[Bug 778319] Re: Installation via USB-stick impossible

[Miroslav Matějů]

Same problem here when trying to installing Ubuntu 14.04.3 LTS Server
x64 using the media created by both Linux Live Usb Creator and
UNetbootin. After the error message appeared, I tried to mount the drive
manually as suggested by Vladimir and Jav but still no success. The CD-
ROM integrity check (available from the installer menu) reports that
checksum of ./pool/main/m/maas/python-maas-
provisioningserver_1.7.6+bzr3376-0ubuntu2~14.04.1_all.deb is invalid,
altough the source ISO image seems to be correct according to SHA1
checksum.

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https://bugs.launchpad.net/bugs/778319

Title:
  Installation via USB-stick impossible

Status in debian-installer package in Ubuntu:
  Confirmed

Bug description:
  I'm trying to install Ubuntu 11.04 x64 Server onto a Shuttle XS35GT.
  The PC has no CD-ROM drive so I have to install via USB.

  1. Copy the files to a USB-stick via UNetbootin (WinXP, OSX) or Universal-USB-Installer.exe (WinXP)
  2. Boot to the USB-stick in order to install Ubuntu
  3. The installer halts at "[!!] Detect and mount CD-ROM" - "Your installation CD-ROM couldn't be mounted. Try again to mount the CD-ROM? (Yes/No)"
  4. Selecting either option does not help further the install

  What I tried:
  - Manually fix truncated filenames in /pool/l/linux/*.udeb (see http://ubuntuforums.org/showthread.php?t=1503083 )
  - Alt+F2, mount the .iso as a virtual CD-ROM under /media/iso (no use since the 11.04 installer does not allow manual chosing of the CD-ROM) (see http://ubuntuforums.org/showthread.php?t=1550317 )
  - Expert mode install (does not show anything special) (as suggested at http://ubuntuforums.org/showthread.php?t=1737345 )
  - Copying the "normal" desktop live CD-ROM to the USB-stick works perfectly, but I need the server install

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