2.4TB disk - MBR and GPT coexist?

[Jan Mikkelsen]

Jo Rhett wrote:
> On Jan 11, 2007, at 10:00 PM, Charles Sprickman wrote:
>> On Thu, 11 Jan 2007, Jo Rhett wrote:
>>
>>>>>> Not any one that I've ever seen in commodity disks.  Yes, on  big 
>>>>>> fiber channel disk cabinets.  No to 6-8 drive raid  controllers.
>>>>> I'd be very surprised if you can't.  You can certainly do it  with 
>>>>> Areca (arcmsr(4)), HP (ciss(4)), IBM ServeRAID (ips(4)),  although the 
>>>>> details vary.
>>>
>>> On Jan 11, 2007, at 8:02 PM, Charles Sprickman wrote:
>>>> I can confirm 3Ware controllers also work that way.
>>>
>>> Please enlighten me.  I see no such options in the BIOS menu.
>>
>> I've done it in 3DM2, but look at pages 23+24 (printed page  numbers) 
>> here and the stuff regarding setting up a seperate boot  volume:
>>
>> http://www.3ware.com/support/UserDocs/3ware9590SEUsrGuide.pdf
>
> Those are CLI functions.  Which means you have to boot to run the  CLI, so 
> cart->horse.
>
> Sorry for being terse, but I have to solve the boot problem which is  what 
> started this conversation.
>
> For data arrays not part of boot, I could simply use GPT and be done  with 
> it.  I only need small volumes to solve the boot problem.

I just had a look at that documentation.  Not far before the referenced 
pages it says to hit "ALT-3" to enter the BIOS configuration, and then 
describes the procedure for creating a unit including creating a "boot 
unit".  No operating system is required at that stage.

The only 3ware controller I have here is an old 6000 series controller, but 
it functions in the same way:  When booting the machine, enter the magic 
keystrokes, use the BIOS utility to configure the volumes, then continue 
with the installation.

Do you see the "boot unit" option when use use ALT-3 to enter the 3ware 
configuration BIOS?

Regards,

Jan.