My two harddisk are as follows

hdd A- 80gb (IDE)
hdd B-250gb(SATA)

and yes, I guess I figured it out!

Attached is the output when i booted both of my hard disk individually.

I checked the LVM displays for both the harddisks, i.e lvdisplay, vgdisplay, and pvdisplay.  Because of the default installs they were having the same name!!!!
so, may be because of this on the fly when they are mounted I am getting mixed file systems!!!
 
But One thing that I am still not able to figure out is that
when I have selected a particular harddisk to boot from BIOS, then during the boot process, (assuming 1st hard disk is selected) the other one is only seen as a device, it is not mounted up, right??? So, how can it find the name from the other device??
I mean if sda is selected then how can it do mounts from sdb???




On Mon, Jun 25, 2012 at 11:09 AM, Ankur Sinha <sanjay.ankur@gmail.com> wrote:
On Sun, 2012-06-24 at 23:03 +0530, beyond.hack wrote:
> Hello experts,

Hello (noob? :P)

>
>
> (This is my first post here, so kindly ignore any mistakes if any
> here)..

>
> I have been using Fedora 16 for quite a time and yes, I am facing a
> big problem..may be because of a a bug in Fedora 16..
> I hope you people will make it clear..
> the condition is::
> I have two harddisks both are having Fedora 16 installed occupying the
> full space on both of them, say hdd-A and hdd-B.
>
>
> The problem comes when i boot my system with both the harddisks
> plugged in. First I select which hdd to boot from bios then the
> selected one starts to boot up, GRUB appears and loads the selected
> kernel but after the booting process is done.
> what I am getting is a mixed File System.!!!! i.e. I get the /home
> directory of other hard disk!!!!
> and this is the case when I boot any of the harddisk A or B,
> I always face the cross mount problem??

Here's a wild gues:

Can you please check your fstabs in both installations please? Are they
listed as

/dev/sdX or as

/dev/disk-by-label or /dev/disk-by-uuid?

If they're listed as /dev/sdX, whatever disk is detected first gets sda
and so on, which could be why you get mixed file systems.

If this is the case, just modifying your fstab to use
'disk-by-label/disk-by-uuid' *should* do the trick.

I still think that the disk you mount off should get /dev/sda already,
but since I don't have this setup I can't confirm.

>
>
> Rather, if I boot with single hdd,(other one plugged off) it boots as
> normal!!!

In this case, there is only one disk, which gets recognized as /dev/sda,
and therefore no mix ups.

>
>
> Is anyone facing this problem??

No. As Shakti already said, we use one installation of Fedora and
external disks as data/backup disks :)

Also, can you please tell us if your disks are IDE or SATA?

>
>
> Any help or discussion is appreciated..

> Regards!!!!
>


--
Thanks,
Warm regards,
Ankur: "FranciscoD"

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