Weird issue with TEAC FD05-HF & HD floppies

[phako]

I was basically checking if that drive was working with my greaseweazle F1, however I run in a curious issue with HD floppies. It seems to have a hard time reading cylinders 60 and up on side 1. I get a lot of "Unknown Mark" messages on those. I was wondering if this is might be an issue with the drive itself or the gw not being particularly happy with this drive. DD floppies read fine though. The drive's manual as well as the device's manual where this drive came from claim support for HD floppies.

T79.1: IBM MFM (0/18 sectors) from Raw Flux (836128 flux in 2201.93ms) (Retry #1.3)
T79.1: Giving up: 18 sectors missing
Cyl-> 0         1         2         3         4         5         6         7         
H. S: 01234567890123456789012345678901234567890123456789012345678901234567890123456789
0. 0: ................................................................................
0. 1: ................................................................................
0. 2: ................................................................................
0. 3: ................................................................................
0. 4: ................................................................................
0. 5: ................................................................................
0. 6: X...............................................................................
0. 7: ................................................................................
0. 8: ................................................................................
0. 9: ................................................................................
0.10: ................................................................................
0.11: ................................................................................
0.12: ................................................................................
0.13: ................................................................................
0.14: ................................................................................
0.15: ................................................................................
0.16: ................................................................................
0.17: ................................................................................
1. 0: ..............................................................XXXXXXXXXXXXXXXXXX
1. 1: ..............................................................XXXXXXXXXXXXXXXXXX
1. 2: ..............................................................XX.X.XXXXXXXXXXXXX
1. 3: ...............................................................XXXXXXXXXXXXXXXXX
1. 4: ...............................................................XXXXXXXXXXXXXXXXX
1. 5: ..............................................................XXXXXXXXXXXXXXXXXX
1. 6: ..............................................................XXXXXXXXXXXXXXXXXX
1. 7: ..............................................................XXXXXXXXXXXXXXXXXX
1. 8: ...........................................................X..XX.XXXXXXXXXXXXXXX
1. 9: ............................................................X.XXXXXXXXXXXXXXXXXX
1.10: ............................................................X.XXXXXXXXXXXXXXXXXX
1.11: .............................................................XXXXXXXXXXXXXXXXXXX
1.12: ..............................................................XXXXXXXXXXXXXXXXXX
1.13: ..............................................................XXXXXXXXXXXXXXXXXX
1.14: ..............................................................XXXXXXXXXXXXXXXXXX
1.15: ..............................................................X.XXXXXXXXXXXXXXXX
1.16: ..............................................................XXXXXXXXXXXXXXXXXX
1.17: ..............................................................XXXXXXXXXXXXXXXXXX

or from another floppy

T79.1: IBM MFM (0/18 sectors) from Raw Flux (834831 flux in 2201.94ms) (Retry #1.3)
T79.1: Giving up: 18 sectors missing
Cyl-> 0         1         2         3         4         5         6         7         
H. S: 01234567890123456789012345678901234567890123456789012345678901234567890123456789
0. 0: ................................................................................
0. 1: ................................................................................
0. 2: ................................................................................
0. 3: ................................................................................
0. 4: ................................................................................
0. 5: ................................................................................
0. 6: ................................................................................
0. 7: ................................................................................
0. 8: ................................................................................
0. 9: ................................................................................
0.10: ................................................................................
0.11: ................................................................................
0.12: ................................................................................
0.13: ................................................................................
0.14: ................................................................................
0.15: ................................................................................
0.16: ................................................................................
0.17: ................................................................................
1. 0: .........................................................................XXXXXXX
1. 1: .........................................................................XXXXXXX
1. 2: .........................................................................XXXXXXX
1. 3: ........................................................................XXXXXXXX
1. 4: ......................................................................XXXXXXXXXX
1. 5: .....................................................................XXXXXXXXXXX
1. 6: ...................................................................XXXXXXXXXXXXX
1. 7: ..................................................................XXXXXXXXXXXXXX
1. 8: ................................................................XX.XXXXXXXXXXXXX
1. 9: ..............................................................XXXXXXXXXXXXXXXXXX
1.10: .............................................................X.XXXXXXXXXXXXXXXXX
1.11: ..............................................................X.XXXXXXXXXXXXXXXX
1.12: ..............................................................XXXXXXXXXXXXXXXXXX
1.13: ................................................................XXXXXXXXXXXXXXXX
1.14: ...................................................................XXXXXXXXXXXXX
1.15: ....................................................................XXXXXXXXXXXX
1.16: .......................................................................XXXXXXXXX
1.17: .........................................................................XXXXXXX

[keirf]

Probably the HD sensor is sticking and the drive is reading in double density mode.

[phako]

mhm. They move freely and seem to toggle things, but it seems I just fried the drive so... we will never know -.-