Could I damage a hard drive if I force it to shut down while booting?

[Rodion15]

I heard that you can damage a hard drive while it's being written to. However, while the computer is booting from it (either the internal hard drive or booting off an USB external one), the computer is reading from it, so it shouldn't be damaged if I press the power button to force a shut-down, right?

Can the hard drive be written to while booting in any way?
I'd welcome some explanatory website.

 

[iXeon]

interrupting the HDD job would not make a damage. but for mechanical disks, shock while working is not good although some of brand HDDs have systems to resist from the shock more than others.and outage if it repeats many times could damage the HDDs engine that moves the disks and if it happens many times could make a noise in system.the other damage is external electrical shock , in that case there is a little voltage inside your case and would interrupt the HDDs job by additional voltage to some part of it.
but in flash based drives non of this matters.the only thing that could damage the flash is extra voltage because a flash based drive works with additional voltage to read and write information on IC and an extra voltage would damage the info that has been stored in it.

 

[Rodion15]

thanks for your answer, I've edited my post a little to make it more clear, it was a bit hurried.
I meant to ask if a hard drive could be damaged during boot if you force a shutdown for example pressing the power button a few secs, since I understand the disk or ssd is being read from, and not written to.

Cheers