You mean the left hole when viewed from the front...the right is the write protection, the left is HD detection.
Also, it is not recommended to use 1.44s as 800s.

Click to expand...

Yes, not the write protection. Just a temporary solution to start a Mac.

Just out of curiosity, how did you download the disk image and get it into your 170? It's possible that OS X altered the resource fork during the download, or after you tried to mount it under OS X, so that Disk Copy could not recognize it on the 170. Whereas a freshly created file within OS X retained the necessary ID. In particular, I have found that Images mounted under OS X often do not work properly in a 68K environment. This was a known problem under OS 8, when using Disk Copy 6. While DC could make a perfectly usable 400 or 800K disk, if the disk were mounted under the OS 8 Finder, it would be corrupt for use under 68K Finders.

Click to expand...

I use a Windows 7 PC and all the disk images i downloaded were from different sources including System 1 - System 3.2. I also use mini Vmac to test those images. The system image I tested is System 2.0, Finder 4.1 which i got from http://www.earlymacintosh.org/disk_images.html. I'm not really sure why DC4.2 cannot recognize this image and the other on both PB170 and mini Vmac. What I did is drag the disk image on DC4.2 under mini Vmac and saved it again as a disk image. I use HFVEXPLORER and a USB Floppy Drive to put the disk image file into a 1.44mb diskette for use on my PB170. Running DC4.2 on both PB170 and miniVmac now recognizes the disk image I saved.

note: I use Stuffit 9 on Windows 7 to extract the images.