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Enable Disk Copy's expert mode for hidden features
Ok, very nice; now, can anyone explain what are all those immage options...
Enable Disk Copy's expert mode for hidden features
well by far the most useful of them to some will be the Disk Copy 4.2 image format. This means you can create disk images for OS 9 users without rebooting into OS 9. Very nice.
Enable Disk Copy's expert mode for hidden features
Disk Copy 4.2 was for images way earlier than OS 9. Now I can make images for my old System 6 disks... if I only had a 800k floppy drive to connect to my flat panel iMac...
Disk image formats
Apple DiskCopy 4.2: very old uncompressed format, mostly useless now. Maybe very very old systems can't run DiskCopy 6 and would require that (provided you find the old DiskCopy 4 app, which didn't come with the system). At least System 7 and above can run the last DiskCopy 6 app.
NDIF: Apple DiskCopy 6. The best (can provide compression, mounts under X-9-8-7-...) In fact I still wonder why Apple needed the new dmg format which doesn't even provide better compression than NDIF (if dmg had the level of compression ShrinkWrap achieved using StuffIt Engine, then nobody would ever need "archive" formats like zip or sit, which require decompression before using their content). If the dmg compression level is variable, I would welcome any suggestion to easily tweak it (I think PathFinder gives such options). NDIF read/write: it's in the name, uncompressed NDIF read only: uncompressed but sized to the actual content NDIF compressed: read-only and compressed, the archive format, ideal for storage and distribution of mac programs and data NDIF compressed (KenCode): not sure, same as above with added CRC check? The other formats are new .dmg images, which don't mount under OS 9 (some of those may mount using the unreleased DiskCopy 6.4 and 6.5b11 apps). By the way, ShrinkWrap definitely left room for a killer shareware if someone was willing to write it: something that would manage dmg images better under OS X and 9, and other platforms while we're at it, would have the potential to replace the whole compressor/archive market, which is based on obsolete impractical concepts.
Disk image formats
Thanks so much; btw, where did you get that info?
Source ? No source.
Mostly from the top of my head, where it got by trial and error I guess.
Answer to disk image types...
I would recommend that everyone who is interested in this hint check out the man page of hdiutil (or if you don't like reading man pages, try http://osxfaq.com/man/1/hdiutil.ws , although you should probably get in the habit of checking out man pages and using man -k <keyword>)...
Answer to disk image types...
that last part is wrong, you do NOT *NEED* NDIF to preserve resource forks, UDIF will preserve them. |
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