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Please note also - THIS BLOG ENDS HERE WITH THE LAST ENTRY FROM NOVEMBER 9th 2021.

I have prepared a new blog with wordpress at https://vintagecomputing.info !!!

Thank you.

Original 5.25" floppy drives in IBM PC or IBM PC/XTs are less wide than later selled floppy drives from other vendors (like TEAC or EPSON), that means 145mm from IBM, 147mm from others. And so 3.5" drive adapters are also too wide.
I was trying to add a second 3.5" floppy drive, but I couldn't. After 10 minutes, I gave up - I have the finding to rasp something from the side frame (about 1mm from each side).
This is really annoying. Only after expiriencing this for myself, I was able to find something about it in vintage-computer.com forum ... and all that after more than 30 years of IBM PC launch :-(