[Bug 906125] [NEW] apt can't find "CD" when using a usb stick

[Len Ovens]

Public bug reported:

When installing ubuntustudio 12.04 alternate (alpha) from a usb stick.
(this may affect ubuntuserver as well) There is a spot when I can choose
"work flows" to install. (server allows choosing services to install) If
I choose less than all of the choices and then after install decide I
missed one... I would insert the usb stick I installed from in place of
the cdrom... then I can set apt to search the "cdrom" with the
settings->software sources applet. by Checking cdrom on. I get this
applet from the update manager or synaptic as well. Anyway, both
aptitude and synaptic will show me the meta package I want to install,
but both also tell me to insert the install cdrom... which I don't have
(no drive in fact) and do not see the usbstick. So, I mount the
usbstick... it mounts at /media/G8, I mv cdrom romcd and then ln -s G8
cdrom This makes a link and I can see the right files in /media/cdrom. I
try one of the two install programs again.... they dismount G8 and try
to mount the "cdrom" and I get the same error message. Try two. I
remount G8 my usb stick with the iso image and the link is again valid.
I take a terminal session and cd into a directory on the usb stick and
do an ls to see it is there. This makes the usb stick "busy" and not
able to be unmounted. Now I can install the missing software.

As there are many newer computers with no dvd/cdrom drive, there needs
to be either a mounter that mounts the usb stick as if it was the cdrom
or a second option that looks for a usb stick instead of a cdrom. This
would be the case if I had custom software on a usb stick too... I guess
this is really a bug for choosing software sources. It just seems that
If I use a USB stick instead of a disk for the original install, when I
select "cdrom" to add stuff later it should accept a usb stick then too.

** Affects: aptitude (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/906125

Title:
  apt can't find "CD" when using a usb stick

Status in “aptitude” package in Ubuntu:
  New

Bug description:
  When installing ubuntustudio 12.04 alternate (alpha) from a usb stick.
  (this may affect ubuntuserver as well) There is a spot when I can
  choose "work flows" to install. (server allows choosing services to
  install) If I choose less than all of the choices and then after
  install decide I missed one... I would insert the usb stick I
  installed from in place of the cdrom... then I can set apt to search
  the "cdrom" with the settings->software sources applet. by Checking
  cdrom on. I get this applet from the update manager or synaptic as
  well. Anyway, both aptitude and synaptic will show me the meta package
  I want to install, but both also tell me to insert the install
  cdrom... which I don't have (no drive in fact) and do not see the
  usbstick. So, I mount the usbstick... it mounts at /media/G8, I mv
  cdrom romcd and then ln -s G8 cdrom This makes a link and I can see
  the right files in /media/cdrom. I try one of the two install programs
  again.... they dismount G8 and try to mount the "cdrom" and I get the
  same error message. Try two. I remount G8 my usb stick with the iso
  image and the link is again valid. I take a terminal session and cd
  into a directory on the usb stick and do an ls to see it is there.
  This makes the usb stick "busy" and not able to be unmounted. Now I
  can install the missing software.

  As there are many newer computers with no dvd/cdrom drive, there needs
  to be either a mounter that mounts the usb stick as if it was the
  cdrom or a second option that looks for a usb stick instead of a
  cdrom. This would be the case if I had custom software on a usb stick
  too... I guess this is really a bug for choosing software sources. It
  just seems that If I use a USB stick instead of a disk for the
  original install, when I select "cdrom" to add stuff later it should
  accept a usb stick then too.

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