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Date:      Tue, 19 Apr 2016 00:50:45 +0900
From:      maruyama@ism.ac.jp (=?iso-2022-jp?B?GyRCNF07M0Q+PjsbKEI=?=)
To:        Naomichi Nonaka <nao@enuenu.org>
Cc:        freebsd-users-jp@freebsd.org
Subject:   [FreeBSD-users-jp 95778] GPT and EFI
Message-ID:  <ydlzisqhq5m.fsf@indra.ism.ac.jp>
In-Reply-To: <57143EE5.1050108@enuenu.org> (message from Naomichi Nonaka on Mon, 18 Apr 2016 10:56:53 %2B0900)

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$BE}7W?tM}8&5f=j$N4];3$G$9!#(B

$BH/C<$H$J$C$?LdBj$O4{$K2r7h$7$?$H;W$$$^$9$,!"(BSubject$B$rJQ$($F(B GPT $B$H(B EFI$B$N(B
$B4X78$K$D$$$F9M$($F$_$?$$$H;W$$$^$9!#;d$,5$$K$J$C$?$N$OLnCf$5$s$N(B

>GPT$B%9%-!<%`$O85!9(B(U)EFI$B5,3J$N0lIt$H$7$F:n@.$5$l$?$N$G$9$,!"8=>u$G$O(B
>Legasy BIOS$B$H(BGPT$B$NAH9g$;$b(B($B$NJ}$,!)(B)$BB?MQ$5$l$F$*$j!"(B

$B$H$$$&ItJ,$G$9!#$=$N$"$?$j$NNr;K$OCN$i$J$$$N$G!"$^$:$O2?$+;2>H$G$-$kJ88%(B
$B$,$"$l$P$465<(4j$$$?$$$H;W$$$^$9!#(B

$B$=$l$O$H$b$+$/!"(BGPT $B$r>/$7CN$C$F!"(B UEFI $B$N$3$H$OKX$ICN$i$J$$;d$+$i8+$k$H!"(B
$BNr;K$O$I$&$G$"$l!"(BGPT$B$O$3$l$^$G9-$/Ia5Z$7$F$$$?!V(B(Microsoft slice)+(BSD
label)$B!W$NJ}<0(B($B:#$G$O(BMBR$B%9%-!<%`$r8F$V$h$&$K$J$C$?$,(B)$B$,$O$i$s$G$$$?LdBj(B
$B$r2r7h$7$F$*$j!"Nc$((B UEFI$B5,3J$,L5$/$F$b!"(BUEFI$B%b!<%I$,$J$/(BBIOS boot $B$7$+(B
$B$G$-$J$$%^%7%s$G$"$C$F$b!"(BMBR$B$O<N$F$F(BGPT$B$K0\9T$9$Y$-!"$H;W$($k$N$G$9!#$G(B
$B$9$+$i!"(B

>$B8=>u$G$O(BLegasy BIOS$B$H(BGPT$B$NAH9g$;$b(B($B$NJ}$,!)(B)$BB?MQ$5$l$F$*$j!"(B

$B$O5/$k$Y$/$7$F5/$C$F$$$k8=>]$G$"$C$F!"$=$3$K4:$($F(B UEFI boot $B%b!<%I$NOC(B
$B$r;}$A=P$9I,MW$b$J$$$7!"$^$?(B GPT$B$N5,3J$O(BLegacy BIOS, UEFI$B$N5/F0%b!<%I$H(B
$B$OFHN)$N5,3J$G$"$k$Y$-$@$H;W$&$N$G$9!#(B

$B3'MM$N$40U8+$r;G$$$?$$!#(B

$B$J$*!"0l1~!V(B(Microsoft slice)+(BSDlabel)$B$NJ}<0$,$O$i$s$G$$$?LdBj!W$NCf$G(B
$BFC$K=EBg$J$b$N$r$3$3$K=q$$$F$*$/$H!"(B

1. Microsoft slice $B$N%"%I%l%9;XDj$O(B 32$B%S%C%H$G$"$C$F!"(B2TB$B$r1[$($k%9%H%l!<(B
  $B%8$G$O!"%"%I%l%9;XDj$,IT2DG=$K$J$k!#(B(/usr/include/sys/diskmbr.h $B0?$$$O(B
  /usr/src/sys/boot/i386/boot0/boot0.S $B;2>H(B)

2. stage 1 boot code $B$NBg$-$5$,(B 15 sector(7680$B%P%$%H(B)$B$K@)8B$5$l$F$$$F!"(B
  $B<+M3$,8z$+$J$$!#(B

3. (2$B$H<B<AF1$80UL#$@$,(B)boot manager $B$rFCDj$N(BOS$B%Q!<%F%#%7%g%s$NCf$KKd$a(B
  $B9~$^$6$k$rF@$:!"$=$N(B OS$B%Q!<%F%#%7%g%s$r:o=|$9$k$H!"B>$N(BOS$B%Q!<%F%#%7%g(B
  $B%s$^$G5/F0:$Fq$K$J$k!#(B

--------
$B4];3D>>;!wE}7W?tM}8&5f=j(B



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