Ask Ubuntu General Room

no ! puh ... not mount to /various

Thomas Ward

@Fabby not to / simultaneously, you'd have one clobber the other for dominance. And a lot of selfdestruction

create a folder with the name "various" on sdb4 ... put the iso in that folder

@cl-netbox OK.

set isofile="/various/gparted-live-0.31.0-1-amd64.iso"

the iso has to be in the folder various on sdb4

6:04 PM

fab-root@fab-ux-predator:/various/various
$ whichdisk gparted-live-0.31.0-1-amd64.iso
/dev/sdb4

editing 40_custom

update-grub2

[cl@cl-fw-1 ~]$ sudo ls -l /run/media/cl/system/various
total 566284
-rw-rwxr--+ 1 cl cl 246415360 12. Apr 11:10 clonezilla-live-2.5.5-38-amd64.iso
-rw-rwxr--+ 1 qemu qemu 333447168 21. Mär 08:50 gparted-live-0.31.0-1-amd64.iso

doing same

sudo ls -l /various/various/gparted-live-0.31.0-1-amd64.iso
-rw-r--r-- 1 root root 333447168 Apr 16 19:53 /various/various/gparted-live-0.31.0-1-amd64.iso

wrong

why /various/various ?

don't forget sdb4 is mounted to /various

what are you doing ?

6:08 PM

I can re-mount it to /mnt

I made a mistake earlier.

no

please tell me the label of sdb4

checking

no label

create the label system

remove the mount point

this way it will never work

fab-root@fab-ux-predator:~
$ sudo umount /dev/sdb4
fab-root@fab-ux-predator:~
$ sudo rd /various/
fab-root@fab-ux-predator:~
$

Which label do you want sdb4 to have? @cl-netbox

@Fabby system ... then umount it

6:15 PM

It's ext4. Does it need to be FAT?

@Fabby ext4 is okay

please unmount that partition

I think we must be misunderstanding one another: to label sdb4 (name it) it must be unmounted.

then open Nautilus

yes it has to be unmounted

nemo open

not name ... LABEL @Fabby

6:18 PM

Yupo

changing...

then open nautilus click on other locations

then click the partition system

now create a folder various

put the iso in that folder

done @Fabby ?

Where is other locations?

nautilus

left sidebar

system label

good

6:22 PM

nautilus

@Fabby is that ubuntu nautilus ?

Yup, sandard Nautilus

what ??? how old is your system ???

16.04

I like LTS and I use nemo anyway.

okay ... please give me ls -l /media/user/system

6:26 PM

So where do you want me to mount sdb4?

ubuntu automatically mounts to /media/user

no it doesn't:

fab-root@fab-ux-predator:~
$ ls /media/fab-root/

nothing there.

please mount it to that directory

do you want me to mount /dev/sdb4 in

OK

create the folder various

put the iso in that folder

done ?

6:29 PM

fab-root@fab-ux-predator:~
$ sudo mount /dev/sdb4 /media/fab-root/
fab-root@fab-ux-predator:~
$ sudo md /media/fab-root/various
fab-root@fab-ux-predator:~
$

what is that various there ?

copying

it has to be media/fab-root/system

you labeléd sdb4 as system

huh? the label of the partition sdb4 is now system

sudo mount /dev/sdb4 /media/fab-root/ has to show /media/fab-root/system

6:32 PM

root@fab-ux-predator:/media/fab-root/various
# whichdisk
/dev/sdb4
root@fab-ux-predator:/media/fab-root/various
# ll
total 319M
drwxr-xr-x 2 root root 4.0K Apr 16 20:30 ./
drwxr-xr-x 4 root root 4.0K Apr 16 20:28 ../
-rw-r--r-- 1 root root 318M Apr 16 20:31 gparted-live-0.31.0-1-amd64.iso

please create a new folder various there

@cl-netbox no it didn't

you showed me the screenshot where sdb4 was system

best is you reboot

Yup, but when I did the command:
sudo mount /dev/sdb4 /media/fab-root/

reboot

6:34 PM

it mounted /dev/sdb4 in /media/fab-root

not in /media/fab-root/system

[cl@cl-fw-1 ~]$ ls -l /run/media/cl
total 40
drwxrwxrwx+ 14 cl cl 4096 26. Mär 13:22 data
drwxrwxrwx+ 12 cl cl 4096 22. Nov 2016 media
drwxrwxrwx+ 10 cl cl 4096 16. Nov 12:01 rescue
drwxrwxrwx+ 12 cl cl 4096 3. Okt 2017 system
drwxrwxrwx+ 7 cl cl 4096 21. Feb 10:26 virtual

root@fab-ux-predator:/media/fab-root/various
# df -P gparted-live-0.31.0-1-amd64.iso
Filesystem     1024-blocks   Used Available Capacity Mounted on
/dev/sdb4          3997376 333820   3437460       9% /media/fab-root

please reboot the system

and try booting iso?

C U in 2 minutes...

no reboot and then give me ls -l /media/fab-root after you mounted sdb4 there @Fabby

we are close to get it done

I hope ... :)

6:47 PM

damn

I missed that: I rebooted.

fab-root@fab-ux-predator:~
$ ls -l /media/fab-root/
total 0
fab-root@fab-ux-predator:~
$ sudo mount /dev/sdb4 /media/fab-root/
[sudo] password for fab-root:
fab-root@fab-ux-predator:~
$ ls -l /media/fab-root/
total 20
drwx------ 2 root root 16384 Apr 16 20:19 lost+found
drwxr-xr-x 2 root root  4096 Apr 16 20:30 various

@Fabby okay please wait

Going for a smoke. 3 minutes... @cl-netbox

@Fabby now ls -l /media/fab-root/various please

fab-root@fab-ux-predator:~
$ sudo -s
0 packages can be updated.
0 updates are security updates.
root@fab-ux-predator:~
# cd /media/fab-root/various/
root@fab-ux-predator:/media/fab-root/various
# ls -l
total 325632
-rw-r--r-- 1 root root 333447168 Apr 16 20:31 gparted-live-0.31.0-1-amd64.iso

it was made under toot, so changing to root now.

root@fab-ux-predator:/media/fab-root/various
$df --portability gparted-live-0.31.0-1-amd64.iso
Filesystem     1024-blocks   Used Available Capacity Mounted on
/dev/sdb4          3997376 333820   3437460       9% /media/fab-root

@Fabby this means that the label system was not set ... one more proof that one should never work with disks from within a running system

6:58 PM

One thing I'm thinking of is: sdb is an SSD

not a HDD

Does that matter to grub?

completely unimportant ...anyway ... now create a folder various there

put the iso into that folder

It's already there and owned by root

root@fab-ux-predator: /media/fab-root/various
# ls -l
total 325632
-rw-r--r-- 1 root root 333447168 Apr 16 20:31 gparted-live-0.31.0-1-amd64.iso

aha

it is on the top dir

not in a folder

wait please

huh? no...

menuentry "gparted" {
set isofile="/gparted-live-0.31.0-1-amd64.iso"
loopback loop (hd1,4)$isofile
linuxefi (loop)/live/vmlinuz boot=live components config findiso=$isofile ip=frommedia toram=filesystem.squashfs union=overlay username=user
initrdefi (loop)/live/initrd.img
}

sudo update-grub

7:01 PM

Hold on, look here:

root@fab-ux-predator:/media
# df --portability .
Filesystem 1024-blocks Used Available Capacity Mounted on

Seth

@Fabby I managed to setup fan control properly so it's working out pretty good now!

/dev/sdb2 61388820 22158432 36088964 39% /

Seth

Graphics card is a tad on the old side so it still stutters when I play certain games but it's an overall improvement from integrated graphics xD

@Fabby what do you want with sdb2 now ?

# df --portability fab-root/various/
Filesystem 1024-blocks Used Available Capacity Mounted on

/dev/sdb4 3997376 333820 3437460 9% /media/fab-root

7:03 PM

Please Fabby :

menuentry "gparted" {
set isofile="/gparted-live-0.31.0-1-amd64.iso"
loopback loop (hd1,4)$isofile
linuxefi (loop)/live/vmlinuz boot=live components config findiso=$isofile ip=frommedia toram=filesystem.squashfs union=overlay username=user
initrdefi (loop)/live/initrd.img
}

so media is on sdb2 but /media/fab-root is on sdb4

and there is a directory various and that's where the file is!

Following orders, sir!

e 40_custom

then sudo update-grub

then try if iso boots

update-grub2, right?

root@fab-ux-predator:/media
# e /etc/grub.d/40_custom
root@fab-ux-predator:/media
# update-grub2
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.13.0-38-generic
Found initrd image: /boot/initrd.img-4.13.0-38-generic
Found linux image: /boot/vmlinuz-4.13.0-37-generic
Found initrd image: /boot/initrd.img-4.13.0-37-generic
Found linux image: /boot/vmlinuz-4.13.0-36-generic
Found initrd image: /boot/initrd.img-4.13.0-36-generic
Found linux image: /boot/vmlinuz-4.13.0-32-generic

@Seth I'm happy for ya! :-)

@Fabby sorry ?

Sorry!

reboot?

7:07 PM

@Fabby sudo update-grub

@Fabby yup ... try to boot the iso

root@fab-ux-predator:/media
# update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.13.0-38-generic
Found initrd image: /boot/initrd.img-4.13.0-38-generic
Found linux image: /boot/vmlinuz-4.13.0-37-generic
Found initrd image: /boot/initrd.img-4.13.0-37-generic
Found linux image: /boot/vmlinuz-4.13.0-36-generic
Found initrd image: /boot/initrd.img-4.13.0-36-generic
Found linux image: /boot/vmlinuz-4.13.0-32-generic
Found initrd image: /boot/initrd.img-4.13.0-32-generic

rebooting. C U in 2 minutes.

okay :)

back

see hangouts for screenshot

the file is on sdb4 in various

root@fab-ux-predator:~
# mount /dev/sdb4 /media/fab-root/

in the folder ?

root@fab-ux-predator:~
# cd /media/fab-root/various/
root@fab-ux-predator:/media/fab-root/various
# ls -l
total 325632
-rw-r--r-- 1 root root 333447168 Apr 16 20:31 gparted-live-0.31.0-1-amd64.iso

7:14 PM

strange ... one more try :

menuentry "gparted" {
set isofile="/various/gparted-live-0.31.0-1-amd64.iso"
loopback loop (hd1,4)$isofile
linuxefi (loop)/live/vmlinuz boot=live components config findiso=$isofile ip=frommedia toram=filesystem.squashfs union=overlay username=user
initrdefi (loop)/live/initrd.img
}

sudo update-grub

OK, executing!

# update-grub
Generating grub configuration file ...
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-4.10.0-35-generic
Found initrd image: /boot/initrd.img-4.10.0-35-generic
Found linux image: /boot/vmlinuz-4.10.0-33-generic
Found initrd image: /boot/initrd.img-4.10.0-33-generic
Found linux image: /boot/vmlinuz-4.4.0-96-generic
Found initrd image: /boot/initrd.img-4.4.0-96-generic
Adding boot menu entry for EFI firmware configuration

adds noise

root@fab-ux-predator:/media/fab-root/various
# e /etc/grub.d/40_custom
root@fab-ux-predator:/media/fab-root/various
# update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.13.0-38-generic
Found initrd image: /boot/initrd.img-4.13.0-38-generic
Found linux image: /boot/vmlinuz-4.13.0-37-generic
Found initrd image: /boot/initrd.img-4.13.0-37-generic
Found linux image: /boot/vmlinuz-4.13.0-36-generic
Found initrd image: /boot/initrd.img-4.13.0-36-generic
Found linux image: /boot/vmlinuz-4.13.0-32-generic

rebooting

back @cl-netbox see screenshot in hangouts.

I'm going to boot into busybox and see what the name of the SSD is in grub

maybe it's a weirdo one

@Fabby please compare it with my disk setup :

these are the partitions from my second built-in disk being mounted ->

[cl@cl-fw-1 ~]$ ls -l /run/media/cl
total 40
drwxrwxrwx+ 14 cl cl 4096 26. Mär 13:22 data
drwxrwxrwx+ 12 cl cl 4096 22. Nov 2016 media
drwxrwxrwx+ 10 cl cl 4096 16. Nov 12:01 rescue
drwxrwxrwx+ 12 cl cl 4096 3. Okt 2017 system
drwxrwxrwx+ 7 cl cl 4096 21. Feb 10:26 virtual

Q: Removing a USB device but leaving power?

now do a:

df --portability /run/media/cl/data | tail -1 | cut --delimiter=' ' --fields 1

df --portability /run/media/cl/media | tail -1 | cut --delimiter=' ' --fields 1

df --portability /run/media/cl/rescue | tail -1 | cut --delimiter=' ' --fields 1

df --portability /run/media/cl/system | tail -1 | cut --delimiter=' ' --fields 1

df --portability /run/media/cl/virtual | tail -1 | cut --delimiter=' ' --fields 1

@cl-netbox ----^please?

then create an alias for df --portability $1 | tail -1 | cut --delimiter=' ' --fields 1 and call it whichdisk

;-) :-) ;-)

Ubuntu Questions on U&L

7:25 PM

1

I have a dashcam in my RV that is plugged into my Asus Tinkerboard (like an RPi). It is getting power from the usb port of the tinker. I would like to leave it connected to the tinker so that I can access the files remotely. The problem is that the camera detects access of the file system and swi...

no idea what that should be good for ... but here is the output :
[cl@cl-fw-1 ~]$ df --portability /run/media/cl/data | tail -1 | cut --delimiter=' ' --fields 1
/dev/sda1

@Fabby cut the cut: df --output=source $1 | tail -1

@dessert trying

Cool!

@Fabby all that is unimportant for what we want to achieve ... the entries have to match EXACTLY the real location where the iso file resides ! :)

Found this in grub.cfg:
set root='hd1,gpt2'

going to try the following:

loopback loop (hd1,gpt4)$isofile

rebooting

BRB

7:39 PM

@Fabby I have to go now - please excuse me - in case it still doesn't work : we have to continue tomorrow ... good night and sleep well ... bye :)

@cl-netbox sleep tight!

maybe take a (chat ;P) room then – not that I don't like the activity, this room's often dead silent at times like that, but it'll make it much easier to keep track, especially when lots of terminal output is exchanged…

@cl-netbox Good night and thanks for all the blood, sweat and tears!

at least you don't get interrupted by chatty bots and sneaky mods there ;)

TheXed

9:46 PM

My CPU won't go under 24c annoying...

10:14 PM

@TheXed You have a few solutions for that:

1. turn it off

2. work in a freezer

3. buy a can of CO2, turn it upside down, spray directy onto CPU.

>:-)

@cl-netbox: found it!

My machine doesn't start counting from 0 for its HDDs in grub.

so I went to the grub menu, pressed 'c' and did an ls and found:

(hd0) (hd1) (hd1,gpt4) (hd1,gpt3) (hd1,gpt2) (hd1,gpt1) (hd2) ... (hd3) ...

so hd0 is present but not recognised as a HD as it gave some error too, so I think it must be the NVRAM that has file storage defined in EFI or something similarly stupid.

So I was right all the time, you were right all the time, but the compter was wrong!!!

:D :D :D

cc @dessert @ByteCommander

Byte Commander

nice

nice finding, you should write a Q&A about it

true... going to do that now @dessert

10:31 PM

@Fabby ping me when it's ready :) I'm going to sleep, half my family is vomiting now and I have seen enough of it for one day. :D

Gute nacht! (Grippe???)

TheXed

@Fabby lol. None of which are reasonable solutions.

Bloodhound Gang - Diarrhea Runs In The Family

@Fabby Gastroenteritis I suppose, first the baby, then the three-year-old, now my wife and the six-year-old.

►

;)