Fresh USB install to reformatted SSD question

[ABC5S]

Anyone in the know.......


Sometime in the future, if I wanted to do a fresh install (Get everything back to day one) of the newer OS to an Apple MacBook SSD (Not an aftermarket SSD), would apples TRIM be included, and turned on by default, or must I do something to turn it on ? Also, would this hurt the SSD by doing a re-format and install of a newer OS (Say Yosemite) instead of a download install of the older OS from Apples site.

Thank You....

 

[Weaselboy]

With an Apple SSD, TRIM will be in by default with a new install like that. You don't need to do anything.

It won't hurt your SSD at all to format and reinstall.

You would not want to format and reinstall nine times a day as this would put unnecessary write cycles on the drive's NAND cells, but a fresh install when a new OS comes out like you mentioned will have so little impact on long term lifespan that it it not even worth considering.

 

[ABC5S]

Good to know. Always concerned that it would mess up the drive a bit making it a bit slower, but that was with much older SSD's a number of years ago.

Thank you