define more partitions in freebsd

s m sam.gh1986 at
Sat Jun 1 07:56:17 UTC 2013

thanks for your reply,

it is a good news if i can define more partitions with gpart. names
are not so important for me. if i can define more partitions with
gpart, are these partitions work correctly? you know i wan to define a
journal partition for each partition on my freebsd. so if i use these
extra partition as journal provider, do they work correctly?

and another question, how can i define more partitions with gpart? i
searched and some people say to use "gpart -n 20". do you mean to use
this command too?

and my last question, some people say to change byte 0x28a of the disk
from 0x08 to 0x14 (which 14 is the number of partitions). do you think
it's a good idea and applicable solution?

thanks for your attention

On 6/1/13, Polytropon <freebsd at> wrote:
> On Sat, 1 Jun 2013 11:10:32 +0430, s m wrote:
>> hello all
>> i want to install freebsd8.2 on my system. for some reasons, i need
>> partitions more than 6. my freebsd just allow me to define partitions
>> from a to h, not any more.
> That's correct and expected for the MBR partitioning approach
> (which is considered "mostly outdated" today).
>> i checked FreeBSD handbook, but it doesn't say anything about defining
>> more partitions.
> Because you _cannot_ define more partitions than up to 'h'.
> This is a hard-defined limit of MBR-style partitions (as
> they are initialized with bsdlabel).
>> my question is: how can i define more partitions on my freebsd? (for
>> example, ad3s1a, ..., ad3s1h, ad3s1i, ad3s1j, ...).
> You cannot. You need to use the GPT partitioning approach
> and repartition your disk. With gpart, you can create more
> than 'h' partitions, but the partitions will have different
> names, such as ad3s1p1, ad3s1p2, ..., ad3s1p10, ad3s1p11, ...
> and so on.
> --
> Polytropon
> Magdeburg, Germany
> Happy FreeBSD user since 4.0
> Andra moi ennepe, Mousa, ...

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