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Old 11-10-2019, 03:00 PM   #1
linustalman
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Question Error messages on bootup: "open failed: No medium found".


Hi.

I use LUKS and my drive is dev/sda1. My PC boots fine.

However, on bootup, I get these messages:

Code:
/dev/sdb: open failed: No medium found
/dev/sdc: open failed: No medium found
/dev/sdd: open failed: No medium found
/dev/sde: open failed: No medium found
/dev/sdb: open failed: No medium found
/dev/sdc: open failed: No medium found
/dev/sdd: open failed: No medium found
/dev/sde: open failed: No medium found
Why am I getting these messages and can it be remedied?

Thanks.
 
Old 11-10-2019, 11:26 PM   #2
RandomTroll
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Because you have entries for all those devices in /etc/fstab but they don't exist. I get the same for entries for removable drives that aren't installed at boot: that's not a problem. If you actually have hardware attached to all those devices then there's a problem with them.
 
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Old 11-12-2019, 07:41 AM   #3
linustalman
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Quote:
Originally Posted by RandomTroll View Post
Because you have entries for all those devices in /etc/fstab but they don't exist. I get the same for entries for removable drives that aren't installed at boot: that's not a problem. If you actually have hardware attached to all those devices then there's a problem with them.
Hi RT.

The only sda entry in my fstab file is this comment line:
Code:
# /boot was on /dev/sda1 during installation
 
Old 11-12-2019, 07:48 AM   #4
jsbjsb001
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Where are you seeing these messages? Your system logs? Because without knowing exactly where they are coming from, it's hard to say much else beyond what was said above.

It would be helpful to know what program is causing these messages.

If they are in your system logs, then you would need to post the relevant part of the log - as in the whole line of each message. As this might tell you what is actually causing them.
 
Old 11-12-2019, 07:53 AM   #5
linustalman
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Quote:
Originally Posted by jsbjsb001 View Post
Where are you seeing these messages? Your system logs? Because without knowing exactly where they are coming from, it's hard to say much else beyond what was said above.

It would be helpful to know what program is causing these messages.

If they are in your system logs, then you would need to post the relevant part of the log - as in the whole line of each message. As this might tell you what is actually causing them.
Hi jsbjsb001.

I replaced my PC name with 'XXXXX'. BTW, I use LUKS full disk encryption.

I ran this to get them:

Code:
sudo cat /var/log/boot.log
Code:
  Volume group "XXXXXX-vg" not found
  Cannot process volume group XXXXX-vg
  Volume group "XXXXXX-vg" not found
  Cannot process volume group XXXXX-vg
/dev/sdb: open failed: No medium found
/dev/sdc: open failed: No medium found
/dev/sdd: open failed: No medium found
/dev/sde: open failed: No medium found
  /dev/sdb: open failed: No medium found
  /dev/sdc: open failed: No medium found
  /dev/sdd: open failed: No medium found
  /dev/sde: open failed: No medium found
/dev/mapper/XXXXX--vg-root: clean, 882426/121028608 files, 153652035/484100096 blocks
 
Old 11-12-2019, 08:00 AM   #6
jsbjsb001
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It looks like it's coming from LVM based on your output of boot.log above.

But while I have done some reading about LVM, and get at least the basic idea of it; I don't use it myself. So I'm not an "expert" on it. So all I can suggest is to read up about it, and find out how you configure it so it isn't looking for something that doesn't appear to be there.

Then again, if your system still boots and there's no actual problem(s), you could just ignore it...
 
Old 11-12-2019, 06:54 PM   #7
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Quote:
Originally Posted by linustalman View Post
Hi RT.

The only sda entry in my fstab file is this comment line:
Code:
# /boot was on /dev/sda1 during installation
The error messages are about /dev/sd[b-g], not /dev/sda. That's a comment in your fstab. Perhaps these other devices are aliased?

Do they exist physically?
 
Old 11-12-2019, 07:40 PM   #8
colorpurple21859
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post your grub.cfg
 
Old 11-13-2019, 05:37 AM   #9
linustalman
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Question

Quote:
Originally Posted by colorpurple21859 View Post
post your grub.cfg
Hi colorpurple21859. Do you refer to '/etc/default/grub'?
 
Old 11-13-2019, 05:37 AM   #10
linustalman
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Quote:
Originally Posted by RandomTroll View Post
The error messages are about /dev/sd[b-g], not /dev/sda. That's a comment in your fstab. Perhaps these other devices are aliased?

Do they exist physically?
I just noticed these items in GNOME Disk Utility [see 4 attached images]. I've no idea what they are. Maybe just placeholders?.
Attached Thumbnails
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ID:	31834  

Last edited by linustalman; 11-13-2019 at 05:38 AM.
 
Old 11-13-2019, 05:58 AM   #11
jsbjsb001
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The drives you've highlighted in your screenshots are from a card reader - ie. a SD/CF/SM/MS card reader.

So yes, they basically are like "placeholders", but not sure why something is trying to open them on bootup though.
 
Old 11-13-2019, 06:14 AM   #12
colorpurple21859
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/boot/grub/grub.cfg (assuming this is debian)
also the output of
Code:
lvm dumpconfig

Last edited by colorpurple21859; 11-13-2019 at 06:15 AM.
 
Old 11-13-2019, 07:10 AM   #13
linustalman
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Quote:
Originally Posted by colorpurple21859 View Post
/boot/grub/grub.cfg (assuming this is debian)
also the output of
Code:
lvm dumpconfig
I see. BTE, is there any sensitive data in that file that I should redact? I will post it soon.
 
  


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