Maximum concurrent ram usage doubles wrt the biggest file after each pass But multiple passes has disadvantages that far outweigh it:Īfter each pass, sectors are more 'mixed' than they were before The only benefit (compared to changing the initial pass and keeping passes at 1) is decreased overhead (the size of the combined gsm files will be smaller). The binary result from one pass is the input for the next. How multiple passes works (and why you shouldn't use it) Initial pass may be kept in for experimentation. Multiple passes will probably be removed.
COMBINING RESIDENT EVIL 4 ISO FULL
The standard settings should allow most people to merge most common file sizes (given 512MiB of ram it should easily handle full dual layer DVD sized images). They eat ram when given a large enough file and / or small enough piece size. Note this is partly why multiple passes are not recommended, nor is an initial pass of anything other than 1. (to give the program 1000MB of ram to work with for example). If you didn't actually run out of ram (just the ram java had access to), try executing with the -Xmx flag like so: Looks like you ran out of ram because the piece size was too small for the size of the largest file being grouped. Tales of Symphonia (Germany) (Disc 1) md5 FC4CAEAA8BAFBA662ABB400DE9C97579 Tales of Symphonia (Europe) (Disc 2) md5 EE81AC0AFDCA6D3930CAD14370CBEA75 Tales of Symphonia (Germany) (Disc 2) md5 97CE6F8EAB0272E7BBDC71DC96C6651A Resident Evil 4 (USA) (Disc 1).iso:1459978240:CA749757E3B9D119F3FEB1F9F0F81BD7ġ0 ngc pakkiso'd = 9.96 GB = 6.24 GB saved over raw isoġ0 ngc raw CDGroup'd = 6.24 GB = 3.72 GB saved over pakkisoġ0 ngc compress'd CDGroup'd = 5.25 GB = 0.99 GB saved over raw CDGroup Note: v0.4.x marks a new format, different to that of v0.3.x.Ĩ ngc pakkiso'd = 6.38 GB = 4.42 GB saved over raw isoĨ ngc raw CDGroup'd = 4.28 GB = 2.1 GB saved over pakkisoĨ ngc compress'd CDGroup'd = 3.07 GB = 1.21 GB saved over raw CDGroup Settings chosen to try and balance size reduction with practical time / hardware constraints Supports merging combined image size of up to 4TiBĮxternal compressor / decompressor support (7z) Images represented within the merged files can be renamed without unmerging (names stored in a text file *.hsa) Identical input images should result in identical merged files Removes non-data portions of sectors such as ecc if it can be regenerated losslessly)Ī mixture of 23 byte/sector images can be merged together Smart handling of 2352 byte/sector CD images (recognises audio, M0, M1, M2, M2F1, M2F2 sector types. Reduces storage footprint by de-duplication of sectors (unique sectors are only stored once)ĬDs, DVDs and Blu-Rays can be merged (any. Stage 4 takes advantage of uncompressed data in the imagesĮach stage acts on the output of the previous stage Stage 3 takes advantage of non-aligned redunduncies across related images
![combining resident evil 4 iso combining resident evil 4 iso](https://i.ytimg.com/vi/L39odqwqcTs/maxresdefault.jpg)
Stage 2 takes advantage of aligned redunduncies across related images
![combining resident evil 4 iso combining resident evil 4 iso](https://cdn.arstechnica.net/wp-content/uploads/2021/10/re4vr-listing.png)
Stage 1 takes advantage of redundancies in the CD format Stage 3: Diff grouped files to remove repeated non-aligned data
![combining resident evil 4 iso combining resident evil 4 iso](https://www.gamespot.com/a/uploads/original/gamespot/images/2009/features/gameguides/resident-evil-5/2154116-595.jpg)
Stage 2: Group each data sector size to remove repeated aligned data (de-duplicate sectors) Model non-data parts where possible (ecc, edc, etc) Stage 1: Split CD images (2352 byte/sector images) into their component parts. This program takes a directory of images, processing them to remove redundancies to save space. CDGroup merges related disc images to reduce combined file size.