[CentOS] /dev/sda

[m.roth at 5-cent.us]

Lamar Owen wrote:
> On Tuesday, December 06, 2011 02:46:24 PM m.roth at 5-cent.us wrote:
>> Booting purposes is the point: /dev/md0 is /boot. And as the slot's
>> ATA0, it should come up as sda. You mention getting the bootloader
>> sectors over - do you mean, after it's rebuilt and active, to then rerun
>> grub-install?
>
> Either that, or dd the stage1.5 sectors over.  See
> https://en.wikipedia.org/wiki/GNU_GRUB#GRUB_version_1
>
> for more information on where the stage1.5 is located on the disk.

Well, I dd'd the first meg or so with /dev/zero of both /dev/sdc2 and
/dev/sdc3 (what happened to /dev/true and /dev/false?), and readded it,
and it's happily rebuilding.
>
>> Remember, the drive that's failing is /dev/sda. I also don't see why, if
>> I replace the original drive in the original slot (I'm doing this on the
>> clone, whose drive is just fine, thankyouveddymuch), it isn't recognized
>> as /dev/sda.
>
> I've seen that happen before.  It was a tad disconcerting at first, but,
> yes, in the case I saw it a reboot made it back to sda.

I'll be *very* interested about rebooting.
>
>> Another question, for you, or Johnny - where's the source code for
>> udevadm? The documentation doesn't, and I was just trying to yum install
>> the udev-devel so I could look at the source code, and there's no such
>> package.
>
> The udev source RPM should contain this.  As CentOS 5 doesn't include
> udevadm, I'm assuming this is CentOS 6, which does, so you'd want to get
>
> http://vault.centos.org/6.0/cr/SRPMS/Packages/udev-147-2.35.el6.src.rpm
>
> which is the latest CentOS source package. (6.2 has a newer one; you
> could, if you wanted to, go to ftp.redhat.com and grab the src.rpm there).

Thanks a lot - that's much appreciated.

         mark