I have tried several times to install Natty on its own partition on my laptop (WinXP, Intel x86) using UNetBootin, but it always fail.
There is a dialog box:
Failed to unmount partitions
The installer needs to commit changes to partition tables,
but cannot do so because partitions on the following could
not be unmounted.
/cdrom
Please close any applications using these mount points.
Would you like the installer to try to unmount these partitions again?
If I click on "continue" Ubiquity will hang up, that is, the slideshow will play forever. I do not have a built-in optical drive and I'm not currently using any peripheral.
I have tried sudo umount /cdrom it says that cdrom is busy. Then the command fuser /cdrom returns "Stale NFS file handle".
How can I work around this to install Ubuntu?
It is a bug in Ubiquity:
I eventually found those threads after a long, really non-trivial search... Interesting workarounds are listed there. However I won't vouch for them (see comment). Be careful if you need install Ubuntu from an ISO image directly from your disk!
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