On Sun, Dec 1, 2019, 10:22 AM Tomasz CEDRO <[email protected]> wrote: > As my previous message got moderated, just a quick summary - looks > like a GEOM_PART silently discards writes to MBR with a DD when it > considers MBR broken (writing to the rest of the disk is possible). I > have reported this as error: >
I'm sorry, but you are wrong. It does no such thing. The error posted is on close when geom retastes the drive and finds bogus data. Geom *never* changes a write, ever, nor does it filter them. Gpart is not even looped in when writing to the raw disk with dd, though it may indirectly deny the open of the device. Debug flags 16 permits the open, but has no other effect. Some thumb drive have antivirus protection that will reject a write that is bogus. Warner https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242341 > > -- > CeDeROM, SQ7MHZ, http://www.tomek.cedro.info > _______________________________________________ > [email protected] mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-usb > To unsubscribe, send any mail to "[email protected]" > _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-usb To unsubscribe, send any mail to "[email protected]"
