Date: Thu, 18 Mar 2021 23:44:45 -0700 From: Kevin Oberman <rkoberman@gmail.com> To: Duke Normandin <sidney.reilley.ii@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: Partitioning 1T HDD Message-ID: <CAN6yY1ta74VcbEM104YUN_rqax7HAeGm%2BMTXWtbN75=qmZ-ChQ@mail.gmail.com> In-Reply-To: <20210318185106.82ace6b0a2e6d3b78ecc890f@gmail.com> References: <20210317213615.7e1443af@antix1> <CAN6yY1sK-aFEOmWTbo%2Boo1mWVdNiU6emMUMXwkw7Vy4m6CA_kA@mail.gmail.com> <20210318105902.0fad52928f1c43dea056bcb6@gmail.com> <44czvwgza8.fsf@be-well.ilk.org> <20210318120751.23e1e2f565e2face195d9d73@gmail.com> <CAN6yY1v2n_J268LFeQTeOizPZgnrehCRc1b1h=F93j_eabMqLA@mail.gmail.com> <20210318185106.82ace6b0a2e6d3b78ecc890f@gmail.com>
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Exactly. It replaces fdisk and bsdlabel. Use "gpart create" to set the disk
as GPT or BSD. Use "gpart add" to partition the drive. Then use newfs and
glabel as needed to finish up the file system. The gpart man page is pretty
good with several examples. Several more presentations may be found with a
web search. "gpart show <GEOM>" and "gpart list" to check that things look
right. List has all details while "show" just shows partitions. Generally
recommended that the boot block be padded to 2048. Do this by setting the
-b option to 2048 for the "add" of the partition after the boot block.
This is an example of an GPT setup. It has separate partitions for root,
usr, var, swap, and tmp plus an encrypted partition for sensitive files.
Don't forget swap!
gpart show ada
=> 40 3906963376 da0 GPT (1.8T)
40 1024 1 freebsd-boot (512K)
1064 984 - free - (492K)
2048 4194304 2 freebsd-ufs (2.0G)
4196352 4194304 3 freebsd-swap (2.0G)
8390656 10217464 4 freebsd-ufs (4.9G)
18608120 641728512 5 freebsd-ufs (306G)
660336632 1287722512 6 freebsd-ufs (614G)
1948059144 471040000 7 freebsd-ufs (225G)
2419099144 314572800 8 freebsd-ufs (150G)
2733671944 1173291472 - free - (559G)
34 2014 - free - (1.0M)
2048 532480 1 efi (260M)
534528 262144 2 ms-reserved (128M)
796672 541927424 3 ms-basic-data (258G)
542724096 1258291200 5 freebsd-ufs (600G)
1801015296 33554432 6 freebsd-swap (16G)
1834569728 2069889024 7 freebsd-ufs (987G)
3904458752 1034240 - free - (505M)
3905492992 1536000 4 ms-recovery (750M)
3907028992 143 - free - (72K)
Kevin Oberman, Part time kid herder and retired Network Engineer
E-mail: rkoberman@gmail.com
PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683
On Thu, Mar 18, 2021 at 5:51 PM Duke Normandin <sidney.reilley.ii@gmail.com>
wrote:
> On Thu, 18 Mar 2021 13:00:20 -0700
> Kevin Oberman <rkoberman@gmail.com> wrote:
>
> > I'd like to point out the GPT works for either MBR or EFI booting. My old
> > laptop had broken EFI support, so had to be MBR, but the partitioning was
> > GPT which is far easier to use and manage. It is likely true that EFI
> > requires GPT, but MBR does not. I'm not even positive about EFI
> > requirements, but it does need more partitions, so using it without GPT
> > would be, at best, awkward.
>
> Thanks for fleshing out the answer to my questions. Are you talking about
> using GPT rather than fdisk/cfdisk?
> --
> Duke Normandin <sidney.reilley.ii@gmail.com>
>
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