[Gllug] Bootable USB backup like OS X dmg?

[general_email at technicalbloke.com]

On 24/05/11 19:34, Steve Parker wrote:
> On 24/05/11 17:13, Dagfinn Ilmari Mannsåker wrote:
>> Steve Parker<steve at steve-parker.org>  writes:
>>
>>   
>>> On 24/05/11 16:38, gvim wrote:
>>>     
>>>> This is not what I'm looking for. I want to make an externally
>>>> bootable disk image of an installed Linux system, not a generic
>>>> USB-bootable Linux distro. Something like SuperDuper! on Mac OS X.
>>>>        
>>> Your device paths etc are likely to be invalid if you boot one server's
>>> image on another server
>>>      
>> That's why you use UUIDs and logical volume names, not raw physical
>> device paths, in fstab etc.
>>
>>    
> PCI paths to NICs, or MAC addresses? I'm just saying, it's worth being
> aware of these things. /dev/disk/by-* etc is useful, but only goes so
> far.
>


Aren't those autodetected in the majority of cases? Doing as Dagfinn
suggests and just making sure your devices are referenced by UUID should
be enough. It certainly was for me when I upgraded my Ubuntu system
recently. I took the drives out of my old machine, lashed them into the
new one in arbitrary order, pointed the bios to the system drive and it
booted straight up - no reconfiguration needed (except for my swap but
that was only because I had more RAM in the new box).

Roger.
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