Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #211563 > unrolled thread

Re: Buster installer on USB searches for CDROM instead of using USB drive

Back to article view | Back to linux.debian.user

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: Buster installer on USB searches for CDROM instead of using USB drive "Thomas Schmitt" <scdbackup@gmx.net> - 2019-07-20 14:30 +0200
    Re: Buster installer on USB searches for CDROM instead of using USB  drive basti <mailinglist@unix-solution.de> - 2019-07-27 19:00 +0200
      Re: Buster installer on USB searches for CDROM instead of using USB  drive Brian <ad44@cityscape.co.uk> - 2019-07-27 19:10 +0200
      Re: Buster installer on USB searches for CDROM instead of using USB drive "Thomas Schmitt" <scdbackup@gmx.net> - 2019-07-27 19:20 +0200
    Re: Buster installer on USB searches for CDROM instead of using USB  drive basti <basti@unix-solution.de> - 2019-07-27 19:10 +0200

#211563 — Re: Buster installer on USB searches for CDROM instead of using USB drive

Hi,

TomK/Brian_S <forensic@milwpc.com> wrote:
> I disabled all boot devices in the BIOS, except the USB drive. It works
> now.

This is surprising and unplausible even within the usual range of firmware
madness.

I understand that the "mount CDROM step" is performed by a Linux kernel
on behalf of software in the initial RAM disk. The boot device settings of
the firmware should have no influence on the Linux kernel.

Since i suspect a race condition between kernel device assessment and
assessment requests by the initrd, your success might be pure luck.
Or your failure might have been pure bad luck.
Not many others complain about problems with Debian 10 ISOs on USB stick.

Well, it will hardly be fixed unless somebody can make it reproducible
and perform experiments to find ways to make it non-reproducible.


Have a nice day :)

Thomas

[toc] | [next] | [standalone]

#211799 — Re: Buster installer on USB searches for CDROM instead of using USB drive

Hello,
I have the same problem, with netinstall iso on usb stick it search for
cd at hatdware detection step ab abort this with an error.

usb stick is create with unetbootin an test in kvm.

On 20.07.19 14:20, Thomas Schmitt wrote:
> Hi,
> 
> TomK/Brian_S <forensic@milwpc.com> wrote:
>> I disabled all boot devices in the BIOS, except the USB drive. It works
>> now.
> 
> This is surprising and unplausible even within the usual range of firmware
> madness.
> 
> I understand that the "mount CDROM step" is performed by a Linux kernel
> on behalf of software in the initial RAM disk. The boot device settings of
> the firmware should have no influence on the Linux kernel.
> 
> Since i suspect a race condition between kernel device assessment and
> assessment requests by the initrd, your success might be pure luck.
> Or your failure might have been pure bad luck.
> Not many others complain about problems with Debian 10 ISOs on USB stick.
> 
> Well, it will hardly be fixed unless somebody can make it reproducible
> and perform experiments to find ways to make it non-reproducible.
> 
> 
> Have a nice day :)
> 
> Thomas
> 

[toc] | [prev] | [next] | [standalone]

#211802 — Re: Buster installer on USB searches for CDROM instead of using USB drive

On Sat 27 Jul 2019 at 18:51:37 +0200, basti wrote:

> usb stick is create with unetbootin an test in kvm.

It's amazing! We have an Installation Guide. Is it read? When it
is read, how many ignore the advice? Even users with experience
of Debian.

-- 
Brian.

[toc] | [prev] | [next] | [standalone]

#211803

Hi,

basti wrote:
> I have the same problem, with netinstall iso on usb stick it search for
> cd at hatdware detection step ab abort this with an error.
>
> usb stick is create with unetbootin an test in kvm.

Does the trick of
  https://askubuntu.com/questions/671159/bootable-usb-needs-cd-rom
work for you ?

  Once I get the "Your installation CD-ROM couldn't be mounted..."
  message and I'm back at the main Ubuntu Server install screen, I
  simply plugged the USB thumbdrive out, then plugged it in again,
  and then after pressing the "detect CD" option, I got "The CD-ROM
  autodetection was successful... The installation will now continue."
  ... and so the installation continued.

(Actually i suspect that re-trying did the trick, not re-plugging.)


Using unetbootin is not the currently recommended way to put a bootable
Debian ISO onto USB stick.
For GNU/Linux or other Unixes see
  https://www.debian.org/CD/faq/#write-usb
On MS-Windos, the program Rufus in its "dd" mode is supposed to do it right.


Have a nice day :)

Thomas

[toc] | [prev] | [next] | [standalone]

#211801 — Re: Buster installer on USB searches for CDROM instead of using USB drive

Hello,
I have the same problem, with netinstall iso on usb stick it search for
cd at hatdware detection step ab abort this with an error.

usb stick is create with unetbootin an test in kvm.

On 20.07.19 14:20, Thomas Schmitt wrote:
> Hi,
> 
> TomK/Brian_S <forensic@milwpc.com> wrote:
>> I disabled all boot devices in the BIOS, except the USB drive. It works
>> now.
> 
> This is surprising and unplausible even within the usual range of firmware
> madness.
> 
> I understand that the "mount CDROM step" is performed by a Linux kernel
> on behalf of software in the initial RAM disk. The boot device settings of
> the firmware should have no influence on the Linux kernel.
> 
> Since i suspect a race condition between kernel device assessment and
> assessment requests by the initrd, your success might be pure luck.
> Or your failure might have been pure bad luck.
> Not many others complain about problems with Debian 10 ISOs on USB stick.
> 
> Well, it will hardly be fixed unless somebody can make it reproducible
> and perform experiments to find ways to make it non-reproducible.
> 
> 
> Have a nice day :)
> 
> Thomas
> 

[toc] | [prev] | [standalone]

Back to top | Article view | linux.debian.user

csiph-web