The block descriptor contains the number of blocks, not the highest LBA. Real hard disks return 0 if the number of blocks exceed the maximum 0xFFFFFF.
SCSI-Spec: http://ldkelley.com/SCSI2/SCSI2/SCSI2-08.html#8.3.3 The number of blocks field specifies the number of logical blocks on the medium to which the density code and block length fields apply. A value of zero indicates that all of the remaining logical blocks of the logical unit shall have the medium characteristics specified. Signed-off-by: Bernhard Kohl <bernhard.k...@nsn.com> --- hw/scsi-disk.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index 26f7345..519513c 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -642,9 +642,8 @@ static int scsi_disk_emulate_mode_sense(SCSIRequest *req, uint8_t *outbuf) else /* MODE_SENSE_10 */ outbuf[7] = 8; /* Block descriptor length */ nb_sectors /= s->cluster_size; - nb_sectors--; if (nb_sectors > 0xffffff) - nb_sectors = 0xffffff; + nb_sectors = 0; p[0] = 0; /* media density code */ p[1] = (nb_sectors >> 16) & 0xff; p[2] = (nb_sectors >> 8) & 0xff; -- 1.7.2
