Date: Wed, 19 Jun 2013 10:02:20 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: "O. Hartmann" <ohartman@zedat.fu-berlin.de> Cc: freebsd-current@freebsd.org Subject: Re: gpart: can not add MBR partitions with "gpart add -t mbr" Message-ID: <alpine.BSF.2.00.1306190947060.99258@wonkity.com> In-Reply-To: <20130618110939.41c43066@telesto> References: <20130618110939.41c43066@telesto>
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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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