trouble burning DVD+R on a Pioneer drive

[Felix Breuer <felix@fbreuer.de>]

Hello!

I am having trouble buring a DVD+R on a Pioneer drive. Doing

   ./growisofs  -use-the-force-luke=dao -Z /dev/sr0=/mnt/data/f.iso

I get

...
3866591232/3870259200 (99.9%) @1.6x, remaining 0:01
builtin_dd: 1889776*2KB out @ average 1.5x1385KBps
/dev/sr0: flushing cache
/dev/sr0: closing track
/dev/sr0: closing disc
:-[ CLOSE SESSION failed with SK=2h/ASC=04h/ACQ=07h]: Resource temporarily unavailable
/dev/sr0: reloading tray

Before I fried several media by using variations of the command line,
including automatic generation of the iso image. Afterwards 

   ./dvd+rw-mediainfo /dev/sr0

shows:

INQUIRY:                [PIONEER ][DVD-RW  DVR-K14L][1.00]
GET [CURRENT] CONFIGURATION:
 Mounted Media:         1Bh, DVD+R
 Current Write Speed:   4.0x1385=5540KB/s
 Write Speed #0:        4.0x1385=5540KB/s
 Write Speed #1:        2.4x1385=3324KB/s
 Speed Descriptor#0:    00/2295103 R@1.0x1385=1385KB/s W@4.0x1385=5540KB/s
 Speed Descriptor#1:    00/2295103 R@1.0x1385=1385KB/s W@2.4x1385=3324KB/s
READ DVD STRUCTURE[#0h]:
 Media Book Type:       A1h, DVD+R book [revision 1]
 Media ID:              RITEK/R02
 Legacy lead-out at:    2295104*2KB=4700372992
READ DISC INFORMATION:
 Disc status:           appendable
 Number of Sessions:    1
 State of Last Session: incomplete
 "Next" Track:          1
 Number of Tracks:      2
READ TRACK INFORMATION[#1]:
 Track State:           partial/complete
 Track Start Address:   0*2KB
 Free Blocks:           0*2KB
 Track Size:            1889776*2KB
READ TRACK INFORMATION[#2]:
 Track State:           blank
 Track Start Address:   1889792*2KB
 Next Writable Address: 1889792*2KB
 Free Blocks:           405312*2KB
 Track Size:            405312*2KB
READ CAPACITY:          1*2048=2048
		       
		       
I would greatly appreciate any help.

Thanks,
Felix