Which includes vintage Macs from G3's, G4's and G5s. Then boot your Mac while holding down the 'option' key and then select the USB drive (hopefully it recognizes it) I have restored multiple PPC Mac's to Tiger using this method.

It will take quite a while but if it completes it successfully you should be ready to rock. When restoring the disc image use the image you 'mounted' and not the DMG file itself (just seems to work better and not fail the 'checksum' part of the restore). I'm not sure if it relates to your problem, but some of my G4 Macs have some trouble detecting DVDs, especially dual-layer ones, whereas CDs are detected all the time.Also, don't worry, both.DMGs and.ISOs can be burnt correctly onto discs via Windows, with the correct tools and options. But in case that fails, here is one suggestion:Try downloading the three 10.4 Tiger CDs (instead of the DVD version) and try burning those onto CDs, and use those instead. By - 2019, November 19 - 7:43pmAlright, well, from 'I only have dual-layer DVDs', my understanding is that you also tried burning 10.4.x Tiger on a dual-layer DVD, which I'm not sure would work.It's good you are trying out the 'single-layer Leopard DVD' download from here, provided you use a single-layer DVD with it. Then you can wipe off clean the partititon you temporarily used to do this install.

By - 2019, November 21 - Did you try ImgBurn and UltraISO yet? Well, even if not, now that you have Tiger up and running (congrats!), you also have the option of using Mac OS X tools to help.For example, if you have a FireWire partition, you can use Disk Utility to 'burn' the Leopard installer into that partition (or, really, it could even be in a partition within your internal hard disk), and then boot from that to then actually install Leopard, onto another partition.

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