Welcome!
Important information
-- Required MX 15/16 Repository Changes
-- Information on torrent hosting changes
-- Information on MX15/16 GPG Keys
-- Spectre and Meltdown vulnerabilities

News
-- Introducing our new Website
-- MX Linux on social media: here

Current releases
-- MX-18.3 Point Release release info here
-- Migration Information to MX-18 here
-- antiX-17.4.1 release info here

New users
-- Please read this first, and don't forget to add system and hardware information to posts!
-- Here are the Forum Rules

Live MX-18 image on USB fails to boot on iMac

pictonic
Forum Novice
Forum  Novice
Posts: 15
Joined: Wed Jan 23, 2019 5:07 am

Re: Live MX-18 image on USB fails to boot on iMac

#21

Post by pictonic » Mon Jan 28, 2019 10:49 am

After some digging I might have an idea of what one of the messages means - may not be what stops booting.
I get the message "unknown filesystem" when trying to boot.
In the grub command line I can do ls of filesystems and a partition on my hard disk stands out as unrecognised.
It is sda4, which is for common files between linux and macOS. It is formatted as 'exfat' and I had to install tools to allow that to be accessed from linux.
grub does not recognise that partition. Maybe it stops there?
On the installation USB stick there also seems to be no antiX directory, according to ls in grub command mode, however I can see on Arch linux that there is a antiX directory and it does contain vmlinuz, etc.
Speculation is that installation stops when grub reports unknown filesystem. I can't explain the invisible antiX directory, unless my grub doesn't like the case variation.

User avatar
fehlix
Forum Veteran
Forum Veteran
Posts: 3930
Joined: Wed Apr 11, 2018 5:09 pm

Re: Live MX-18 image on USB fails to boot on iMac

#22

Post by fehlix » Mon Jan 28, 2019 11:01 am

pictonic wrote:
Mon Jan 28, 2019 10:49 am
After some digging I might have an idea of what one of the messages means - may not be what stops booting.
I get the message "unknown filesystem" when trying to boot.
In the grub command line I can do ls of filesystems and a partition on my hard disk stands out as unrecognised.
It is sda4, which is for common files between linux and macOS. It is formatted as 'exfat' and I had to install tools to allow that to be accessed from linux.
grub does not recognise that partition. Maybe it stops there?
On the installation USB stick there also seems to be no antiX directory, according to ls in grub command mode, however I can see on Arch linux that there is a antiX directory and it does contain vmlinuz, etc.
Speculation is that installation stops when grub reports unknown filesystem. I can't explain the invisible antiX directory, unless my grub doesn't like the case variation.
How did you created the USB stick from the ISO?
Gigabyte Z77M-D3H, Intel Xeon E3-1240 V2 (Quad core), 32GB RAM,
GeForce GTX 770, Samsung SSD 850 EVO 500GB, Seagate Barracuda 4TB

User avatar
fehlix
Forum Veteran
Forum Veteran
Posts: 3930
Joined: Wed Apr 11, 2018 5:09 pm

Re: Live MX-18 image on USB fails to boot on iMac

#23

Post by fehlix » Mon Jan 28, 2019 11:12 am

pictonic wrote:
Mon Jan 28, 2019 10:49 am
In the grub command line I can do ls of filesystems and a partition on my hard disk stands out as unrecognised.
Hmme not sure abot the exfat thingy...
Can you do this on the grub command line:
When you on the grub commadline
the outputand of these commands, write down and post here:
This command

Code: Select all

ls
and also

Code: Select all

echo $root

Code: Select all

echo $prefix
and

Code: Select all

echo $cmdpath
:puppy:
Gigabyte Z77M-D3H, Intel Xeon E3-1240 V2 (Quad core), 32GB RAM,
GeForce GTX 770, Samsung SSD 850 EVO 500GB, Seagate Barracuda 4TB

User avatar
fehlix
Forum Veteran
Forum Veteran
Posts: 3930
Joined: Wed Apr 11, 2018 5:09 pm

Re: Live MX-18 image on USB fails to boot on iMac

#24

Post by fehlix » Mon Jan 28, 2019 11:31 am

.. and also try this ... on the grub command line
do all three commands :

Code: Select all

search --set=root --file /cdrom.ico

Code: Select all

set prefix="($root)/boot/grub"

Code: Select all

configfile $prefix/grub.cfg

after the last commad you shall see the MX Menu again, and do now try to start MX 18 from the menu.
Good luck
:puppy:
Gigabyte Z77M-D3H, Intel Xeon E3-1240 V2 (Quad core), 32GB RAM,
GeForce GTX 770, Samsung SSD 850 EVO 500GB, Seagate Barracuda 4TB

pictonic
Forum Novice
Forum  Novice
Posts: 15
Joined: Wed Jan 23, 2019 5:07 am

Re: Live MX-18 image on USB fails to boot on iMac

#25

Post by pictonic » Mon Jan 28, 2019 12:21 pm

How did you created the USB stick from the ISO?
I first did dd of the new iso file onto USB from Arch and tested it. Then I reformatted the USB (on mac), copied the new iso to macbook pro 13 and used balenaEtcher to write the stick. Then I tested the result. Same in both cases.

pictonic
Forum Novice
Forum  Novice
Posts: 15
Joined: Wed Jan 23, 2019 5:07 am

Re: Live MX-18 image on USB fails to boot on iMac

#26

Post by pictonic » Mon Jan 28, 2019 12:54 pm

fehlix wrote:
Mon Jan 28, 2019 11:31 am
.. and also try this ... on the grub command line
do all three commands :

Code: Select all

search --set=root --file /cdrom.ico

Code: Select all

set prefix="($root)/boot/grub"

Code: Select all

configfile $prefix/grub.cfg

after the last commad you shall see the MX Menu again, and do now try to start MX 18 from the menu.
Good luck
:puppy:
That worked! Much better menu than the plain grub menu. Live looks very good.
Was able to configure screens easily (this iMac seems to confuse internal and external screens) and got wireless networking added.

I did the commands you asked and here are the responses;
ls: (memdisk) (hd0) (hd1) (hd1,msdos2) (hd2) (hd2,gpt6) (hd2,gpt5) (hd2,gpt4) (hd2,gpt3) (hd2,gpt2) (hd2,gpt1) (cd0)
echo $prefix: (hd1,msdos2)/boot/grub
echo $cmdpath: (hd1,msdos2)/EFI/BOOT
search --set=root --file /cdrom.ico: ...nothing...
set prefix="($root)/boot/grub": ...nothing...
configfile $prefix/grub.cfg: shows MX menu (in colour)

Thanks fehlix. Hope this has helped with the iso. I'll go ahead and install this on iMac instead of ubuntu (very slow and hard to configure).

User avatar
fehlix
Forum Veteran
Forum Veteran
Posts: 3930
Joined: Wed Apr 11, 2018 5:09 pm

Re: Live MX-18 image on USB fails to boot on iMac

#27

Post by fehlix » Mon Jan 28, 2019 1:52 pm

pictonic wrote:
Mon Jan 28, 2019 12:54 pm
Hope this has helped with the iso. I'll go ahead and install this on iMac ..
Great that it worked. Yes that helps us. Thank you very much, to identify this issue.
:puppy:
Gigabyte Z77M-D3H, Intel Xeon E3-1240 V2 (Quad core), 32GB RAM,
GeForce GTX 770, Samsung SSD 850 EVO 500GB, Seagate Barracuda 4TB

pictonic
Forum Novice
Forum  Novice
Posts: 15
Joined: Wed Jan 23, 2019 5:07 am

Re: Live MX-18 image on USB fails to boot on iMac

#28

Post by pictonic » Tue Jan 29, 2019 3:27 am

fehlix: Sorry, just realised I didn't give you the result of one of those grub commands.
It might have been important so here it is:
echo $root: hd0

User avatar
fehlix
Forum Veteran
Forum Veteran
Posts: 3930
Joined: Wed Apr 11, 2018 5:09 pm

Re: Live MX-18 image on USB fails to boot on iMac

#29

Post by fehlix » Tue Jan 29, 2019 8:18 am

pictonic wrote:
Tue Jan 29, 2019 3:27 am
fehlix: Sorry, just realised I didn't give you the result of one of those grub commands.
It might have been important so here it is:
echo $root: hd0
Thanks. Actually I guessed it already ;=) ... we might have a fixed version asap. available.
Btw, how is MX linux behaving on this iMac? Everything ok?
:puppy:
Gigabyte Z77M-D3H, Intel Xeon E3-1240 V2 (Quad core), 32GB RAM,
GeForce GTX 770, Samsung SSD 850 EVO 500GB, Seagate Barracuda 4TB

pictonic
Forum Novice
Forum  Novice
Posts: 15
Joined: Wed Jan 23, 2019 5:07 am

Re: Live MX-18 image on USB fails to boot on iMac

#30

Post by pictonic » Sat Mar 09, 2019 4:28 am

I have deleted MX from my iMac in order to test your new version 18.1.
It was working well otherwise; maybe slow updates, but I was used to Arch on the bleeding edge.

Install of 18.1 behaves the same way as before, giving me errors before getting to the grub menu
error: unknown filesystem
error: you need to load the kernel first

I went through the manual steps you gave me in grub shell and got a good boot menu as before.
Whatever is in version 18.1 does not fix my boot problem.

Post Reply

Return to “Forum How-to's”