Logs- Where does it record?

RouterOS General
1

/system logging action add name=hdd target=disk
/system logging add topics=firewall action=hdd

I have written those things, but what part of disk(I’m using X86, I guess disk means harddisk in x86 computers)
So, where is the place that records those logs to hdd?

2

log print buffer=disk
show the logs saved on disk.
Logs are saved to disk, you are not able to influence the place, where logs are saved.

3

Could I write a script which uses that code every 6 hours.