[CentOS] SDA and HDA
Keith Roberts
keith at karsites.net
Wed Aug 18 18:56:51 UTC 2010
On Wed, 18 Aug 2010, Hannes Frederic Sowa wrote:
> To: CentOS mailing list <centos at centos.org>
> From: Hannes Frederic Sowa <hannes at mailcolloid.de>
> Subject: Re: [CentOS] SDA and HDA
>
> On Wed, Aug 18, 2010 at 1:23 AM, Matt <lm7812 at gmail.com> wrote:
>> With the default settings in my Supermicro motherboard CentOS calls my
>> SATA drive /dev/hda. If in bios setup I change 'Native Mode
>> Operation' from auto to 'Serial ATA' it boots up calling the drive
>> /dev/sda. I keep thinking its likely better under /dev/sda not? Any
>> problem switching it to that after install?
>
> If you have setup lvm and use labels for mounting your filesystem, the
> change should be hassle free. Otherwise you have to check grub.conf
> for the root parameter and change blockdevices in /etc/fstab.
I don't use LVM yet, but I found that using hard-coded
/dev/sda?? or /dev/hda?? in /etc/fstab is not recommended.
If LVM supports them, partition labels are the way to go.
/dev/?da?? get screwed up if you create or destroy
partitions. Whereas labels don't care about the actual
device name in question.
>From my etc/fstab file:
##########################################################################
# device sda - PRIMARY MASTER - BOTTOM BAY 4
##########################################################################
LABEL=Fedora-12-root / ext3 defaults 1 1
#/dev/sda5
LABEL=home /home ext3 defaults 1 2
# dev/sda6
LABEL=other-docs /mnt/other-docs ext3 rw,noauto,noexec,user 0 0
# dev/sda7
LABEL=tmp /tmp ext3 defaults 1 2
HTH
Keith Roberts
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