Upgrading Xubuntu 7.04 to 7.10 (CD-ROM execution error)

Just in case if you see the following error when you run the Xubuntu upgrade:
$ sudo /media/cdrom/cdromupgrade &
sudo: unable to execute /media/cdrom/cdromupgrade: Permission denied
You’ll need to unmount and re-mount the CD as executable (-oexec):
$ umount /media/cdrom0
$ sudo mount -oexec /dev/cdrom /media/cdrom0/
Now… let’s hope the rest of my upgrade goes smoothly – with my (lack of) Linux knowledge, it’s gonna be a long night if it doesn’t…
(Oh, and by the way, you’re supposed to run the upgrade when you’re logged in normally – I was under the impression that you have to boot from the alternate CD for some reason…  But I guess if you’ve found this page, you’ve already got that part right…)

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