Attachment #16883 for bug #30809




.Ql ad0 ,
and
.Ql da0
are searched in that order, until one is found to respond.
being found responding.
.Pp
When called with no arguments,
.Nm
prints the sector 0 partition table.
An example follows:
.Bd -literal
	******* Working on device /dev/ad0 *******

.It Em "flag 80"
specifies that this is the active partition.
.It Em cyl , sector No and Em head
fields are used to specify the beginning and end addresses of the partition.
and end address for the partition.
.It Em Note :
these numbers are calculated using BIOS's understanding of the disk geometry
and saved in the bootblock.
.El
.Pp
The
.Fl i
or
.Fl u
flags are used to indicate that the partition data is to be updated, unless the
.Fl f
option is used.  If the
.Fl f

selects defaults for its questions to guarantee the above behavior.
.Pp
It displays each partition
and asks whether you want to edit it.
If you say yes,
it will step through each field showing the old value
and asking for a new one.

.Em active
partition.
Finally,
when all the data for sector 0 has been accumulated,
you are asked to confirm whether you really want to rewrite it.
Only if you answer yes,
will the data be written to disk.
.Pp
The difference between the
.Fl u
and
.Fl i
flags is that
the
.Fl u
flag just edits (updates) the fields as they appear on the disk,
while the
.Fl i
flag is used to "initialize" sector 0;
it will setup the last BIOS partition to use the whole disk for

and make it active.
.Sh NOTES
The automatic calculation of starting cylinder etc. uses
a set of figures that represent what the BIOS thinks the
geometry of the drive is.
These figures are taken from the incore disklabel by default,
but the program initially gives you an opportunity to change them.
This allows the user to create a bootblock that can work with drives
that use geometry translation under the BIOS.

from a
.Ar configfile .
The syntax of this file is very simple.  Each line is either a comment or
a specification, and whitespace (except for newlines) is not significant:
.Bl -tag -width Ds
.It Xo
.Ic #

Return to bug 30809

Lines 131-140 Link Here

(-)sbin/i386/fdisk/fdisk.8 (-20 / +18 lines)
131	.Ql ad0 ,	131	.Ql ad0 ,
132	and	132	and
133	.Ql da0	133	.Ql da0
134	are being searched in that order, until one is	134	are searched in that order, until one is found to respond.
135	being found responding.
136	.Pp	135	.Pp
137	When called with no arguments, it prints the sector 0 partition table.	136	When called with no arguments,
		137	.Nm
		138	prints the sector 0 partition table.
138	An example follows:	139	An example follows:
139	.Bd -literal	140	.Bd -literal
140	***** Working on device /dev/ad0 *****	141	***** Working on device /dev/ad0 *****
Lines 180-197 Link Here
180	.It Em "flag 80"	181	.It Em "flag 80"
181	specifies that this is the active partition.	182	specifies that this is the active partition.
182	.It Em cyl , sector No and Em head	183	.It Em cyl , sector No and Em head
183	fields are used to specify the beginning address	184	fields are used to specify the beginning and end addresses of the partition.
184	and end address for the partition.
185	.It Em Note :	185	.It Em Note :
186	these numbers are calculated using BIOS's understanding of the disk geometry	186	these numbers are calculated using BIOS's understanding of the disk geometry
187	and saved in the bootblock.	187	and saved in the bootblock.
188	.El	188	.El
189	.Pp	189	.Pp
190	The flags	190	The
191	.Fl i	191	.Fl i
192	or	192	or
193	.Fl u	193	.Fl u
194	are used to indicate that the partition data is to be updated, unless the	194	flags are used to indicate that the partition data is to be updated, unless the
195	.Fl f	195	.Fl f
196	option is used. If the	196	option is used. If the
197	.Fl f	197	.Fl f
Lines 203-209 Link Here
203	selects defaults for its questions to guarantee the above behavior.	203	selects defaults for its questions to guarantee the above behavior.
204	.Pp	204	.Pp
205	It displays each partition	205	It displays each partition
206	and ask if you want to edit it.	206	and asks whether you want to edit it.
207	If you say yes,	207	If you say yes,
208	it will step through each field showing the old value	208	it will step through each field showing the old value
209	and asking for a new one.	209	and asking for a new one.
Lines 227-246 Link Here
227	.Em active	227	.Em active
228	partition.	228	partition.
229	Finally,	229	Finally,
230	when the all the data for the first sector has been accumulated,	230	when all the data for sector 0 has been accumulated,
231	you are asked if you really want to rewrite sector 0.	231	you are asked to confirm whether you really want to rewrite it.
232	Only if you answer yes,
233	will the data be written to disk.
234	.Pp	232	.Pp
235	The difference between the	233	The difference between the
236	.Fl u	234	.Fl u
237	flag and	235	and
238	.Fl i	236	.Fl i
239	flag is that	237	flags is that
240	the	238	the
241	.Fl u	239	.Fl u
242	flag just edits the fields as they appear on the disk.	240	flag just edits (updates) the fields as they appear on the disk,
243	While the	241	while the
244	.Fl i	242	.Fl i
245	flag is used to "initialize" sector 0;	243	flag is used to "initialize" sector 0;
246	it will setup the last BIOS partition to use the whole disk for	244	it will setup the last BIOS partition to use the whole disk for
Lines 248-256 Link Here
248	and make it active.	246	and make it active.
249	.Sh NOTES	247	.Sh NOTES
250	The automatic calculation of starting cylinder etc. uses	248	The automatic calculation of starting cylinder etc. uses
251	a set of figures that represent what the BIOS thinks is the	249	a set of figures that represent what the BIOS thinks the
252	geometry of the drive.	250	geometry of the drive is.
253	These figures are by default taken from the incore disklabel,	251	These figures are taken from the incore disklabel by default,
254	but the program initially gives you an opportunity to change them.	252	but the program initially gives you an opportunity to change them.
255	This allows the user to create a bootblock that can work with drives	253	This allows the user to create a bootblock that can work with drives
256	that use geometry translation under the BIOS.	254	that use geometry translation under the BIOS.
Lines 276-282 Link Here
276	from a	274	from a
277	.Ar configfile .	275	.Ar configfile .
278	The syntax of this file is very simple. Each line is either a comment or	276	The syntax of this file is very simple. Each line is either a comment or
279	a specification, and whitespace (except for newlines) are ignored:	277	a specification, and whitespace (except for newlines) is not significant:
280	.Bl -tag -width Ds	278	.Bl -tag -width Ds
281	.It Xo	279	.It Xo
282	.Ic #	280	.Ic #