systemd migration, some questions esp. rc.local

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https://bbs.archlinux.org – HelloAlthough I'm not a fan of dzillions of config files I decided to try systemd. Most of the things seem to work fine but some things are unclear to me:1.) Things are working fine with rc-local.service, however I tried to make unit files for my entries in rc.local:hdparm -B 254 /dev/sdaMy unit file:[Unit] Description=hdparm control script After=local-fs.target [Service] ExecStart=/usr/local/sbin/hdparm.sh [Install] WantedBy=multi-user.targetHere I'm not sure about the After=local-fs.target. AFAIU I've to make sure that /dev/sda is ready before using hdparm. I read in another (HowTos)