Hi Martin, On Thu, Jun 28, 2018 at 9:29 AM Martin Steigerwald <martin@xxxxxxxxxxxx> wrote: > Michael Schmitz - 28.06.18, 06:58: > […] > > >> In the interest of least surprises, we have to fix the 32 bit > > >> overflow (so we can even detect that it would have happened), and > > >> give the user the chance to carefully consider whether to accept > > >> the new behaviour. That means refusing to make available any > > >> partition that would have been affected by such overflow. > > > > > > That is acceptable for me as I told before. Either mount or refuse > > > to > > > mount, but do not overflow and mount nonetheless :) > > > > > > Mind you, I am not using my Amiga machines either at the moment. And > > > I repurposed the 2 TB disk years ago. > > > > That's fine - I understand the 'profile' image was a true binary copy > > of the RDB, and placing that file at offset 0 in an image file is a > > legitimate use? > > You actually ask me to remember about what that 'profile' image was? :) > > Well, in the attachment note on the bug report I wrote: "should be just > a binary copy", so I did not know exactly back then either. However the > file starts with "RDSK" and then it has "PART" headers and so on. That > looks pretty much like a binary copy of an RDB. I am a bit surprised by > its small size of 2 KiB. But I see three partitions in there. According > to the screenshot I also provided, the disk had three partitions. So > probably Media Toolbox has been intelligent enough to just copy the used > space of the reserved RDB area. Cause I think the reserved space must > have been higher than 2 KiB. However the RDB/disk geometry editing > screen does not display it and off hand I do not know where to look > inside the RDB to see how much space has been reserved. Interestingly > the "Total sectors" value in that Media Toolbox window also overflowed. The RDB can be anywhere in the first 2 tracks of the disk, and is identified by the "RDSK" block (with a correct checksum). The remainder (e.g. "PART" blocks) is in a linked list. So 2 KiB sounds fine for 3 partitions (1 RDSK + 3 * PART = 4 blocks = 4 * 512 bytes). Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds