Re: Upgrade from CentOS6.6 to CentOS 7

[Digimer <lists@xxxxxxxxxx>]

On 15/12/15 11:10 AM, m.roth@xxxxxxxxx wrote:
> Traiano Welcome wrote:
>> On Tue, Dec 15, 2015 at 6:36 PM, Digimer <lists@xxxxxxxxxx> wrote:
>>> On 15/12/15 10:17 AM, Traiano Welcome wrote:
>>>>
>>>> Is it possible to upgrade from CentOS 6.7 to CentOS 7?
> <snip>
>>> Given how radically the OS changed, I would strongly advice against it.
>>> The move from sysvinit to systemd alone is enough to recommend against
>>> an upgrade.
>>
>> So it's not possible under any circumstances?
> 
> Let me offer you one option: *IF* you have enough space on your
> filesystems, you could:
> mkdir /boot/old /old
> zsh
> zmodload zsh/files
> mv /boot/* /boot/old/
> mv /usr  /old/
> mv /lib* /old/
> sync
> sync
> And go into the installer. If you have a problem, you can go back....
> 
>        mark

How would the move from the old to new grub work, particularly in
reverse if needed?

-- 
Digimer
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