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When I try to boot from an iso (Ubuntu), I get

Iso for emulation should be in one continuous location

How can I defragment the iso?

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Which version of Ubuntu or GRUB are you using? GRUB2 should be able to boot ISOs without defragmenting. –  LiveWireBT Feb 1 '13 at 10:14
Thanks for the info. That was a grub4dos used in an app preloaded with boot from iso option. –  totti Feb 1 '13 at 14:59

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