 | | | partitioning a hardware RAID | partitioning a hardware RAID 2005-06-01 - By Ed Wilts
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On Wed, Jun 01, 2005 at 04:57:57PM -0400, Warren Lamboy wrote:
> "fdisk -l" tells me that I have the following device:
>
> Disk /dev/sda: 733.4 GB, 733468426240 bytes
> 255 heads, 63 sector/track, 89172 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
>
> /dev/sda1 1 5 40131 de Dell Utility
> /dev/sda2 * 6 18 104422+ 83 Linux
> /dev/sda3 19 17580 141066765 83 Linux
> /dev/sda4 17581 17834 2040255 f Win95 Ext'd
> (LBA)
> /dev/sda5 17581 17834 2040223+ 82 Linux swap
>
>
> The size of the device in GB is about what I expected, so I think the
> hardware
> is set up okay and Linux recognizes it correctly.
>
> I have been asked to add one new partition to this "drive" that uses all
> of
> the free space. If I understand correctly, I need to add a new
> partition,
> /dev/sda6, starting at 17835 and ending at 89172 with Id = 83 and System
> =
> Linux, and should be able to use fdisk to do that. I think I understand
> fdisk well enough to do this. However, I still have a couple of
> questions:
> 1. Do I need to reboot the system into "rescue" mode to do this?
> Can't I just use fdisk on a running machine as long as I don't mess up
> the existing partitions? Various documents I find about adding
> partitions suggest that I must boot into rescue mode to use fdisk for
> this.
You do not need to boot from a rescue disk. Do the following:
# fdisk /dev/sda
and ask for help (I haven't got time to go through all the steps right
now to verify each command). You will add a new partition and select
the default start and end block. Type 83 is right. Write the partition
table and exit.
> 2. My reading of the table above indicates that the swap partition
> overlaps with the extended partition. Am I interpreting this
> correctly? If I am, is this arrangement normal? Is it desirable?
> Does it cause any potential problems?
That's normal - don't worry about it. You can have only 4 primary
partitions on a disk.
--
Ed Wilts, RHCE
Mounds View, MN, USA
mailto:ewilts@(protected)
Member #1, Red Hat Community Ambassador Program
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