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Message-Id: <20040712.162803.08319754.ishizuka@ish.org>
To: FreeBSD-users-jp@jp.FreeBSD.org
From: Masachika ISHIZUKA <ishizuka@ish.org>
In-Reply-To: <040712122314.M0132063@flame.hirata.nuee.nagoya-u.ac.jp>
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	<040712122314.M0132063@flame.hirata.nuee.nagoya-u.ac.jp>
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Date: Mon, 12 Jul 2004 16:28:03 +0900
X-Sequence: FreeBSD-users-jp 80132
Subject: [FreeBSD-users-jp 80132] Re: DVD-RAM 4.7GB media
 =?ISO-2022-JP?B?GyRCJE4bKEI=?= geometry
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>> $B$H$$$&46$8$J$N$G(B drive $B$+$i(B 2236704 $B$rJV$7$F$$$k$h$&$G$9!#$G(B
>> 2236704 x 2048 = 4580769792 $B$J$N$G!"(B1GB = 10^9 B $B$G7W;;$7$F$b(B
>> 4.7GB $B%a%G%#%"$O(B 4.58GB $B$7$+$J$$$3$H$K$J$C$F$7$^$&$N$G$9$,!"(B
>> $B$3$&$$$&$b$N$J$N$G$7$g$&$+!)(B
>
> http://www.osta.org/technology/dvdqa/dvdqa6.htm $B$K$h$j$^$9$H(B, $B%G%#(B
> $B%U%'%/%H4IM}$N4X78$G(B 226,492,416byte (216MB) $B$[$I$b$C$F$$$+$l$k$h(B
> $B$&$G$9(B.
> # $B$`$&(B, $B?t;z$,9g$o$J$$$J$!(B.
> 
> $B$^$"(B, $B$H$K$+$/!VA4It;H$($k$o$1$G$O$J$$!W$H$$$&$3$H$@$=$&$G$9(B.

  $B>.LnMM(B

  $B@PDM!w?yJB$G$9!#(B
  $B5.=E$J>pJs!"$"$j$,$H$&$4$6$$$^$9!#(B
  $B$&!<$`!"$H$$$&$3$H$OK\Ev$O(B 2295072 sectors $B$"$kLu$G$9$M!#(B
  (2295072-2236704)x2048 = 119537664 $B$J$N$G(B $BBeBX%;%/%?MQ$K(B 114MB
(1MB = 2^20 B) $B<h$i$l$F$k$3$H$K$J$k$1$I!"65$($F$$$?$@$$$?;qNA$NH>(B
$BJ,DxEY$J$N$G!"B;$7$?$s$8$c$J$/$FF@$7$?$H9M$($k$Y$-$J$N$+$J$!!#(B
  2.5% $B$bBeBX%;%/%?$C$F!"=}$@$i$1$K$J$C$F$b$^$@;H$($k$h$&$K$C$F$$(B
$B$&G[N8$J$N$+$J$!!)(B

$B!t(B DVD-RAM $B$H(B DVD-R/RW $B$H(B DVD+R/RW $B$C$FHyL/$K%;%/%??t$,0[$J$k$s$G(B
  $B$9$M$'!#$J$+$J$+1|$,?<$/$FFq$7$$$b$N$G$9$M!#(B
