Need a budget price USB HD for my 2009 iMac - will use for back-up purposes only e.g.prior to reinstalling Yosemite . Looked at TZ UK previous posts but all rather old and nothing recent. John Lewis lists a Toshiba Stor E slim £59.95 but specs state Mountain Lion compatible - would it work with Yosemite and is it worth buying? Any other recommendations? Any to avoid?
Thanks
dunk