Re: sector size of 2068?

Steffen Grunewald (steffen@gfz-potsdam.de)
Fri, 28 Aug 1998 13:35:40 +0200 (MET DST)

Peter wrote:
|>
|> Asside from that, the answer was to put together a 486 and have adaptec's
|> controller have fun with it. Works fine, but i'm a little bit perplexed
|> as to its result. It being a "9.1 Gig scsi drive". The drive is a
|> ST410800W in case you're wondering, and the full details are at
|> (http://www.seagate.com/support/disc/specs/st410800w.shtml).

There has been a narrow version of this drive, too.

|>
|> What interests me about the resulting behavior is what fdisk says:
|> Device Flag Begin Start End Blocks Id System
|> /dev/sdb1 0 0 4923 8839246+ 83 Linux native
|> /dev/sdb3 0 0 4923 8839246+ 5 Whole disk
|>
|> Is 8.43 gig really how much is left when you partition off a 9.09 gig
|> drive? That just doesn't seem sane. Somebody tell me if I'm crazy.

That's (8839246*2+1)*512 bytes = 9051388416 (plus something less than
one cylinder with this geometry). Given that drive manufacturers
count 10^9 bytes to be one gig, it's really a 9.1 GB drive :-(
If you count 2^10 = 1K however, it's a 8632 MB drive - or 8.43 GB.

Now take one of those 46.4 GB disks and do the same number shuffling :)

Steffen

-- 
Steffen Grunewald = steffen(at)gfz-potsdam.de = fax +49-331-288-1266
My opinions are mine. You can rent them. Just ask me for prices  :-)
"Art is a lie which makes us realize the truth"   -    Pablo Picasso


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