Setting Trim _AFTER_ a New Install

[mfv]

Hello,

I've recently installed FreeBSD r10.1 using bsdinstall and then loaded
a large number of programs and data.  After spending considerable time
on the installation I discovered that my SSD has TRIM which appears
to be quite useful. After some investigation I understand that it is a
simple flag that can be set after booting into single user mode.

I hope my questions are  simple:

If TRIM is enabled will it mess up the disk so that everything has to be
reinstalled?

If not, is there anything else I should be aware of?

    With thanks ...                            __o
                                             _ \<,_
    Marek                                   (+)/ (+)
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