Date: Mon, 29 Feb 2016 19:45:02 +0100 From: Polytropon <freebsd@edvax.de> To: Bernt Hansson <bah@bananmonarki.se> Cc: questions FreeBSD <FreeBSD-questions@freebsd.org> Subject: Re: boot code Message-ID: <20160229194502.eebeabd6.freebsd@edvax.de> In-Reply-To: <56D48D29.4060608@bananmonarki.se> References: <56D376F9.10207@bananmonarki.se> <20160228235850.5051e942.freebsd@edvax.de> <56D48D29.4060608@bananmonarki.se>
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On Mon, 29 Feb 2016 19:25:45 +0100, Bernt Hansson wrote: > On 2016-02-28 23:58, Polytropon wrote: > > On Sun, 28 Feb 2016 23:38:49 +0100, Bernt Hansson wrote: > >> Hello list! > >> > >> I need to get the boot code on a hdd. > >> Tried boot0cfg and fdisk -B /dev/ada1 > >> > >> But upon a reboot choosing the hdd it just don=B4t boot. > > > > The disk needs to have at least one partition that's marked > > as active, if I remember correctly. This is the "old way" > > of initializing it: > > > > # fdisk -BI /dev/ada1 > > # bsdlabel -B -w ada0s1 > > > > Add "-b /boot/boot0" for the fdisk command if you need to > > specify the boot code (normal boot or boot manager). > > > > If you want to use the whole disk as a "dedicated partition", > > you can do this: > > > > # bsdlabel -w ada1 > > # bsdlabel -e ada1 > > set type "4.2BSD" for 'a' partition > > make 'a' same size as 'c' > > save > > # newfs -m 0 -i 16384 -b 16384 -f 2048 -U -t enable -n disable -L ssdr= oot /dev/ada1a > > # bsdlabel -B ada1 > > > > Adjust -i, -b and -f according to the expected usage. > > But that's not a very kind way to deal with disks. :-) > > > > You should use gpart today. There is good documentation > > in "man gpart", as well as those resources: > > > > http://www.wonkity.com/~wblock/docs/html/disksetup.html > > > > https://www.freebsd.org/doc/handbook/disks-adding.html > > > > http://www.freebsd.org/doc/handbook/geom-glabel.html > > > > Avoid MBR partitioning if possible - it's considered obsolete, > > outdated, old-fashioned, stupid and lame. ;-) > > > Thank you but no cigar. >=20 > The machine is amd64 10.2-R so my guess its gpt. 10.2 and amd64 doesn't exclude the use of MBR or dedicated. :-) When using GPT, both fdisk and bsdlabel are quite useless. (They are also obsolete as gpart can do MBR partitioning, too.) So in your case, the following approach should work: # gpart create -s gpt ada1 # gpart add -t freebsd-boot -l gpboot -b 40 -s 512K ada1 # gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada1 After installing the boot code, add data partions as desired: # gpart add -t freebsd-ufs -l gprootfs -b 1M -s <size> ada1 Refer to: http://www.wonkity.com/~wblock/docs/html/disksetup.html#_the_new_standard_g= pt --=20 Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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