![]() ![]() Presumably the corrupted sectors were the Mac partition(?). It just made an ISO of the partition that it could see. The Windows 7 make ISO utility didn’t like the hybrid disk and complained about corrupted sectors. This disk has two partitions, one HFS for classic MacOS and one FAT for Windows/Linux. This was a “Palm Programming” CD-ROM, from the O’Reilly book of the same name. The disk sizes differed with the OS X disk being 0.3 MB more in size, at 640 MB vs 639.7 MB Hybrid disk In the end, on Wndows 7, I just copied it on Windows 7 machine, right click on the disk in Explorer and select Make an ISO. Sudo dd if=/dev/disk2s0 of=rhlc.iso bs=2048 In the end, on OS X, when using dd I had to select the slice ID as well as the disk ID, /dev/disk1s0… and use sudo (from MacWorld hints: Create an exact duplicate of a CD from the command line.) sudo umount /dev/disk2s0 Or using dd if=/dev/disk2 of=BLC-RH62#3.iso bs=2048 conv=sync,notrunc ![]() The command would complete but when double clicking the image DiskImageMounter would give the following error: Using dd specifying /dev/disk1 also failed… dd if=/dev/disk2 of=BLC-RH62#2.iso Zsh: segmentation fault hdiutil makehybrid -joliet -iso -o BLC-RH62.iso /Volumes/BLC-RH62 Using hdiutil to create an ISO just gave me the following Segmentation fault error, and never produced an image file (from Create ISO Images from the Command Line) % hdiutil makehybrid -joliet -iso -o BLC-RH62.iso /Volumes/BLC-RH62 Hdiutil: makehybrid failed - internal error Hdiutil: makehybrid: attach of disk image failed: 112 iso (what ISO?) did not help (from How to create an ISO file on Mac for free (folder to ISO), maybe?) % hdiutil makehybrid -joliet -iso -o BLC-RH62.iso BLC-RH62.cdr On OS X, in Disk Utility the disk would automatically mount, then right click Image From…, selecting either read-only or DVD/CD master as the format, and the disk would unmount, start to copy and then automatically cancel (with no image file created whatsoever): Creating disk image from “BLC-RH62” (disk2s0) Even using dd is not that straight forward… Linux bootable disk
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