Ubuntu 64bit Desktop 15.04 installation crashes while copying files

[Iris Ward]

During the "copying files" step, the Ubuntu 64-bit Desktop 15.04 installation crashes with an I/O error dialog: [Errno 5] Input/output error. Very helpful.

This is a clean installation on a new 500GB dynamically-allocated virtual hard-drive from an ISO file, rather than a physical disc. I chose not to download
updates while installing, nor to install the third-party software.

I'm running within the current version of VirtualBox (4.4.30, r101610), and I suspect it's a compatibility issue with one of my system settings, so is a brief summary of what I changed compared to the default:

* Shared Clipboard -> Host-to-Guest (very unlikely)
* Base Memory 2048MB, Enable I/O APIC
* 4 processors, 100% execution cap, PAE/NX enabled
* Video memory 128MB (likely irrelevant)

Since initially submitting this, I have also tested it with 1 processor and no I/O APIC; and separately with PAE/NX disabled - neither made a difference.

As for the host machine, yes, I have enough hard drive space (2TB free), enough memory, and a modern, 64-bit processor (i7-2600k with "8 cores"). I also ran the Windows 7 built-in error checking tool on the host hard drive, and it found no errors.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.25
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CasperVersion: 1.360
Date: Sun Aug 2 00:46:13 2015
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 LANGUAGE=en_GB.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

Your installation medium is corrupt. You will need to recreate it and should verify it using the check disc option from the boot menu.