2017-01-01T11:47:11+00:00 Zend_Feed_Writer https://www.augwessex.org.uk/discussions/view/1398 AUGW info@augwessex.org.uk https://www.augwessex.org.uk/ 2016-12-31T15:48:54+00:00 https://www.augwessex.org.uk/discussions/view/1398#6576 Michael Corgan info@augwessex.org.uk https://www.augwessex.org.uk/ My iMac internal hard drive is in two partitions, one of which runs Snow Leopard, the other El Capitan. Is it possible to partition an external hard drive and use two partitions as Time Machine back-ups, one for each iMac partition? 2017-01-01T00:51:21+00:00 https://www.augwessex.org.uk/discussions/view/1398#6578 Tony Still info@augwessex.org.uk https://www.augwessex.org.uk/ I don't see why not. My TM machine has two partitions, one is dedicated to TM and the other has never been offered to TM but just has whatever I choose on it. You wouldn't be doing anything fundamentally different to that - each OS would have no reason to back-up to a partition that it not been offered. 2017-01-01T09:55:37+00:00 https://www.augwessex.org.uk/discussions/view/1398#6579 Eric Jervis info@augwessex.org.uk https://www.augwessex.org.uk/ I run El Capitan on one of the four partitions on my external drive, and TM on another. 2017-01-01T11:47:11+00:00 https://www.augwessex.org.uk/discussions/view/1398#6580 Mick Burrell info@augwessex.org.uk https://www.augwessex.org.uk/ I think you'd need to tell the SL backup NOT to back up EC and vice versa otherwise both backups would backup everything.