Tried to upgrade to OSX Yosemite on my Mac Mini bought this year running OSX Mavericks. It failed. When I checked for issues using Disk Utility I saw:
Disk Utility stopped repairing "Macintosh HD" Disk Utility can't repair
this disk. Backup as many of your files as possible, reformat the disk
and restore your backed-up files
This was due to the error unable to bootstrap transaction group 259092 invalid field value
So I erased all and tried an internet recovery with recovery partition. I made my wifi connection open to all, but I still get
OSX cannot be reinstalled because you are not connected to the
internet. If you connect to the internet via Wifi use the menu with
the wifi icon to select the network. Otherwise plug in an ethernet
cable.
I could plug into my wireless router I guess, but as I do not have a mobile screen for my Mac Mini I cannot see what I am doing.
Why does OSX not just connect to the wireless network as it is open? Any way to make it work? Is there an option to start with the basic OSX Recovery Package and activate wifi and then start the upgrade to the full package?
Best Answer
In the end it was a loose cable to my fusion hard disk. Apple Care fixed it. They re-attached it and now we are all good.