IDE corruption w/ 48 Bit addressing

[Felix Domke]

> Users report harddisk corruption, and a quick test showed, that data
> written to 0x1800000000+x (LBA sector 0xC000000+x/512) is also written
> to x. (direct O_LARGEFILE-access to /dev/discs0/disc).
OK, update, this was a bit misleading:

when reading from the device, the upper 3 bytes aren't updated in the
right way, so the "previous content" (as specified in the ATA/6 specs)
seem to be invalid and contain, well, wrong content.

felix


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