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Generally there are three types of flag, "Copy Always", "Copy Once", and "Copy Never". As you can tell, most commercial DVD movies have "Copy Never" embedded in addition to Macrovision, and that's why standalone DVD recorders cannot copy commercial DVDs. Some cable programs are broadcast with embedded "Copy Once" flag and can be recorded on either HDD, DVD-RAM or DVD-RW in VR mode, but not on DVD-R. If recorded on HDD first, then it can be transfered to DVD-RAM or DVD-RW in VR mode, and the original copy on HDD would be erased. As you may have noticed, all DVD Forum-sanctioned recorders are CPRM compliant and there is no way to get around it (although some +R/RW recorders may). Also the CGMS copy flag affects only recording, not playback ability, although VR mode playback compatibility is quite limited.
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