, of course, my Time Machine backup turns out to have been almost a year out of date. Annoyingly using an SD card as my boot volume actually seem to be greatly preferable to running of the internal hard disk: both much quieter and much quicker. Which brings me back to my original realisation: most of my recent performance problems seem to have been down to failing IO operations...
Unable to recover the system with either Disk Utility or a single user mode fsck, I've been reduced to runing my system off an SD card while I consider how to back up and move my old data — because, of course, my Time Machine backup turns out to have been almost a year out of date. Annoyingly using an SD card as my boot volume actually seem to be greatly preferable to running of the internal hard disk: both much quieter and much quicker. Which brings me back to my original realisation: most of my recent performance problems seem to have been down to failing IO operations...