Date: Sat, 19 Oct 1996 07:34:43 +1000 From: Bruce Evans <bde@zeta.org.au> To: freebsd-hackers@FreeBSD.org, j@uriah.heep.sax.de Subject: Re: 2.2-961014-SNAP install problem Message-ID: <199610182134.HAA21401@godzilla.zeta.org.au>
next in thread | raw e-mail | index | archive | help
>> No, `C' is not recorded anywhere (except possibly for MFM/ESDI/IDE
>> disks), there is no requirement that C*H*S <= the medium capacity,
>> and no advantage for the dangerously dedicated mode.
>
>Everything else than dangerously dedicated mode insists on wasting a
>bunch of sectors in the first ficticous cylinder,
^^^^^^^^ track
>and all the sectors
>after the last complete ficticous cylinder, for DOS compat sake.
No reason to do that except for DOS partitions.
>> (which is normally larger than anything that could be
>> >expressed as a product C*H*S where all the elements are integer
>> >numbers).
>>
>> No, medium sizes are normally smaller than 1024*255*63 (almost 8GB).
>
>That wasn't the question. It's only that the integer product of C*H*S
>is <= <total number of blocks on drive>. Since the installation tool
>uses C*H*S as the number of blocks on drive, it wastes space. (Newfs
If the installation tool is that limited, then it can probably be
folled by saying that there is one (or one thousand) more cylinders
than there are. This works unless the installation tool attempts
to verify that sector C*H*S-1 exists. Just be careful not to put
slices or partitions above the last real sector.
Bruce
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199610182134.HAA21401>