Resolved Was there ever a two disc version of Leopard?

[MagicBoy]

I was expecting @LightBulbFun to pop up with that little nugget.

As usual @bunnspecial you are correct. That was an oversight they fixed with the 2,1 later in the year. I don't believe in early '06 Matshita had a thin enough DL drive available to fit the new chassis.

 

[ITguy2016]

The Apple factory Leopard disk is a dual layer disk. It's 8gb-there's no way around it being DL considering that it's on a single side of a single disk.

By your own admission, the 2004 G5 had no trouble with the pressed DL disk.

A DVD+R DL disk a different animal. +R is a different standard than -R, and older drives can be picky. They usually handle -R better than +R.

BTW, did you attempt to read the burned disk in the G5(not boot)? Disks that are "touchy"-rather SL or DL-can will often read but not boot.

I did not as it is no longer booting
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As previously stated - there are no DVD reader drives that are not dual layer. It's a basic component of the DVD Video and DVD-ROM specification. I've got a 2001 PowerBook Titanium 667MHz with a Combo (DVD-ROM/CD-RW) drive. It boots and install an original Leopard retail DVD. Now as to your DVD+R DL copy? Probably not as the standard postdates the drive.

When it comes to the recordable format there are single layer only 4.7GB writers (in both competing minus and plus standards) which were common until around 2005. Going with the PowerBook example from before, you'd need a late 2005 DLSD model to get the dual-layer Superdrive.

This appears to be the case. Looks as if I picked up some new knowledge today.

 

[weckart]

My first G4 PowerBook was a 1.5GHz 15". It came with a DVD-R SuperDrive. It could not do a thing with DVD+R media. Just could not recognise burned +R media let alone write to them. Problem with DVD media is that DVD-R is better for single layer compatibility whereas DVD+R is more stable for Dual-Layer discs. Pressed media is another matter altogether.

 

[bunnspecial]

My first G4 PowerBook was a 1.5GHz 15". It came with a DVD-R SuperDrive. It could not do a thing with DVD+R media. Just could not recognise burned +R media let alone write to them. Problem with DVD media is that DVD-R is better for single layer compatibility whereas DVD+R is more stable for Dual-Layer discs. Pressed media is another matter altogether.

When I buy single layer media now, I always buy -R. I don't mess with RW since it's less stable over time and it's cheap enough that I've never seen the need to re-write it(it was a different story when disks were a few bucks each).

Even though most of my desktops that I use regularly are far removed from their original optical drive and have(relatively) new "superdrives" that will handle anything I throw at them, I'd much rather do -R for better compatibility esp. with older Macs. I also use -R when I'm giving disks to other people since I have no idea what they may be reading them on and -R has a much better chance of working.

 

[Xandros]

The only reason I got +R DL discs is because at the time I had a Toshiba VHS/DVD recorder which for the DVD recording would only take +R media. No idea why, but that and the fact Dual Layer media was so bloody expensive meant I was more inclined to just buy a pack of five Memorex +R DL discs so I could use them with the computer and the Toshiba player to save myself buying two lots for both. The irony being that burning the leopard disc image failed several times so I coaster'd about two or three of the damn things, though that was probably because they were Memorex which I've learned in the years since can vary rather drastically on quality control since they aren't picky about where they source their discs from. If it wasn't for that Toshiba player (which was actually rather **** in hind sight) I'd have got -R media instead.