[Info-vax] disk sizes

[Johnny Billquist]

On 2011-02-20 14:57, Phillip Helbig---undress to reply wrote:
> Standard hard-disk sizes are 1.07 GB, 2.1, 4.3 (or sometimes the more
> precise 4.29---one rarely sees the more precise 2.15).  8.6 (8.59) is
> also relatively common.  This is clear, since 1024^3=1073741824 and then
> one has 2, 4 or 8 times this.  So far, so good.  After that, sizes tend
> to be 9.1, 18 (18.2---though 17 (roughly twice 8.6) also exists), 36
> (36.4), 73 (72.8) and 146.  These are also powers of two times the new
> basic size, but where does the 9.1 basic size come from?

Are you aware that disk manufacturers tend to give disk sizes in powers 
of 10, not power of 2, as this makes the disks look a bit larger?

Besides, the disk geometry and sizes almost never means you end up with 
something even divisble by any "sensible" numbers, what are you trying 
to figure out here?

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol