Without seeing all the files involved, I have no idea what's up, but I can tell you that you need a bigger harddrive if you expect to work on files this large.
There is no way I know of to change where temp files are written.
The entire project is 24+Gb. Files varies between 9 Mb to 100+ Mb. Anyway, turned out that exporting each section as PDF is fine. Slow but fine. The only issue is that I cannot merge all PDF files into a single file. I exported each section as PDF/X compliant. Merging them into one single PDF the result will no longer be PDF/X compliant.
Regarding the space, it looks weird considering that I moved all files on external HDD.
Thank you for your time and assistance.
I am informed that the new file will be no longer PDF/X compliant. This is the message I got from Adobe Acrobat.
In AcrobatDC you can save the binder file as PDF/X-1a via File>Save As Other>Press Ready PDF(PDF/X). Click Settings in the Save dialog to choose PDF/X-1a. I assume all of your file have the same Output Intent, so choose that profile from the printing conditions pop-up.
InDesign is going to go to the start-up disk when you run out of memory and unfortunately there isn't a scratch disk option. You might restart and make sure ID is the app running when you try the export. The images are linked and not embedded or pasted right?
Yes. I saw that option and I use it few minutes ago. I will wait for printer's feedback.
Yes, the images are all linked. Well it looks like Adobe might include this feature in InDesign's next update. If it is something that can be done.
Thank you Rob and Bob for your support.