Re: [CentOS] Two partitions with samd UUID??

On 15.06.2015 18:13, John Hodrien wrote:

On Mon, 15 Jun 2015, jd1008 wrote:

...

Thanx for the update but what about non-gpt and non lvm partitions? What is used as inp nut to create a universally unique id?

(Actually, for an id to be universally unique, one would almost nee knowledge of all existing id's. So, I do not have much credence in this universal uniqueness.

Sufficiently random gets you there, since you're not connecting billions of filesystems to a single system. If you really want to generate them by hand, feel free, as mkfs.ext4 lets you specify the filesystem UUID.

Or if you are in the situation of the original poster and made a copy using dd use tune2fs -L and -U to modify label and uuid of the copy.

Regards, Dennis