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 61 
 on: July 30, 2017, 10:25:16 am 
Started by nightflier - Last post by nightflier
Error reading bootsector: Input/output error
Failed to mount '/dev/sr0': Input/output error

This error indicates a problem with the optical drive, or the medium in it.  If several different CD/DVDs show the same error, suspect hardware in the drive, cable or controller.

 62 
 on: July 30, 2017, 07:23:44 am 
Started by nightflier - Last post by vincent2
Please post output of commands:
ls -al /media
mount /dev/sr0

Quote
ls -al /media
total 12
drwxr-xr-x 16 root root 4096 Jul 15 18:21 ./
drwxr-xr-x 22 root root 4096 Jul 30 21:08 ../
-rw-r--r--  1 root root  500 Sep 26  2006 README
lrwxrwxrwx  1 root root   11 Jul 15 18:21 cdrecorder -> cdrecorder0/
drwxr-xr-x  2 root root    6 Sep 26  2006 cdrecorder0/
drwxr-xr-x  2 root root    6 Sep 26  2006 cdrecorder1/
lrwxrwxrwx  1 root root    6 Jul 15 18:21 cdrom -> cdrom0/
drwxr-xr-x  2 root root    6 Sep 26  2006 cdrom0/
drwxr-xr-x  2 root root    6 Sep 26  2006 cdrom1/
lrwxrwxrwx  1 root root    4 Jul 15 18:21 dvd -> dvd0/
drwxr-xr-x  2 root root    6 Sep 26  2006 dvd0/
drwxr-xr-x  2 root root    6 Sep 26  2006 dvd1/
lrwxrwxrwx  1 root root    7 Jul 15 18:21 floppy -> floppy0/
drwxr-xr-x  2 root root    6 Sep 26  2006 floppy0/
drwxr-xr-x  2 root root    6 Sep 26  2006 floppy1/
lrwxrwxrwx  1 root root    3 Jul 15 18:21 hd -> hd0/
drwxr-xr-x  2 root root    6 Sep 26  2006 hd0/
drwxr-xr-x  2 root root    6 Sep 26  2006 hd1/
lrwxrwxrwx  1 root root    7 Jul 15 18:21 memory -> memory0/
drwxr-xr-x  2 root root    6 Sep 26  2006 memory0/
drwxr-xr-x  2 root root    6 Sep 26  2006 memory1/
lrwxrwxrwx  1 root root    4 Jul 15 18:21 zip -> zip0/
drwxr-xr-x  2 root root    6 Sep 26  2006 zip0/
drwxr-xr-x  2 root root    6 Sep 26  2006 zip1/

Quote
$ mount /dev/sr0
Error reading bootsector: Input/output error
Failed to mount '/dev/sr0': Input/output error
NTFS is either inconsistent, or there is a hardware fault, or it's a
SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows
then reboot into Windows twice. The usage of the /f parameter is very
important! If the device is a SoftRAID/FakeRAID then first activate
it and mount a different device under the /dev/mapper/ directory, (e.g.
/dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation
for more details.

 63 
 on: July 30, 2017, 04:35:25 am 
Started by nightflier - Last post by nightflier
Please post output of commands:
ls -al /media
mount /dev/sr0

 64 
 on: July 30, 2017, 04:28:15 am 
Started by StrayBit - Last post by nightflier
Sorry, didn't read op closely enough, looks like the permissions on folder where sda3 is mounted (/mnt/Public) restricts write to root only.

A search suggests a need for a umask option in fstab:
http://www.linuxquestions.org/questions/linux-newbie-8/write-permissions-in-etc-fstab-for-vfat-filesystem-376215/

 65 
 on: July 30, 2017, 03:32:03 am 
Started by black-clover - Last post by retired1af
With Secure Boot, the bootloader must be "signed" with a digital key that's contained in the firmware.

Here's a bit of a "how does it work".

https://askubuntu.com/questions/874584/how-does-secure-boot-actually-work

 66 
 on: July 30, 2017, 02:31:23 am 
Started by black-clover - Last post by black-clover
thanks for the answer,  but what is a "signed" version of grub?  :-[

 67 
 on: July 29, 2017, 08:19:55 pm 
Started by nightflier - Last post by vincent2
Assuming your optical drive is identified as /dev/sr0, add this line to /etc/fstab:
Code: [Select]
/dev/sr0 /media/cdrom auto ro,user,noauto,unhide 0 0

tried, it doesn't work, still can\t mount cd

 68 
 on: July 29, 2017, 05:38:39 pm 
Started by black-clover - Last post by retired1af
Depending on your machine and whether it has UEFI activated or not, you may need to use a "signed" version of Grub. When I install VL, I do not install the bootloader and use Mint's signed copy of Grub instead.

 69 
 on: July 29, 2017, 04:02:13 pm 
Started by black-clover - Last post by black-clover
I have a main VL-7.2-STD distro on my laptop and a spare partition which I use to try different distros that pick my fancy.
Twice, on different distros that I have installed (Calculate Linux and Manjaro) I had a strange problem.
After running update-grub on my main VL distro, the newly installed distro had problems at booting, once systemd didn't couldn't load the kernel modules and another dracut was erased.
If I reinstalled the distro and did not run update-grub, and leave the old entry with the proper kernel name, it would work just fine.
Therefore, I deduce that the problem is with updating grub.
By the way, this did not happen if on the spare partition in installed VL, only with other distros.
Is there any issue with updating Grub which I should take into account?


 70 
 on: July 29, 2017, 03:25:41 pm 
Started by StrayBit - Last post by StrayBit
Would I need to change fstab shown above?

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