If you have to ask?  Then it's not safe for you, and you should trust the defaults that your top-brand-name OS and SSD have been designed for.

I haven't read the documentation for this Windows option, but I know Linux has equivalent options.  I would draw your attention to the ext4 filesystem and the "barrier" option, which is enabled by default.  Barriers ensure the consistency of the FS on power-failure by enforcing ordering between certain writes.  At least when it was first implemented, this involved forcing a flush of the write cache on the hard drive.

Only if the system as a whole is protected by a trusted UPS (i.e. a battery), and you trust the OS not to crash, then I believe it is safe to disable barriers on Linux.  [I am not a professional.  I am not your professional.  Trust me at your peril]. I suspect the Windows option is designed for the same scenario. But IMO the second criteria pushes this into the realms of carefully administered servers.

That said, the exact level of risk depends on the filesystem.  ext4 without barriers is much worse than ext3 (which didn't enable barriers by default).  So if your version of Windows is more like ext3 in this respect, you could expect to find anecdotes of people running PCs with this option disabled for many years, and not noticing any problems.

Is it safe to disable cache flushing on a SSD with "power loss protection"?
I have an alias for

alias tdA='todo -a'


I get the following in Zsh

tdA          
zsh: correct 'tdA' to 'tda' [nyae]?


How can you make Zsh not to suggest a fix for an alias?
