External hard drive permissions

June 1, 2010 at 08:36:56
Specs: Windows XP, 1.6Ghz/768mb
I just bought an USB external hard drive with no firmware, it was refurbished with no partition. I formatted it with a 500 Gb NTSC partition. It works just fine on my personnal computer, but when I plug it on a school computer (I'm a regular, non-admin user in the school network) it seems to have twisted permission schemes. There are four main folders, two of them were visible but completely unaccessible and the other ones had all their files read-only. I could write new files at will but not modify existing files. I tried playing with the permissions, unsetting read-only on every file, sharing the disk, etc. while I used the disk at home and it gave similar results when I got back to school. How do I make sure my external hard drive is accessible from any computer? I really do not need any invasive security precautions for these files. Thank you.

By the way, both machines on which I tried it work on Windows XP Pro.

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June 1, 2010 at 08:40:15
Excuse me, a correction: The first time I tried it on the school, the problem was that everything was read-only. It's after I messed with the permissions at home that two of the folders became unaccessible from school.

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