Hard reset: hold the on switch uppermost for 15-30 seconds.
That’s a soft reset. I suppose the hard reset would be a format either via pc or the clip.
It’s just a reset. There really isn’t a hard or soft variety any more, especially with the newer players. In the case of the e200 series (and previous) players, a ‘soft’ reset was holding the power button down for 15 - 30 secs. Some stronger medicine, in the form of a ‘hard’ reset was possible with these players where they had a replaceable battery. Pull the back off, remove the battery and let the offending gobbledygook dissipate from the memory stores by leaving the battery out for a few minutes. Re-install the battery, and now all the bad stuff has melted away leaving your precious Sansa player a veritable virgin again.
With the newer players, non-replaceable batteries and sealed cases, a ‘hard’ reset is impossible, so there’s no need to differentiate between the two anymore.