:> I think you are specifying the wrong arguments to disklabel; I
:> seem to rememebr a -w/-W distinction...
:
:Nope.
:
:> In any case, I'm running with a disklabel inside a DOS partition
:> on all but one box of mine, and always have been. I installed
:> 4.1 on my laptop that way.
:
:Sysinstall can create a disklabel inside of a MBR slice fine. The
:problem is that the disklabel(8) _program_ itself doesn't know how
:to create a virgin disklabel for a MBR slice.
:
:--
:
:John Baldwin <[EMAIL PROTECTED]> -- http://www.FreeBSD.org/~jhb/
The patchset I put on the lists earlier today will allow disklabel
to install a virgin label on a slice. Did it not get out? As matters
currently stand, disklabel can only edit a preexisting label on a slice.
I'll post it again... included below (this time without the file
descriptor cruft that snuck into my previous posting of the patch). With
the patch you can do this:
# optional dd if you are paranoid
# dd if=/dev/zero of=/dev/da0 bs=32k count=4
fdisk -I da0
disklabel -w -r da0s1 auto
That's much preferable to having to use sysinstall if all you want to
do is initialize a label on a slice.
-Matt
Index: sbin/disklabel/disklabel.c
===================================================================
RCS file: /home/ncvs/src/sbin/disklabel/disklabel.c,v
retrieving revision 1.28.2.3
diff -u -r1.28.2.3 disklabel.c
--- sbin/disklabel/disklabel.c 2000/07/01 06:47:46 1.28.2.3
+++ sbin/disklabel/disklabel.c 2000/10/27 19:24:00
@@ -1347,10 +1347,17 @@
warn("cannot open %s", namebuf);
return (NULL);
}
- if (ioctl(f, DIOCGDINFO, &lab) < 0) {
- warn("ioctl DIOCGDINFO");
- close(f);
- return (NULL);
+
+ /*
+ * Try to use the new get-virgin-label ioctl. If it fails,
+ * fallback to the old get-disdk-info ioctl.
+ */
+ if (ioctl(f, DIOCGDVIRGIN, &lab) < 0) {
+ if (ioctl(f, DIOCGDINFO, &lab) < 0) {
+ warn("ioctl DIOCGDINFO");
+ close(f);
+ return (NULL);
+ }
}
close(f);
lab.d_boot0 = NULL;
Index: sys/kern/subr_diskslice.c
===================================================================
RCS file: /home/ncvs/src/sys/kern/subr_diskslice.c,v
retrieving revision 1.82
diff -u -r1.82 subr_diskslice.c
--- sys/kern/subr_diskslice.c 2000/01/28 11:51:08 1.82
+++ sys/kern/subr_diskslice.c 2000/10/27 19:23:28
@@ -366,12 +366,46 @@
int slice;
struct diskslice *sp;
struct diskslices *ssp;
+ struct partition *pp;
slice = dkslice(dev);
ssp = *sspp;
sp = &ssp->dss_slices[slice];
lp = sp->ds_label;
switch (cmd) {
+
+ case DIOCGDVIRGIN:
+ lp = (struct disklabel *)data;
+ if (ssp->dss_slices[WHOLE_DISK_SLICE].ds_label) {
+ *lp = *ssp->dss_slices[WHOLE_DISK_SLICE].ds_label;
+ } else {
+ bzero(lp, sizeof(struct disklabel));
+ }
+
+ lp->d_magic = DISKMAGIC;
+ lp->d_magic2 = DISKMAGIC;
+ pp = &lp->d_partitions[RAW_PART];
+ pp->p_offset = 0;
+ pp->p_size = sp->ds_size;
+
+ lp->d_npartitions = MAXPARTITIONS;
+ if (lp->d_interleave == 0)
+ lp->d_interleave = 1;
+ if (lp->d_rpm == 0)
+ lp->d_rpm = 3600;
+ if (lp->d_nsectors == 0)
+ lp->d_nsectors = 32;
+ if (lp->d_ntracks == 0)
+ lp->d_ntracks = 64;
+
+ lp->d_bbsize = BBSIZE;
+ lp->d_sbsize = SBSIZE;
+ lp->d_secpercyl = lp->d_nsectors * lp->d_ntracks;
+ lp->d_ncylinders = sp->ds_size / lp->d_secpercyl;
+ lp->d_secperunit = sp->ds_size;
+ lp->d_checksum = 0;
+ lp->d_checksum = dkcksum(lp);
+ return (0);
case DIOCGDINFO:
if (lp == NULL)
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