I note in wd.c:


#define LBA48_THRESHOLD         (0xfffffff)     /* 128GB / DEV_BSIZE */
...
        /*
         * This seagate drive seems to have issue addressing sector 0xfffffff
         * (aka LBA48_THRESHOLD) in LBA mode. The workaround is to force
         * LBA48
         */
        { "ST3200822A",
          WD_QUIRK_FORCE_LBA48 },
...
        if (wd->sc_flags & WDF_LBA48 &&
            (wd->sc_wdc_bio.blkno > LBA48_THRESHOLD ||
            (wd->sc_quirks & WD_QUIRK_FORCE_LBA48) != 0))
                wd->sc_wdc_bio.flags |= ATA_LBA48;

I note that the ST3200822A claims only 0x0fffffff sectors when viewed
the LBA way, not 0x10000000, so it's not surprising that it doesn't
like to be addressed the LBA way for a sector that, according to the
LBA interface, is past the end of the drive.

Wouldn't it make more sense for the > to be >=?  ISTM the quirk could
go away then.

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