Minimum Mac OS Version For Reading A DVD Properly?

[Paralel]

Is there a minimum version of the Mac OS that is required to read a DVD properly?

I am running 7.1.2p with all the extensions necessary for it to function as well as any installation of 7.6.1, and using 3rd party software I am able to get it to recognize the DVD drive without issue. It can read everything properly, CD, CDR, CDRW, etc... but, as soon as I try to give it a proper DVD (factory pressed to rule out mastering errors) it will only show the first 2 GB of data and that's it, despite having all the necessary extensions required for understanding the UDF format properly. I have even tested it with a DVD-R with less than 2 GB of data, and it can read the entire thing just fine. Files copied from the DVD-R to the HDD of the Mac hosting the drive are checksum perfect. As such, as far as I can tell, all the software needed to read a DVD properly is functioning without issue.

Was 2GB of data for a given volume a technical limit of the Mac OS before HFS+ was introduced?

 

[Phipli]

Is there a minimum version of the Mac OS that is required to read a DVD properly?

I am running 7.1.2p with all the extensions necessary for it to function as well as any installation of 7.6.1, and using 3rd party software I am able to get it to recognize the DVD drive without issue. It can read everything properly, CD, CDR, CDRW, etc... but, as soon as I try to give it a proper DVD (factory pressed to rule out mastering errors) it will only show the first 2 GB of data and that's it, despite having all the necessary extensions required for understanding the UDF format properly. I have even tested it with a DVD-R with less than 2 GB of data, and it can read the entire thing just fine. Files copied from the DVD-R to the HDD of the Mac hosting the drive are checksum perfect. As such, as far as I can tell, all the software needed to read a DVD properly is functioning without issue.

Was 2GB of data for a given volume a technical limit of the Mac OS before HFS+ was introduced?

It's a more complicated answer than you expect because it depends on hardware and OS, but 7.5.2 and up can deal with partitions bigger than 2GB if I remember, but truthfully, you probably want a PowerPC because I think it otherwise just moves the limit to 4GB (less than 4.3).

It's a right old mess that I don't really feel like looking up the exact specifics of.

 

[gsteemso]

There's a point at which the limit rises from 2 GiB to 4, and then another point at which it rises from 4 GiB to 2 TiB. (Internally, it's going from a signed to unsigned 32-bit byte count, then to a 32-bit count of 512-byte sectors.)

 

[Realitystorm]

7.5.2 for PowerPC 2TB support. AND any system released with 7.5.2, not sure if there are any 68k systems released with that version. https://www.savagetaylor.com/2018/01/01/mac-os-standard-format-specifications-apple-kb-article-8647/

 

[Realitystorm]

Did a quick search. Mac OS 8.1 was the first system to have official UDF support. So perhaps 68k systems capable of running 8.1 can access DVDs

 

[Phipli]

7.5.2 for PowerPC 2TB support. AND any system released with 7.5.2, not sure if there are any 68k systems released with that version. https://www.savagetaylor.com/2018/01/01/mac-os-standard-format-specifications-apple-kb-article-8647/

Yeah, 7.5.2 is specifically a PowerPC release, I think it was for the first of the PCI macs? Could be wrong.