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now i see it

macrumors G4
Jan 2, 2002
11,241
24,230
In the future, for anyone with an internal SSD, partition the drive into 3 parts. Two small partitions that will hold an OS install each (maybe 60 gb ea) and the third partition will be for all documents.

One of the small partitions will be your boot drive that will hold your current OS. The 2nd small partition is for NEW OSes that you can install and try out "risk free". Doing it this way gives you an instant fallback plan if a new OS is crap. Or if you find the new OS is a keeper, it can become your new boot drive and the first partition will then be reserved for the NEXT new OS. No trauma. No big surprises. Easy Peasy.

In the past, before SSDs, partitioning a spinning hard drive meant that each subsequent partition would be slower than the previous one because it would reside closer to the inside of the spinning platter. But with SSDs it doesn't matter. All partitions are equally fast.
 
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fivenotrump

macrumors 6502a
Apr 15, 2009
660
450
Central England
I tested Sierra on a clone first and was happy. All three upgrades went without a hitch. Do not overlook the security aspect of having the latest OS. While it is true that there are security updates for prior releases, Sierra also includes security improvements that are unavailable to older OSs. One such is SIP: while complained about by folks running older software, it is IMNSHO a significant improvement – for a start it disables the notorious Dropbox hack.
 
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