Hello together I have an old engine tester at home that I have already been standing there for a few years without a function. I had already opened a post about it where I was looking for floppy disks. After a long time I thought now I’m going to the problem again because I still find it too bad to dispose of such an oldtimer jewelry stücjk. The original problem was that the tester could no longer load an operating system with the error message “BOOT DRIVE 0 FAILED ERROR 87” The after various forum contributions I could identify as a defective floppy drive so I kept looking for a drive and then found a cheap used one in the bay. Then he didn’t show this error anymore but another FAILED ERTROR number which I don’t know anymore so thought ioch ok the floppy disks are scrapped, which I don’t know exactly. So I got a sd floppy emulator and a set Systemd diskettes, AU diskettes and target data diskettes as image get this you find in the internet if you are looking for fat vette, many thanks for this. So again connected to the tester emulator and system diskette loaded and see as it runs, but then the disillusionment. After the system was loaded he demanded after the AU-II LEG diskette this also as image. So inserted on further pressed it also shows me that the diskette is recognized and then the errormeldun appears g “INTERRUPT 01” without that I can press anything. I hope here are a few specialists who are still familiar with these testers or had the same problem. Maybe someone knows if it is a hardware problem or maybe not compatible floppy disks? Now to my questions I have some original floppy disks that I would like to read on the PC and bring the SD card as image file afuf, but have read now that the normal USB floppy laof works the 720K B diskettes can’t read because maybe someone knows an alternative? thank you so much for the answers and your help greeting Boris