>> esp0: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid=c00

For what it may be worth, these are very similar to what I get (on a
relatively old kernel rev - 1.4T) when I try to use a disk with 1K
sectors instead of half-K sectors:

probe(esp1:6:0): max sync rate 10.00Mb/s
scsipi_inqmatch: 2/0/0 <, , >
sd1 at scsibus1 targ 6 lun 0: <MAXTOR, XT-8380S, B5G> SCSI1 0/direct fixed
sd1: 349 MB, 1632 cyl, 8 head, 27 sec, 1024 bytes/sect x 357720 sectors
esp1: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 200
esp1: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 2000
esp1: !TC on DATA XFER [intr 10, stat 83, step 4] prevphase 1, resid 800

/~\ The ASCII				der Mouse
\ / Ribbon Campaign
 X  Against HTML	       mouse@rodents.montreal.qc.ca
/ \ Email!	     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B