On Tue, 18 Jun 2013, O. Hartmann wrote:
Having a 1TB disk with a MBR partition layout created successfully with
"gpart create -s MBR ada4", which is shown as
Geom name: ada4
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 1953525167
first: 63
entries: 4
scheme: MBR
Consumers:
1. Name: ada4
Mediasize: 1000204886016 (931G)
Sectorsize: 512
Mode: r0w0e0
it is impossible for me to create a partition with
gpart add -t mbr ada4
as it can be read in the manpage of gpart.
I can't find that in 9-stable or -head. If it's a literal example,
please point it out and I'll fix it.
Whatever I do, I receive a
useless error from gpart
gpart: Invalid argument
with no further information.
In kernel, I already added GEOM_MBR. geom_part_mbr and geom_part_ldm
kernel modules are then already loaded.
I tried to figure out what's going wrong but this seems highly
enigmatic.
What am I doing wrong?
"mbr" is partitioning scheme, not a partition type. Common MBR
partition types that gpart knows by name are freebsd, freebsd-ufs,
freebsd-zfs, ntfs, no doubt lots of others but offhand I don't know
where to get the whole list.
Examples shown here (MBR in the second half):
http://www.wonkity.com/~wblock/docs/html/disksetup.html
Numbers can also be used for partition types by prefixing them with an
exclamation point, but that must be escaped to keep the shell from
interpreting it:
gpart add -t \!12 -s1G ada0
That would add a "FAT32X/LBA" partition. There's a list of values here:
http://en.wikipedia.org/wiki/Partition_type
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