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Title says it all: I'm looking for advice on compressing GameCube ISO/Roms. Currently I have me ISOs compressed in 7zip, which is nice but useless at the same time (not readable/playable in Dolphin terms) Ideally I'm looking to compress the ISO into a format (I.e. CISO, GCM?, GCZ?, TGC? ) which is playable thru Dolphin. I would also like to know from anyone who has experience with this topic on the outcome of compressing ISO, ie playable, reliability, best compression method and file extension, really anything else relevant to the topic. Thanks in advance, I look forward to learning something new today from anyone who can pass on some knowledge to me and hopefully help someone else down the road.! EDIT: SOLVED!!!
SOLUTION BELOW I think I figured it out: the easiest / best method for anybody who comes across this,.thanks to shonumi & jhonn: Start here- ISO - Trim ISO in GameCube ISO Tool - Compress trimmed ISO to GCZ in Dolphin - GCZ file Trimmed ISO: 552MB - Trimmed ISO compressed to GCZ: 264 MB!!!! THAT IS 81% savings in space/mb Hell yeah!!! So far my test show no flaws in game performance.
I always used GCZ for my library and never got any problems. But, if you want to save space, I recommend compressing your GameCube ISOs with Wiimms' WIT Tools instead of Dolphin, as Dolphin won't scrub the original GameCube image (but it'll do for Wii images). That also means the uncompressed ISO won't match anymore after unscrubbing, but the important areas (e.g. The actual files) will still be intact.
TL;DR, what I do is: GameCube ISOs: dump them = make sure the MD5 matches a verified good dump = compress them to GCZ with WIT instead of Dolphin. Wii ISOs: dump them = use 'Verify Partition Integrity' option from Dolphin (or the equivalent command with WIT) = compress them to GCZ either with Dolphin or WIT as they'll achieve the same size in the end. Never had any problems and still saved a lot of GBs. @Jhonn First I would like to thank you for answering my question in the first place. I believe I found and installed the right version of the software WIT Windows variation: Cygwin (reference ), it appears there is not GUI variation of the program which seems very intimidating @first galance. Or am I just looking at this incorrectly.?
If it is command line, do you have any recommendation on syntax for a bulk scrub of GameCube ISOs within the same directory? I'd figure I'd ask the question, you maybe able to answer this question faster than I can and would more than likely get asked again in the future if not by me someone else who discovers this thread.
(, 04:23 PM)G00Glethis1 Wrote: it appears there is not GUI variation of the program which seems very intimidating @first galance. Or am I just looking at this incorrectly.? The tools Jhonn mentioned are indeed command-line only, however, there is at least one GUI for it. It's a bit old, but maybe this could help - It probably won't work with the latest versions of WIT. Wii Backup Fusion is only slightly more up-to-date. Alternatively, you could use the Gamecube ISO Tool.
That has a trimming (i.e. Scrubbing) option to reduce the file size of the disc image.
It has a GUI and has been around for quite a while now. @shonumi Great job! I did manage to stumble my way across qtwitgui, even though the program was nagging about not recognizing the newest wit.exe version installed in c: path directory.
It would appear the project has either bust or no active development. I'll give GameCube ISO Tool a shot and report back on results!
I'm also will keep checking in on the pulse of this thread if you, jhonn, or anyone else brings anything 'fresh' at least to me on 'discovering' ancient history here. Hahaha ooooo GameCube.
Gamecube ISO Tool 1.0.1 Build 5 Gamecube ISO tool is basically what the name suggests. You can use it to convert between various Gamecube formats for backup purposes or playing on most USB loaders via Dios Mios Lite. The main purpose of GCIT is as a testbed for gamecube functionality in Wii Backup Manager, but I've tried my best to also make it a usable standalone application.
See below for the change log, list of features and command line options. Features Read and write Full size (scrubbed) or trimmed ISO/GCM, GCReEx and DiscEx formats with direct conversion. Extract games from GCOS multiboot ISOs to any of the supported formats.
Command line options for batch processing etc. Save the original file layout to trimmed ISOs, allowing full size ISOs to be rebuilt at a later date with the same file layout as the original. Change log Build 5 Fixed: I forgot to remove special characters like ':' from the default filename in the dialog when saving ISO. Fixed: When uploading the log to the Ctrl-V website, the document title should've been 'GCIT log' instead of 'Ctrl-V log' Build 4 Initial release Command line gcit Source Options Source is either an ISO filename or folder in GCReEx/DiscEx format.
All options are case insensitive.Quit or -Q Quit after the operation if there's no errors.AlwaysQuit or -AQ Quit after the operation even if there's errors. Exit codes are as follows 0 - No error 1 - Error during operation 2 - User cancelled 3 - Command line error -Flush Flush the file buffers so that the SD card can be ejected almost immediately after the operation.Backup or -B Save a backup of the original fst.bin and boot.bin files inside the trimmed ISO.Align or -A 4 32 32K Set the alignment used in the ISO. 4 bytes, 32 bytes or 32KB.
Default is auto.Format or -F GCReEx DiscEx FullISO Set the destination format. Default is Trimmed ISO.Dest or -D filename folder Set the output location. GCReEx and DiscEx formats expect a folder. The ISO formats expect a filename. When extracting games from a GCOS multiboot disc, a folder is expected regardless of the output format.
Default is a file or folder called 'out' in the same folder as the source. Some simple examples of usage gcit game.iso gcit game.iso -b -d c: backup trimmed.iso gcit game.iso -b -a 32K -d c: backup trimmed.iso gcit game.iso -f gcreex -d e: games gcit game.iso -f DiscEx -d e: games gcit game.iso -q -flush -f FullISO -d 'c: folder with spaces full.iso' gcit multigame.iso -q -f discex -d 'e: games' Quelle.