On 01/13/2015 12:57 PM, Steve Clark wrote:
> On 01/13/2015 12:47 PM, Gordon Messmer wrote:
>>> I'm having an issue getting a C6.6 install to work on a 3 TB dual hard
>>> drive system, raid 0. I'm hoping that someone here can help.
>> 1: Is this system booting UEFI or BIOS?
>> 2: Is the disk partitioned with MBR or GPT?
>> 3: Is /boot on its own partition?
>>
>> 3TB drives are larger than MBR and BIOS properly support, so they're
>> only really expected to work on a system partitioned with GPT and
> Not exactly true - they work fine with an MBR but you can access 2/3 of the drive.
> Also it is not necessary to use UEFI to boot.
>
> You can have a fakeout mbr that is used for a standard bios boot.
>
> # fdisk -l
>
> WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
>
> Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
> 255 heads, 63 sectors/track, 364801 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disk identifier: 0x00000000
>
> Device Boot Start End Blocks Id System
> /dev/sda1 1 267350 2147483647+ ee GPT
> Partition 1 does not start on physical sector boundary.
> Tue Jan 13 12:55:21 EST 2015
> P308771:~
>
> # parted -l
> Model: ATA WDC WD30EFRX-68E (scsi)
> Disk /dev/sda: 3001GB
> Sector size (logical/physical): 512B/4096B
> Partition Table: gpt
>
> Number Start End Size File system Name Flags
> 1 1049kB 2097kB 1049kB bbp bios_grub
> 2 2097kB 1002MB 1000MB ext3 primary
> 3 1002MB 5002MB 3999MB linux-swap(v1) primary
> 4 5002MB 3001GB 2996GB ext4 primary
>
In addition this is how we partition our 3TB drives for a bios boot using parted.
parted -s ${DRIVE} -- mklabel gpt \
mkpart bbp 1MB 2MB \
set 1 bios_grub on \
mkpart primary ext3 2MB 1002MB \
mkpart primary linux-swap 1002MB 5002MB \
mkpart primary ext2 5002MB -1
>> booting via UEFI. And in that case, /boot and /boot/efi need to be
>> individual partitions.
>>
--
Stephen Clark
*NetWolves Managed Services, LLC.*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark at netwolves.com
http://www.netwolves.com