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Ubuntu Server 14.04.2 does not work by "Expert mode Installation"

Asked by Youhei Tooyama

Ubuntu Server 14.04.2 does not work by "Expert mode Installation" mode.
but This problem does not occur in 14.04.1 and 14.04.0 .

something errors on boot...
mount: mounting /dev/sda on /media failed: Invalid argument
umount: can't umount /media: Invalid argument

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Launchpad Janitor (janitor) said : 		#1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

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DK (dk-ubuntu-6) said : 		#2

Saw the same message - 14.04.2 server installer got stuck with the above.
However, I left it sitting there long enough, and eventually, after a bunch more attempts to mount things that don't exist, it booted and installed without further trouble.
Installing on Thinkpad T43 if it helps.

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DK (dk-ubuntu-6) said : 		#3

p.s. Disabling extra devices in BIOS boot device priority list seems to fix this sticking point in my case.
BIOS > Config > Floppy Drives > Legacy Floppy Drives > Disable

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Youhei Tooyama (ytooyama) said : 		#4

Ubuntu Server 14.04.3 does not work by "Expert mode Installation"

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Adauto Serpa (adautoserpa) said : 		#5

Ubuntu Server 14.04.3 does not work by "Expert mode Installation" with me too

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Tony Whelan (tony-whelan) said : 		#6

Selected expert mode in 14.04.3 but nothing happened - it runs in normal mode instead. Very frustrating.

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Jeffrey Guan (double12gzh) said : 		#7

this also dose not work on 14.04.4.