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07/16/2009 at 09:23PM PDT, ID: 24577986
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6.6

Create 3TB msdos partition table in CentOS5.3 x64

Asked by uniserveps in CentOS, Linux Setup, Linux, Computer Servers, Computer Hard Drives

Tags: CentOS, CentOS5.3, GPT, fdisk, parted

Hello all,

My company is trying to install CentOS 5.3 x64 on to a 3TB RAID6 volume that was configured using a ServeRaid 8k on an IBM x3650. The problem we keep running into is that the anaconda installer see's that the disk is 3TB and then rewrites our msdos partition table as GPT. This is unacceptable as our server is not Itanium nor does it have EFI.
We tried reverting the changes to the partition table made by anaconda using dd to zero out the first 64 and last 9000 sectors on the disk. After that we used fdisk to create a partition structure:

Using /dev/sda
Model: ServeRA SERVER (scsi)
Disk /dev/sda: 3000GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system  Flags
 1      32.3kB  518MB   518MB   primary  ext3         boot
 2      518MB   1469GB  1468GB  primary               lvm
 3      1469GB  3000GB  1532GB  primary               lvm

Unfortunately, anaconda isn't able to recognize the msdos partition table when the installer is restarted and it only gives us the option to try and clear the partition table, resulting in the disk being partitioned using GPT again.

The only reason I think that I am able to get around using GPT is because another server in our office with the same specs is running CentOS fine using the same partition layout. Any pointers or advice would be appreciated. We would like to avoid having to use GPT for the 3TB volume and then a separate device for /boot.
[+][-]07/17/09 01:09 PM, ID: 24882416

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About this solution

Zones: CentOS, Linux Setup, Linux, Computer Servers, Computer Hard Drives
Tags: CentOS, CentOS5.3, GPT, fdisk, parted
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Solution Provided By: uniserveps
Participating Experts: 3
Solution Grade: A
 
 
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