I have a 2012 iMac with Mountain Lion, which ever since I bought it has been prone to being sluggish, and would often freeze and virtually grind to a halt, requiring a reboot.
I have just verified the HDD in Disk Utility, and that instructed me to restart into recovery mode, and run the disk repair.
However, when I try to ⌘+R into recovery mode, it doesn't proceed further than the white Apple/spinning wheel screen.
Could it be that the recovery partition has somehow become corrupted, and if so, how can I fix it or is there be anything else at play here which I could try to cure my ails?