OS High Sierra not seen older systems

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OS High Sierra not seen older systems

Hector I Macedo-3
I installed OS HS in my iMac (Late 2013)3.2GHz, Core i5, 32GB memory, with a 1 TB Hitachi SSD, and apparently that is not reversible, I did try to re-start the computer from an external with OS Sierra installed on it, and it did not recognize it. Has anyone seen this behavior?
I noticed that the SSD has been reformatted to the new file system and I suspect that it could be the reason.

,Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle




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Re: OS High Sierra not seen older systems

Al Varnell
Your internal SSD drive was automatically converted to the new APFS format by the High Sierra installer. It's possible to reverse all that by erasing the drive and converting it back to HFS+ (Journaled) but it's complicated and you would then need to restore everything from backup.

But APFS should not prevent you from being able to recognize the external Sierra drive. I've read a few reports of issues with USB connected externals, but nothing universal. 

Did you try using Startup Manager to boot from the external (hold down the <Option/Alt>-key at reboot).

-Al-

On Tue, Oct 10, 2017 at 02:34 PM, Hector I Macedo wrote:
I installed OS HS in my iMac (Late 2013)3.2GHz, Core i5, 32GB memory, with a 1 TB Hitachi SSD, and apparently that is not reversible, I did try to re-start the computer from an external with OS Sierra installed on it, and it did not recognize it. Has anyone seen this behavior?
I noticed that the SSD has been reformatted to the new file system and I suspect that it could be the reason.

,Hector I Macedo



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Re: OS High Sierra not seen older systems

@lbutlr
In reply to this post by Hector I Macedo-3
On Oct 10, 2017, at 3:34 PM, Hector I Macedo <[hidden email]> wrote:
> I installed OS HS in my iMac (Late 2013)3.2GHz, Core i5, 32GB memory, with a 1 TB Hitachi SSD, and apparently that is not reversible, I did try to re-start the computer from an external with OS Sierra installed on it, and it did not recognize it. Has anyone seen this behavior?

Nope. I boot my iMac on 10.13 and 10.12,6. Works fine.

There must be something wrong with the install not eh external drive.

> I noticed that the SSD has been reformatted to the new file system and I suspect that it could be the reason.

Nope.


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Apple broke AppleScripting signatures in Mail.app, so no random signatures.




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Re: OS High Sierra not seen older systems

Hector I Macedo-3
In reply to this post by Al Varnell
Hi Al, I did try Option at reboot, I’ll try Option/ Alt and let you know.

Thanks

On Oct 10, 2017, at 4:58 PM,10/10/17, Al Varnell <[hidden email]> wrote:


Did you try using Startup Manager to boot from the external (hold down the <Option/Alt>-key at reboot).

Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle




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Re: OS High Sierra not seen older systems

Howard E. Rosenman
Option and Alt are alternate names for the same key. Have you tried setting the Startup Disk in system preferences?
--
Howard E. Rosenman
Everett, WA, USA

On Oct 11, 2017, at 6:50 AM, Hector I Macedo <[hidden email]> wrote:

Hi Al, I did try Option at reboot, I’ll try Option/ Alt and let you know.

Thanks

On Oct 10, 2017, at 4:58 PM,10/10/17, Al Varnell <[hidden email]> wrote:


Did you try using Startup Manager to boot from the external (hold down the <Option/Alt>-key at reboot).

Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle



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Re: OS High Sierra not seen older systems

Hector I Macedo-3
Yes, that was the way I did try, I eventually was able to get “in” by pressing “Control+Option” and now it recognizes the startup HD’s which did not do before.

Hector

On Oct 11, 2017, at 11:30 AM,10/11/17, Howard E. Rosenman <[hidden email]> wrote:

Option and Alt are alternate names for the same key. Have you tried setting the Startup Disk in system preferences?
--
Howard E. Rosenman
Everett, WA, USA

On Oct 11, 2017, at 6:50 AM, Hector I Macedo <[hidden email]> wrote:

Hi Al, I did try Option at reboot, I’ll try Option/ Alt and let you know.

Thanks

On Oct 10, 2017, at 4:58 PM,10/10/17, Al Varnell <[hidden email]> wrote:


Did you try using Startup Manager to boot from the external (hold down the <Option/Alt>-key at reboot).

Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle



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Hector I Macedo

"The trout do not rise in the cemetery, so you better do your fishing
while you are still able." 
- Sparse Grey Hackle




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Re: OS High Sierra not seen older systems

Al Varnell
In reply to this post by Hector I Macedo-3
Sorry to have confused. The Option key is the same as the Alt key. Depending on the type of keyboard you use it may be marked with one or the other name or both.

-Al-

On Wed, Oct 11, 2017 at 06:50 AM, Hector I Macedo wrote:
Hi Al, I did try Option at reboot, I’ll try Option/ Alt and let you know.

Thanks

On Oct 10, 2017, at 4:58 PM,10/10/17, Al Varnell <[hidden email]> wrote:


Did you try using Startup Manager to boot from the external (hold down the <Option/Alt>-key at reboot).

Hector I Macedo



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Re: OS High Sierra not seen older systems

Rodney

> On Oct 12, 2017, at 00:07, Al Varnell <[hidden email]> wrote:
>
> The Option key is the same as the Alt key. Depending on the type of keyboard you use it may be marked with one or the other name or both.

That’s the one that is next to the “Any” key, right? 😉



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