🚀 go-pugleaf

Rebecca and Rowland <real-address-in-sig@flurbletigibbet.rhubarb.foobar>
wrote:

> Larry Stoter <LPS@teknesis.demon.co.uk> wrote:
> 
> > Rebecca and Rowland <real-address-in-sig@flurbletigibbet.rhubarb.foobar>
> > wrote:
> > 
> > snips ..
> > 
> > > Ah yes - there was me confusing `Initialise' (what HD SC Setup does) and
> > > `Erase' (which is what the Finder does).  Initialise *does* erase the
> > > data; erase doesn't.  And this is supposed to be an inuitive user
> > > interface?
> > > 
> > > Rowland.
> > 
> > Doesn't 'erase' from the Finder really erase - it does with a floppy -
> > can't say I've tried it with a HD.
> 
> Well I never - it certainly *does* erase data from a floppy disc.  I
> didn't know that - it seems the disc gets filled with F6s (1111 0110),
> aside from the bits which are filled with 0s and the other bits that
> hold useful information about the disc.  I still don't know about HDDs,
> though (I've just tried erasing a floppy and looking at it with a disc
> editor; I'm not so keen on trying the same game with a HD volume).

I've recently used `Erase' under System 6.0.8 to wipe the 20MB HD
connected to my Mac Plus.  It did the job in a handful of seconds, which
I assume means that it didn't fill the platters with a fixed pattern of
data.  Given the length of time HD SC Setup took to initialise that same
disc, I assume that it *does* wipe the data.

Rowland.

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