Re: hard disk nomenclature
2008/10/27 Owen Townend <owen.townend@gmail.com>:
> 2008/10/27 L. V. Gandhi <lvgandhi@gmail.com>:
>> I have P5GC-MX motherboard which has on one IDE hdd slot and two SATA HDD
>> slots. I have installed primary IDE DVD drive, secondary IDE IDE HDD 80GB
>> and Primarty SATA 160GB SATA HDD. BIOS shows as
>> FIRST IDE MASTER DVD
>> FIRST IDE SLAVE 80GB IDE DRIVE
>> THIRD IDE PRIMARY MASTER 160 GB SATA HDD
>>
>> Debain ETCH shows 80GB IDE Drive as hdb and 160 GB SATA drive as sda.
>> KUBUNTU 0710 shows 80GB IDE Drive as sda and 160 GB SATA drive as sdb.
>>
>> I would like to be enlightened why this happens.
Sounds like it's just changes implemented after etch in Lenny that
Ubuntu is using. Lenny has all my hard drives listed as sdX and 7.10
was almost 6 months after the initial Etch release.
>
> Hey,
>
> As of Ubuntu 7.04 they have a unified their disks as sdX for both IDE
> and SATA which is why the 80GB IDE drive is now showing up as a sdX
> device. As to which becomes sda and which is sdb that is now AFAIK
> considered to be 'luck' as Ubuntu is moving towards parallel detection
> which does not guarantee detection order. This is possible as they
> now use UUIDs to identify all the filesystems: i.e. instead of
> '/dev/sda' it would be more like
> UUID=b1f711c3-e86b-4d63-a14f-ec2e2f377a12. IIRC Grub has recently
> added support for UUIDs too which helps removes reliance on BIOS' disk
> ordering also.
>
> Ubuntu is based on Debian but is a much faster moving distribution.
> Debian Etch is now several years old and being a stable release no
> major changes like this would be pushed into it. I haven't looked
> into it as yet, but If Debian follows the same path then at the very
> least these changes will not appear until a future release (lenny,
> sid, squeeze, etc).
how is an april 2007 release several years old?
>
> Hope that helps,
> Cheers,
> Owen.
>
>
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