I have a mid 2010 Imac running Yosemite and yesterday I tried to upgrade to High Sierra. The download seemed to go fine but the installation did not. I go the following message
"MacOS could not be installed on your computer. The installer resources could not be found... Quit and restarts...
I have a 2009 IMac with 9Gb of RAM and the intel Core 2 Duo chipset. I have a wireless aluninium key board and the old wireless mouse. I am told that my mouse cannot be replaced by the new keyboard or mouse as the computer does not support the right USB level or words to that effect.
Some of...