3 ms·

If you're seriously concerned, why not use an external drive of some sort and install Yosemite to it? (Bonus points: clone your internal disk to it first, and u

If you're seriously concerned, why not use an external drive of some sort and install Yosemite to it? (Bonus points: clone your internal disk to it first, and upgrade that.) Boot it up, test out your critical functions, and then update your main volume if it works out for you.

Nexxxeh 12y ago
Would using an external drive make it noticeably slower, making performance non-representative?
- JustSomeNobody 12y ago
  Not if you get one of these: http://www.amazon.com/Samsung-Portable-250GB-External-MU-PS250B/dp/B00RWXV8FE/ref=sr_1_1?ie=UTF8&qid=1428596708&sr=8-1&keywords=samsung+external+ssd http://www.amazon.com/Samsung-Portable-250GB-External-MU-PS2...
- tlrobinson 12y ago
  That would depend on which interface and drive technologies you use. A SSD connected via Thunderbolt would likely be faster than an internal hard drive.
- quicklyfrozen 12y ago
  This + SSD (Crucial IIRC) gives me 200+Mb/s write, 400+Mb/s read speeds: http://amzn.com/B00FCLG65U http://amzn.com/B00FCLG65U USB 3.0 is pretty fast. Without TRIM performance will probably degrade but that will take time.
markcerqueira 12y ago
You need to do the Bonus points version of your recommendation. Running an OS off an external will just make everything feel sluggish (unless you have a lightning enclosure and spare SSD laying around).