they currently consists of multiple archives, just to fit into the fat 32 file system. it is just that most people use ntfs these days. my suggestion is to change the offline installers to one large package. DLC of course needs to be separate.

I'm fairly sure they do this to accommodate being able to use FAT32 USB sticks. Personally I don't mind "single-piece" installers larger than this (as Mac & Linux versions already are) up to 20-30GB or so, but games like Cyberpunk 2077 with +100-150GB installer sizes as well as tomorrows never-ending bloat would probably not be well received by those with flaky / slow Internet connections where they may be limited to downloading a game over multiple sessions in chunks of a several GB at a time, especially if they're using a work / college Internet connection to do it.

The following wishlist items are not exactly what you are talking about, but they come close:
https://www.gog.com/wishlist/site/offline_installer_larger_packages_for_large_games_16_gb_or_20_gb_instead_of_4_gb
https://www.gog.com/wishlist/site/download_offline_installers_single_click_per_game

Anyway, you could also create a new entry.

Well, I recently made a thread where you could air your issues with the way that GOG manages their installers, the size is but one problem of them.

I had a 250Gb external that was formatted Fat32. Gave me a problem when i wanted to do a 30Gb backup from a laptop. Well, that was until i made a zfs partition using multiple files then letting me make larger than the 4Gb file.

Can't remember why i couldn't split it... I'll agree, and disagree.

Last year or something i did some experiments to see if the number of files and size of the files mattered; like if you just concatenated al the files into a single bin or resized them to fit a DVD better. Nope, the installer expects exactly N files of N size and complains if it isn't there. Which basically closed off my tests and checks.

I'd be happier if you could resize them as you want without going through an additional step (Say 7zipping and splitting on DVD sized images, then having to extract them before you can run the extractor); but it seems they won't allow it. So that's where i disagree.

I will agree that 4Gb is a decent sized chunk, especially when you end up with one corrupted, then you have only one to replace and not the whole thing.

Still having to download 10, 20 or 30 DVD sized 4Gb instead of a 40, 80, or 120 single GB file....

I think people have lost perspective of how much space and data a single megabyte could hold, since it isn't on a floppy and they aren't writing papers in text or RTF anymore...

That's (probably) because you perform a integrity check.

If you turn that off, it will start installing and ask for the next file once necessary (see attachment). For me it makes no difference if it's the one or the other. I use gogrepoc, others can use Galaxy to download all in one batch. Before Galaxy it was done using gogdownloader.

Considered that; Nope. It immediately complains the expected file bin_8 (or whatever) couldn't be found (immediately upon starting the installer), or was the wrong size and to go fetch it again; These values are baked into the installer.

At least, these are the conclusions i came to.

My screenshot says otherwise. It asks for file #2.

But I did try something else after this and I could recreate your scenario. You just misinterpreted it.

I removed the last file. In this scenario the installation would not start at all, as you described. The installer does not check for all the files in between however. I could remove whatever I wanted but the last file.

Solution: When you split your files to different media, put the .exe file and the last file to the same medium. Since all files are actually smaller than 4GB, this will work with DVDs.
All the other files you can put wherever you want.

Was #2 the last file? Sounds about right, store lists it 7.9Gb Having the last and installer on the same disc certainly would keep you from having to immediately swap discs, pretty sure that doesn't change the file sizes can't really change.

Anyways, i'll grab a game with 3 parts (Blacktail looks good) and get back with you after i run a handful of tests.

1) Concat to 1 file (last file, so #1, then #3)
2) concat 1&2, leave 3 alone
3) Concat 1 & 3 (add 2 gigs to each 1 and 3)

[s]Once i have these and try to install, i'll give my notes on success/failure.[/s]

Okay updates....

Concat to file #1, it requires file 3
Rename #1 to #3 (all 3 files) it says the file is corrupt
Concat file 1&2 together as -1,bin, says corrupt, but only once it tries to start.

Integrity check, says file is corrupt.

So my previous conclusion, no you can't change or move the data around to other bin files to make it fit media better.

No, the game has 12 bin files and one .exe.

Moving #2 would still start the installation with the game asking for #2 when the time came, moving #12 would prevent the installation. => .exe and #12 need to be in the same directory.

I never thought it would be possible in the first place. These are not just hj- or 7z-split archives. Each bin has it's own structure.
The different file size of bin #1 implies that. If you check your installers, you will notice that bin #1 is always smaller than the other ones, for each and every game that has at least three .bin files.

My post was simply about the option to spread the files on different media, not about file sizes.

I suspected that bin #1 was smaller, so the .exe would fit on the same disc. The problem with that is, that the last file needs to be on the same disc as the .exe. Also the difference is so minimal, it would make no difference at all.
Maybe it could work placing a dummy file on disc #1 with the same name. If I get bored and don't forget about it until then I'll test it.

Just use Galaxy as a downloader. Its versions of the offline installers are one big file.

I preffer it that the installers are in parts as they are easier to download then trying to download a big game and then it fails due to the connection being too slow and i just continue other parts some other day or something.
Looking at you Dragon age origins i am not gonna download it at 4 megabytes per second that i get here since the great flood or also the gog problem with installers even though my speeds was supposed to be 24 megabytes per second like it was before the floods or gog offline installer problems.

Nope. The option "downloaad backup installers" in the extras section downloads the same files you get through the homepage or with various tools like gogrepoc.

See screenshot, I just downloaded these using Galaxy.

Then we got off the same page as i thought we were talking of being able to change bins and file sizes... Per these posts... Glancing at it again, I see you were answering that not all files needed to be present at once. While i was talking the viability of changing the number of files and sizes by moving data around. Oh well.

Regardless i was actually hoping it was just a split 7z/tar file and it would read the same regardless.