~$ dvd+rw-mediainfo /dev/sr1
INQUIRY:                [Optiarc ][DVD RW AD-7203S ][1.04]
GET [CURRENT] CONFIGURATION:
 Mounted Media:         1Bh, DVD+R
 Media ID:              YUDEN000/T03
 Current Write Speed:   6.0x1385=8310KB/s
 Write Speed #0:        20.0x1385=27700KB/s
 Write Speed #1:        18.0x1385=24930KB/s
 Write Speed #2:        16.0x1385=22160KB/s
 Write Speed #3:        12.0x1385=16620KB/s
 Write Speed #4:        8.0x1385=11080KB/s
 Write Speed #5:        6.0x1385=8310KB/s
GET [CURRENT] PERFORMANCE:
 Write Performance:     6.0x1385=8310KB/s@[0 -> 1639776]
 Speed Descriptor#0:    00/1639776 R@16.0x1385=22160KB/s W@20.0x1385=27700KB/s
 Speed Descriptor#1:    00/1639776 R@16.0x1385=22160KB/s W@18.0x1385=24930KB/s
 Speed Descriptor#2:    03/1639776 R@16.0x1385=22160KB/s W@16.0x1385=22160KB/s
 Speed Descriptor#3:    03/1639776 R@12.0x1385=16620KB/s W@12.0x1385=16620KB/s
 Speed Descriptor#4:    00/1639776 R@8.0x1385=11080KB/s W@8.0x1385=11080KB/s
 Speed Descriptor#5:    00/1639776 R@8.0x1385=11080KB/s W@6.0x1385=8310KB/s
 Speed Descriptor#6:    00/1639776 R@5.0x1385=6925KB/s W@4.0x1385=5540KB/s
READ DVD STRUCTURE[#0h]:
 Media Book Type:       00h, DVD-ROM book [revision 0]
 Legacy lead-out at:    1639776*2KB=3358261248
READ DISC INFORMATION:
 Disc status:           complete
 Number of Sessions:    1
 State of Last Session: complete
 Number of Tracks:      1
READ TRACK INFORMATION[#1]:
 Track State:           partial/complete
 Track Start Address:   0*2KB
 Free Blocks:           0*2KB
 Track Size:            1639776*2KB
FABRICATED TOC:
 Track#1  :             17@0
 Track#AA :             17@1639776
 Multi-session Info:    #1@0
READ CAPACITY:          1639776*2048=3358261248