I have two sets of identical files, one set on a CD and one set on a flash drive.

All files have their read-only attribute turned on.

When I copy the files from the flash drive to a PC, everything comes across as expected.

However when I copy the files from the CD to the same PC, the files come across, but the read-only attribute on all files gets turned off.

No error messages appear.

This happens on multiple PCs / multiple CDs / multiple locations.

Can someone tell me why the read-only attributes are being reset only when I am using a CD and not from a flash drive?

I am currently using Windows 8 Pro, but I have seen the same results on Windows 7 and XP.

This is by design and has always been so.

HOW TO: Remove the Read-Only Attribute While You Copy Files from a CD-ROM in Windows 2000 (Q323002)
http://support.microsoft.com/support/kb/articles/q323/0/02.asp

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ArcSet 1.1.0: Free Download
http://www.softpedia.com/progDownload/ArcSet-Download-18676.html