gpt formatting and uefi booting

[m.roth at 5-cent.us]

Doll, Margaret Ann wrote:
> Thanks, Mark.
>
> I will look for the 6.5 download.

Yeah, or run yum update.
>
> Don't I have to run the parted -a opt on a RedHat system?
> Is parted available from the installation DVD?
>
I'm not sure. We run mostly CentOS at work, so the same as RHEL, and it's
available when we're doing our PXEboot installs.

        mark
>
>
>
> On Wed, Jun 25, 2014 at 10:58 AM, <m.roth at 5-cent.us> wrote:
>
>> Doll, Margaret Ann wrote:
>> > I have a Dell PowerEdge T120 with 12  4Tb disks.  I want to use the
>> first
>> > disk as the system disk and the remaining 11 as a raid 5.
>> >
>> > I have the first disk set up as a raid 0.  I installed RedHat 6.4
>> server
>> > software on the first disk.  I set up the Dell to use a uefi boot
>> instead
>> > of bios.  However, I cannot boot up the new system as the bios does
>> not
>> > support the size of the system disk.
>>
>> First, update it to 6.5. Like, yesterday. 6.4 will contain things like
>> the
>> heartbleed bug, etc.
>> >
>> > I gather I should set up  gpt partitioning instead of the default mbr
>> on
>> > the first disk.
>> >
>> > How do I do this?
>>
>> You can either use the gui gparted, or the user hostile parted. Note
>> that
>> if you do this, you'll probably have to reinstall - is that ok?
>>
>> One other option would be to partition disk 0, say, into two 2GB
>> partitions,  and RAID 1 them. Alternatively, what we're doing here for
>> drives 1TB and over is to make a root partition of 500GB, and the rest
>> as
>> another partition.
>>
>> $ parted -a opt
>>    > mklabel gpt
>>    > mkpart pri (don't be confused - when they say "name, they mean
>>                      primary or extended....)
>>    >>  start: 0.0GB (will make sure it's actually aligned)
>>    >>  end: 100%
>>    > q
>> will make you one big drive.
>>
>>        mark
>>
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