Today I was trying to backup Lichdom: Battlemage gog version to DVDs. There are 3 .bin files and one .exe installer. The total size is around 12 GB. The first two .bin files and .exe that take around 7.8 GB. So to do what the title suggests, naturally I'm supposed to burn the .exe and first two .bin to a dual layer DVD and the other .bin to a 2nd DVD.

To ensure this process will work when I burn them that way, I cut the last .bin file to somewhere else in my hdd and started installation. The installer said (before the installation started) that I'm missing some files, so it will skip integrity check, however will ask for the location of necessary files during the installation. That's completely alright as that's what I want it to do. However during installation it showed some 'code 3 checksum error' and the installer stopped installing altogether instead of asking me for the location of missing file.

Just to try, I then made a .iso with the .exe and first two .bin files and started installation. Naturally same error showed up during installation.

I then tried keeping only the .exe and first .bin in the same folder and the last 2 .bin to another folder. Same error occurred.

I'm sure the file integrity is intact and there are no corrupted files. Because when I tried installing the game (along with integrity check) with all files on same folder it worked flawlessly.

So please help me with any suggestions that might help me install the game directly from DVD. I have Witcher 2 burned to 4 DVDs and I can install directly from them. So I know its possible (with some games at least). Also as I said the the installer says it will ask for the missing files during installation. But somehow it doesn't and instead quits altogether showing error.

Please note that my whole aim is to burn the game to multiple DVDs in a way so that I can install from them directly. I know I can copy- paste all files from DVDs to hdd in the same folder and install from there or can make .zip files to break big files into smaller ones and etc. But that isn't my purpose at all.

Thank you.

P.S. I see I should've checked the "question/problem" category when writing it. But I didn't know about it then. Now I can't check it on from edit section!

erm I might be wrong but what your doing is redundant ,,,,, and I don't think will work

1 you can always redownload your game off your library

2 since you don't need a cd probably they don't give you all the installation files ...but it sounds like you ran a foul of the original copy protection because back in the day they set it up where if the program thought it was being copied it wouldn't copy certain files unless something on the disk was read as verification (like if the first 4 might and magic games you couldn't copy the save files...... .)

What he wants to do has nothing to do with copy protection though. He simply wants to put different parts of the installer on multiple discs and install it that way.

Technically he has already done it with Witcher 2 and wants to do the same with this but for some reason it isn't asking for the next setup file as it should.

@OP:

Can you check the MD5 hash of the files on disc with the ones in your HDD? Unfortunately I don't have the specific game and cannot offer much help. I have many GOG games split the same way as you but they don't have this issue.

None of this is correct. Wait for an answer from one of our knowledgable forumgoers.

Well, I also did this (but in folders form) for the Witcher 2 as well and it was okay. Come Rise of the Triad (2013) and I also get the code checksum error despite having the same environment as the Witcher 2's installer files. They're a bit weird in that department yes, and I'm seriously looking for a solution that'll make something like professional game installer discs complete with autorun taking me to different parts of the setup and all.

So you're not alone.

Unfortunately, this used to be the case, but it will no longer work. Newer GOG installers require the *.exe/bin files to all be present in the same directory for the game to install. Supposedly, this occurred because of a change in the nature of the .bin files, which can now be opened with winrar/winzip (possibly for easier future archival).

You not only opened an old thread, but you practically went to the depths of the crypt to call it from 3000+ days ago.

You'd presumably want to use something along the lines of InnoExtract for future reference, but why anyone would be juggling DVDs in this day and age is beyond me.

I don't even have an optical media drive.

And I don't think the installers were made with splitting the files across multiple disks in the first place; where would it even check for circumstances such as that?

You really should have started a new thread, as what you are asking is not really related to DVD backups anyway.

As was suggested, the free InnoExtract is likely your best bet, though the free UnRar program might help you too.

Why are you wanting to open a GOG game BIN file?

P.S. 7-Zip does have some special switches that can sometimes overcome a failure to open (hash, asterisk, etc). But you are better served using a more suitable program.