.\" WORD: threshold ïçÃÍ
.\" WORD: clear ¥¯¥ê¥¢¡¼
.\"
-.TH FD 4 1995-01-29 "Linux" "Linux Programmer's Manual"
+.TH FD 4 2010-08-29 "Linux" "Linux Programmer's Manual"
.\"O .SH NAME
.\"O fd \- floppy disk device
.SH ̾Á°
.SH ÀßÄê
.\"O Floppy drives are block devices with major number 2.
.\"O Typically they
-.\"O are owned by root.floppy (i.e., user root, group floppy) and have
+.\"O- are owned by root.floppy (i.e., user root, group floppy) and have
+.\"O+ are owned by
+.\"O+ .I root.floppy
+.\"O+ (i.e., user root, group floppy) and have
.\"O either mode 0660 (access checking via group membership) or mode 0666
.\"O (everybody has access).
.\"O The minor
.\"O In the following device tables, \fIn\fP represents the
.\"O drive number.
¥Õ¥í¥Ã¥Ô¡¼¥É¥é¥¤¥Ö¤Ï¥á¥¸¥ã¡¼¥Ê¥ó¥Ð¡¼ 2 ¤ò»ý¤Ä¥Ö¥í¥Ã¥¯¥Ç¥Ð¥¤¥¹¤Ç¤¢¤ë¡£
-°ìÈÌŪ¤Ë¤Ï¡¢¤³¤Î¥Ç¥Ð¥¤¥¹¤Î¥ª¡¼¥Ê¡¼¤Ï root.floppy (¥ª¡¼¥Ê¡¼ root¡¢
-¥°¥ë¡¼¥× floppy)¤Ç¡¢¥â¡¼¥É 0660 (¥°¥ë¡¼¥×¤Î¹½À®°÷¤Ç¤¢¤ë¤³¤È¤Ë
-¤è¤Ã¤Æ¥¢¥¯¥»¥¹¥Á¥§¥Ã¥¯¤¬¹Ô¤ï¤ì¤ë)¡¢¤Þ¤¿¤Ï¡¢¥â¡¼¥É 0666 (ï¤Ç¤â¥¢¥¯¥»¥¹
-¤Ç¤¤ë) ¤Ç¤¢¤ë¡£¥Þ¥¤¥Ê¡¼¥Ê¥ó¥Ð¡¼¤Ï¥Ç¥Ð¥¤¥¹¤Î¥¿¥¤¥×¡¢¥É¥é¥¤¥Ö¤ÎÈֹ桢¥³
-¥ó¥È¥í¡¼¥é¡¼¤ÎÈÖ¹æ¤òÉä¹æ²½¤·¤¿¤â¤Î¤Ç¤¢¤ë¡£¤½¤ì¤¾¤ì¤Î¥Ç¥Ð¥¤¥¹¥¿¥¤¥×
+°ìÈÌŪ¤Ë¤Ï¡¢¤³¤Î¥Ç¥Ð¥¤¥¹¤Î¥ª¡¼¥Ê¡¼¤Ï
+.I root.floppy
+(¥ª¡¼¥Ê¡¼ root¡¢¥°¥ë¡¼¥× floppy) ¤Ç¡¢
+¥â¡¼¥É 0660 (¥°¥ë¡¼¥×¤Î¹½À®°÷¤Ç¤¢¤ë¤³¤È¤Ë¤è¤Ã¤Æ¥¢¥¯¥»¥¹¥Á¥§¥Ã¥¯¤¬¹Ô¤ï¤ì¤ë)¡¢
+¤Þ¤¿¤Ï¡¢¥â¡¼¥É 0666 (ï¤Ç¤â¥¢¥¯¥»¥¹¤Ç¤¤ë) ¤Ç¤¢¤ë¡£
+¥Þ¥¤¥Ê¡¼¥Ê¥ó¥Ð¡¼¤Ï¥Ç¥Ð¥¤¥¹¤Î¥¿¥¤¥×¡¢¥É¥é¥¤¥Ö¤ÎÈֹ桢
+¥³¥ó¥È¥í¡¼¥é¡¼¤ÎÈÖ¹æ¤òÉä¹æ²½¤·¤¿¤â¤Î¤Ç¤¢¤ë¡£¤½¤ì¤¾¤ì¤Î¥Ç¥Ð¥¤¥¹¥¿¥¤¥×
(¤³¤ì¤Ï¡¢Ì©ÅÙ (density) ¤È¥È¥é¥Ã¥¯¥«¥¦¥ó¥È (track count) ¤ÎÁȹ礻¤Ç¤¢¤ë)
¤Ï¡¢¥Ù¡¼¥¹¤È¤Ê¤ë¥Þ¥¤¥Ê¡¼¥Ê¥ó¥Ð¡¼¤ò»ý¤Ã¤Æ¤¤¤ë¡£¤³¤Î¥Ù¡¼¥¹¥Ê¥ó¥Ð¡¼¤Ë¤½¤Î
¥³¥ó¥È¥í¡¼¥é¡¼¾å¤Î¥É¥é¥¤¥Ö¥Ê¥ó¥Ð¡¼¤ò²Ã¤¨¤ë¡£¤â¤·¡¢¤½¤Î¥É¥é¥¤¥Ö¤¬ 2 ÈÖÌܤÎ
.\"O than supported by your drive, you may cause it mechanical damage.\fP
.\"O Trying once if more tracks than the usual 40/80 are supported should not
.\"O damage it, but no warranty is given for that.
-.\"O Don't create device
-.\"O entries for those formats to prevent their usage if you are not sure.
-·Ù¹ð: ¤â¤·¡¢¥É¥é¥¤¥Ö¤Ç¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤ë¤è¤ê¿¤¯¤Î¥È¥é¥Ã¥¯¤ò»ý¤Ä¤è¤¦¤Ë
-¥Õ¥©¡¼¥Þ¥Ã¥È¤·¤è¤¦¤È¤·¤¿¾ì¹ç¡¢µ¡³£Åª¤Ê¥À¥á¡¼¥¸¤ò°ú¤µ¯¤³¤¹¤«¤âÃΤì¤Ê¤¤¡£
+.\"O If you are not sure, don't create device
+.\"O entries for those formats, so as to prevent their usage.
+\fB·Ù¹ð: ¥É¥é¥¤¥Ö¤¬¥µ¥Ý¡¼¥È¤·¤Æ¤¤¤ë¤è¤ê¤â¿¤¯¤Î¥È¥é¥Ã¥¯¤ò»ý¤Ä¤è¤¦¤Ë
+¥Õ¥©¡¼¥Þ¥Ã¥È¤·¤¿¾ì¹ç¡¢¥É¥é¥¤¥Ö¤Ëµ¡³£Åª¤Ê¥À¥á¡¼¥¸¤òÍ¿¤¨¤ë¤³¤È¤Ë¤Ê¤ë
+¤«¤â¤·¤ì¤Ê¤¤¡£\fP
+Ä̾ï¤Î 40/80 ¤è¤ê¤â¿¤¯¤Î¥È¥é¥Ã¥¯¤¬¥µ¥Ý¡¼¥È¤µ¤ì¤Æ¤¤¤ë¤«¤É¤¦¤«¤ò
+°ìÅٻ¤À¤±¤Ç¤Ï¥É¥é¥¤¥Ö¤Ë¥À¥á¡¼¥¸¤òÍ¿¤¨¤ë¤³¤È¤Ï¤Ê¤¤¤Ï¤º¤À¤¬¡¢
+¥À¥á¡¼¥¸¤òÍ¿¤¨¤Ê¤¤¤È¤¤¤¦ÊݾڤϤʤ¤¡£
+³Î¿®¤¬¤Ê¤¤¾ì¹ç¤Ï¡¢¤½¤Î¤è¤¦¤Ê»È¤¤Êý¤¬¹Ô¤ï¤ì¤Ê¤¤¤è¤¦¤Ë¡¢
+¤½¤¦¤·¤¿¥Õ¥©¡¼¥Þ¥Ã¥È¤Î¥É¥é¥¤¥Ö¡¦¥¨¥ó¥È¥ê¤òºîÀ®¤·¤Ê¤¤¤³¤È¡£
.PP
-ËÝÌõ¼ÔÃí:
+[ÌõÃí]
°Ê²¼¤Îɽ¤ËÍѤ¤¤é¤ì¤ëÍѸì¤Ïɽ¤ÎÀ°·Á¤Î´Ø·¸¤«¤é
(°ì¹Ô¤Ë¤¦¤Þ¤¯Ç¼¤á¤ë»ö¤¬¤Ç¤¤Ê¤«¤Ã¤¿¤¿¤á)
¤«¤é¸¶Ê¸¤Î¤Þ¤Þ¤È¤Ê¤Ã¤Æ¤¤¤Þ¤¹¡£ÆüËܸì¤È¤ÎÂбþ¤Ï°Ê²¼¤ÎÄ̤ê¤Ç¤¹¡£
Base minor # ¥Ù¡¼¥¹¥Þ¥¤¥Ê¡¼¥Ê¥ó¥Ð¡¼
.TE
-.\"O Drive independent device files which automatically detect the media
+.\"O Drive-independent device files which automatically detect the media
.\"O format and capacity:
-¥á¥Ç¥£¥¢¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤ÈÍÆÎ̤ò¼«Æ°Åª¤Ë¸¡½Ð¤¹¤ë¥É¥é¥¤¥ÖÈó°Í¸¤Î¥Ç¥Ð¥¤¥¹
-¥Õ¥¡¥¤¥ë:
+¥á¥Ç¥£¥¢¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤ÈÍÆÎ̤ò¼«Æ°Åª¤Ë¸¡½Ð¤¹¤ë
+¥É¥é¥¤¥ÖÈó°Í¸¤Î¥Ç¥Ð¥¤¥¹¥Õ¥¡¥¤¥ë:
.TS
l l.
Name Base minor #
¥Õ¥í¥Ã¥Ô¡¼¥³¥ó¥È¥í¡¼¥é¡¼¤ËÄã¥ì¥Ù¥ë¤Î¥³¥Þ¥ó¥É(raw command)¤òÁ÷¤ë¡£
.PP
.\"O For more precise information, consult also the \fI<linux/fd.h>\fP and
-.\"O \fI<linux/fdreg.h>\fP include files, as well as the manual page for
-.\"O floppycontrol.
-¤è¤êÀµ³Î¤Ê¾ðÊó¤Î¤¿¤á¤Ë¤Ï¡¢¥Õ¥í¥Ã¥Ô¡¼¥³¥ó¥È¥í¡¼¥é¡¼¤Î¥Þ¥Ë¥å¥¢¥ë¤Ï¤â¤Á¤í
-¤ó¡¢\fI<linux/fd.h>\fP ¤È \fI<linux/fdarg.h>\fP ¥¤¥ó¥¯¥ë¡¼¥É¥Õ¥¡¥¤¥ë¤â»²¾È¤Î¤³¤È¡£
+.\"O \fI<linux/fdreg.h>\fP include files, as well as the
+.\"O .BR floppycontrol (1)
+.\"O manual page.
+¤è¤êÀµ³Î¤Ê¾ðÊó¤Î¤¿¤á¤Ë¤Ï¡¢¥Þ¥Ë¥å¥¢¥ë¥Ú¡¼¥¸
+.BR floppycontrol (1)
+¤À¤±¤Ç¤Ê¤¯¡¢¥¤¥ó¥¯¥ë¡¼¥É¥Õ¥¡¥¤¥ë \fI<linux/fd.h>\fP ¤È
+\fI<linux/fdarg.h>\fP ¤â»²¾È¤Î¤³¤È¡£
.\"O .SH FILES
.SH ¥Õ¥¡¥¤¥ë
/dev/fd*
.\"O .SH NOTES
.SH Ãí°Õ
-.\"O The various formats allow to read and write many types of disks.
-.\"O However, if a floppy is formatted with a too small inter sector gap,
-.\"O performance may drop, up to needing a few seconds to access an entire
-.\"O track.
+.\"O The various formats permit reading and writing many types of disks.
+.\"O However, if a floppy is formatted with an inter-sector gap that is too small,
+.\"O performance may drop,
+.\"O to the point of needing a few seconds to access an entire track.
.\"O To prevent this, use interleaved formats.
+ÍÍ¡¹¤Ê¥Ç¥£¥¹¥¯¤Î¥¿¥¤¥×¤ÇÍÍ¡¹¤Ê¼ïÎà¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤ÎÆɤ߽ñ¤¤¬µö¤µ¤ì¤Æ¤¤¤ë¡£
+¤·¤«¤·¡¢¾®¤µ¤¹¤®¤ë¥»¥¯¥¿´Ö¥®¥ã¥Ã¥×¤Ç¥Õ¥©¡¼¥Þ¥Ã¥È¤µ¤ì¤¿¥Õ¥í¥Ã¥Ô¡¼¤Ç¤Ï¡¢
+¥È¥é¥Ã¥¯Á´ÂΤΥ¢¥¯¥»¥¹¤Ë¿ôÉÃɬÍפˤʤ뤿¤á¡¢Àǽ¤¬Äã²¼¤¹¤ë¤³¤È¤À¤í¤¦¡£
+¤³¤ì¤òËɤ°¤¿¤á¤Ë¤Ï¡¢¥¤¥ó¥¿¡¼¥ê¡¼¥Ö¥É¡¦¥Õ¥©¡¼¥Þ¥Ã¥È
+(interleaved format) ¤òÍѤ¤¤ì¤Ð¤è¤¤¡£
+
.\"O It is not possible to
.\"O read floppies which are formatted using GCR (group code recording),
.\"O which is used by Apple II and Macintosh computers (800k disks).
-.\"O Reading floppies which are hard sectored (one hole per sector, with
-.\"O the index hole being a little skewed) is not supported.
-.\"O This used to be common with older 8 inch floppies.
-ÍÍ¡¹¤Ê¥Ç¥£¥¹¥¯¤Î¥¿¥¤¥×¤ÇÍÍ¡¹¤Ê¼ïÎà¤Î¥Õ¥©¡¼¥Þ¥Ã¥È¤ÎÆɤ߽ñ¤¤¬µö¤µ¤ì¤Æ¤¤
-¤ë¡£¤·¤«¤·¡¢¤â¤·¥»¥¯¥¿´Ö¤Î¥®¥ã¥Ã¥×¤¬¾®¤µ¤¹¤®¤ë¤è¤¦¤Ë¥Õ¥í¥Ã¥Ô¡¼¤¬¥Õ¥©¡¼
-¥Þ¥Ã¥È¤µ¤ì¤¿¤Ê¤é¤Ð¡¢¥È¥é¥Ã¥¯Á´ÂΤΥ¢¥¯¥»¥¹¤Ë¿ôÉÃɬÍפˤʤ뤿¤áÀǽ¤¬Äã
-²¼¤¹¤ë¤À¤í¤¦¡£¤³¤ì¤òËɤ°¤¿¤á¤Ë¤Ï¡¢¥¤¥ó¥¿¡¼¥ê¡¼¥Ö¥É¡¦¥Õ¥©¡¼¥Þ¥Ã¥È
-(interleaved format) ¤òÍѤ¤¤ë¡£
+Apple II ¤ä Macintosh ¥³¥ó¥Ô¥å¡¼¥¿¤Ç»ÈÍѤµ¤ì¤Æ¤¤¤ë¡¢
+GCR (group code recording) ¤ò»È¤Ã¤Æ¥Õ¥©¡¼¥Þ¥Ã¥È¤µ¤ì¤¿¥Õ¥í¥Ã¥Ô¡¼
+(800k ¥Ç¥£¥¹¥¯) ¤òÆɤळ¤È¤Ï¤Ç¤¤Ê¤¤¡£
+
+.\"O+ Reading floppies which are hard sectored (one hole per sector, with
+.\"O+ the index hole being a little skewed) is not supported.
+.\"O+ This used to be common with older 8-inch floppies.
.\"O .\" .SH AUTHORS
.\" .SH Ãø¼Ô
.\" Alain Knaff (Alain.Knaff@imag.fr), David Niemi
.BR superformat (1),
.BR mount (8),
.BR setfdprm (8)
-ËÝÌõ
.\" .SH ËÝÌõ¼Ô
.\" ÀÐÀî ËÓ <ishikawa@linux.or.jp>
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