From owner-FreeBSD-users-jp@jp.freebsd.org  Fri Sep 25 22:29:05 1998
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Date: Fri, 25 Sep 1998 22:28:58 +0900 (JST)
Message-Id: <199809251328.WAA14425@asmodeus.nakamura.uji.kyoto.jp>
To: FreeBSD-users-jp@jp.freebsd.org
In-Reply-To: Your message of "Fri, 25 Sep 1998 17:38:24 JST".
	<199809250830.RAA17894@hipro.hitachi-hipro.co.jp>
From: knak@mahoroba.ne.jp (Kan Nakamura)
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Subject: [FreeBSD-users-jp 33292] Re: FreeBSD
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| FreeBSD$B$N%G%#%9%/$N%-%c%i%/%?%9%Z%7%c%k%U%!%$%k(B($B$?$H$($P(B/dev/rwd0s2e$B$H$+(B)
| $B$K(Broot$B$G(Bwrite()$B$rH/9T$9$k$H(Bread-only filesystem$B$@$H$$$C$F$O$8$+$l$F(B
| $B$7$^$$$^$9!#(B
| ls -l$B$G8+$k$H(Broot.operator$B$O(Brw$B$H$J$C$F$$$k$N$G$9$,!"$J$<=q$-9~$a$J$$$N$G(B
| $B$7$g$&$+(B?

$B%G%#%9%/%-%c%i%/%?%G%P%$%9$=$N$b$N$K=q$-9~$a$J$$$N$G$O$J$/!"(B
$B=q$-9~$a$J$$ItJ,$,$"$k$N$G$O$J$$$G$7$g$&$+!#(B
man 4 sd ($B$^$@(B da $B$K$J$C$F$$$J$$$N$M(B)$B$N(B iocontrol $B$N=j$K(B
  DIOCWLABEL  Enable or disable the driver's software write protect of the
    disklabel on the disk.
$B$H$+$"$k$N$G!"$J$s$+0BA4AuCV$,$D$$$F$$$k$h$&$G$9!#(B

$B<j85$N%G%#%9%/$G;n$7$F$_$k$H!"(B
    asmodeus# dd if=/dev/zero of=/dev/rda1s1a bs=1k count=1000
    dd: /dev/rda1s1a: Read-only file system
    1+0 records in
    0+0 records out
    0 bytes transferred in 0.001151 secs (0 bytes/sec)
    asmodeus# dd if=/dev/zero of=/dev/rda1s1e bs=1k count=1000
    1000+0 records in
    1000+0 records out
    1024000 bytes transferred in 3.521639 secs (290774 bytes/sec)
$B$H$J$j$^$9!#$"$l(B? $B=q$-9~$a$J$$$N$O%G%#%9%/%i%Y%k$G$O$J$/!"%9%i%$%9(B
$B%F!<%V%k$+$J(B?

$B$H$3$m$G!"$3$N%G%#%9%/$O:G=i$N%$%s%9%H!<%k;~$K!"(B1$B%;%/%?$?$j$H$b;D$5$:(B
FreeBSD$B$K;HMQ$9$k$H$$$&@_Dj$KLB$o$:$7$?$N$G$9$,!";D$7$F$*$$$?J}$,(B
$B$$$$$h!"$H$+$$$&Cm0U$rJ9$$$F$$$?$i!"(B/dev/rda1s1a $BA40h$K$b=q$-9~$a$?$N(B
$B$+$J$!!"$H$U$H;W$$$^$7$?!#(B
                                                          $BCfB<(B@$B1'<#(B.$B5~ET(B
