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Date: Thu, 10 Dec 1998 23:48:18 +0900 (JST)
From: Noriyuki Soda <soda@sra.co.jp>
Message-Id: <199812101448.XAA26075@srapc342.sra.co.jp>
To: FreeBSD-users-jp@jp.freebsd.org
Reply-To: FreeBSD-users-jp@jp.freebsd.org
Precedence: list
X-Distribute: distribute version 2.1 (Alpha) patchlevel 24e+981115
X-Sequence: FreeBSD-users-jp 36298
Subject: [FreeBSD-users-jp 36298] Re: What is raw device?
Errors-To: owner-FreeBSD-users-jp@jp.freebsd.org
Sender: owner-FreeBSD-users-jp@jp.freebsd.org

> >> > >>$B$^$?!"$3$l$C$F$$$o$f$k!V(Braw$B%G%P%$%97PM3$G=q$-9~$s$G$$$k!W(B
> >> > >>$B$H8@$C$F$$$$$N$G$7$g$&$+!#(B
> >> 
> >> $B$&$A$+$o$5$s(B:
> >> > $B$=$&$G$9!#(B
> >> 
> >> $BBg@P$5$s(B:
> >> > $B0c$$$^$9!#(Braw$B%G%P%$%9$G=q$-9~$`>l9g$O!"(Brfd0c$BEy$r;HMQ$7$^$9!#(B
> >> 
> >> $B$&!"$40U8+$,$o$+$l$F$*$j$^$9$,!D(B(^^;
> 
> $B$^$!$3$NJU$j$O2r<a$N0c$$$+$J!)$H;W$$$^$9(B($B;d$N8m2r$+$b(B...)$B!#(B

$B$&$`$`!#!V(Braw $B%G%P%$%9!W$H8@$C$?>l9g$K$O!"2r<a$N0c$$$H$$$&M>CO$O$J$$$H(B
$B;W$$$^$9!#Bg@P$5$s$,@5$7$$$G$9!#(B

> $B;d$NJ}$O85!9%Y%?=q$-$H$$$&E@$O(Braw$BE*$G$9$1$I!"(B/dev/fd0c$B$O$=$&$$$&MxMQL\E*(B
> $B$GDs6!$5$l$F$$$k$o$1$8$c$J$$$N$G(Braw$B%G%P%$%9$8$c$J$$$H2r<a$7$^$7$?!#(B

$B$3$l$,@5$7$$$G$9!#(B
/dev/rfd* $B$,(B raw $B%G%P%$%9$G$"$j!"(B/dev/fd* $B$O!"$=$&$8$c$"$j$^$;$s!#(B

raw $B%G%P%$%9(B (floppy $B$N>l9g(B /dev/rfd*) $B$KBP$9$kF~=PNO$O!"%G%P%$%9$KBP(B
$B$7$FD>@\9T$o$l$^$9!#%+!<%M%k$K$h$k%P%C%U%!%$%j%s%0$O9T$o$l$^$;$s!#$3$N(B
$B$?$a!"F~=PNO$9$k:]$K$OI,$:!"%G%P%$%9$N5vMF$9$k%V%m%C%/%5%$%:$NG\?tC10L(B
$B$G9T$&I,MW$,$"$j$^$9!#$^$?!"=q$-9~$_$N%7%9%F%`%3!<%k$,40N;$7$?;~$K$O!"(B
$B<B:]$K%G%P%$%9$X$N=q$-9~$_$b=*N;$7$F$$$^$9!#(B

$B%V%m%C%/%G%P%$%9(B (floppy $B$N>l9g(B /dev/fd*) $B$KBP$9$kF~=PNO$O!"%+!<%M%kCf(B
$B$N(B buffer cache $B$G$$$C$?$s!"%P%C%U%!%j%s%0$5$l$^$9!#$3$N$?$a!"%G%P%$%9(B
$B$N%V%m%C%/%5%$%:$NG\?t$G$J$/$F$b!"F~=PNO$G$-$^$9!#$?$@$7!"(Bbuffer cache
$B$G=q$-9~$_$b%-%c%C%7%e$5$l$F$$$k$N$G!"%3%^%s%I$,=*N;$7$F$b!"%U%m%C%T!<(B
$B$X$N=q$-9~$_$O=*N;$7$F$$$k$H$O8B$j$^$;$s!#(B($B$H$$$&$+!"IaDL$O=*N;$7$F$J$$(B)

$BIaDL$O!"E,@Z$J(B (== $B==J,Bg$-$J(B) $B%V%m%C%/%5%$%:$r;XDj$9$l$P!"(Braw $B%G%P%$(B
$B%9$r;H$C$?F~=PNO$NJ}$,9bB.$G$9!#$3$N$3$H$H!"=q$-9~$_$N40N;$rJ]>c$G$-$k(B
$B$3$H$+$i!"K\3JE*$J%G!<%?%Y!<%9$G$O!"(Braw $B%G%P%$%9$r;H$&$N$,IaDL$G$9!#(B
($B$A$J$_$K(B Linux $B$K$O(B raw $B%G%P%$%9$,$"$j$^$;$s!#(BLinux $B$NBg$-$J<eE@$N0l$D(B)

> $B$?$@>/$J$/$H$b%V%m%C%/7?%G%P%$%9$K(Btar$B$G%Y%?=q$-$9$k$N$OE,@Z$G$O$J$$$G$9!#(B
> $B$=$N0Y$K$A$c$s$H%-%c%i%/%?7?%G%P%$%9$,Ds6!$5$l$F$$$k$o$1$G$9$7!#(B

$B$O$$!#(B
$B$^$"!"(B/dev/fd* $B$K=q$$$F$b!"(Bbuffer cache $B$,A4$F=q$-=*$o$k$N$rBT$F$P(B
(sync $B%3%^%s%I$r<B9T$7$F!"%U%m%C%T!<%G%#%9%/$,F0$-=P$7!"Dd;_$9$k$^$G(B
 $BBT$F$P(B) $B$$$$$+$b$7$l$^$;$s$,!"IaDL$O(B raw $B%G%P%$%9$r;H$&J}$,E,@Z$G$9(B
$B$h$M!#(B
--
soda
