~$ time growisofs -Z /dev/dvd=ubuntu-20.04-desktop-amd64.iso Executing 'builtin_dd if=ubuntu-20.04-desktop-amd64.iso of=/dev/dvd obs=32k seek=0' /dev/dvd: "Current Write Speed" is 16.4x1352KBps. 1048576/2715254784 ( 0.0%) @0.0x, remaining 258:50 RBU 100.0% UBU 2.9% 8421376/2715254784 ( 0.3%) @1.6x, remaining 48:12 RBU 100.0% UBU 52.7% 39878656/2715254784 ( 1.5%) @6.8x, remaining 14:32 RBU 100.0% UBU 94.5% 71827456/2715254784 ( 2.6%) @6.9x, remaining 9:48 RBU 99.9% UBU 94.5% 104235008/2715254784 ( 3.8%) @7.0x, remaining 7:55 RBU 100.0% UBU 94.5% 137166848/2715254784 ( 5.1%) @7.1x, remaining 7:12 RBU 100.0% UBU 94.5% 170557440/2715254784 ( 6.3%) @7.2x, remaining 6:27 RBU 100.0% UBU 94.5% 204472320/2715254784 ( 7.5%) @7.3x, remaining 5:56 RBU 100.0% UBU 94.5% 238878720/2715254784 ( 8.8%) @7.4x, remaining 5:42 RBU 100.0% UBU 94.5% 273743872/2715254784 (10.1%) @7.5x, remaining 5:21 RBU 100.0% UBU 94.5% 309100544/2715254784 (11.4%) @7.7x, remaining 5:03 RBU 99.4% UBU 94.5% 344948736/2715254784 (12.7%) @7.8x, remaining 4:55 RBU 100.0% UBU 94.5% 381288448/2715254784 (14.0%) @7.9x, remaining 4:41 RBU 100.0% UBU 94.5% 418119680/2715254784 (15.4%) @8.0x, remaining 4:29 RBU 100.0% UBU 94.5% 455409664/2715254784 (16.8%) @8.1x, remaining 4:22 RBU 100.0% UBU 94.5% 483786752/2715254784 (17.8%) @6.1x, remaining 4:18 RBU 100.0% UBU 37.1% 521961472/2715254784 (19.2%) @8.3x, remaining 4:07 RBU 100.0% UBU 94.5% 560627712/2715254784 (20.6%) @8.4x, remaining 4:02 RBU 100.0% UBU 94.5% 599752704/2715254784 (22.1%) @8.5x, remaining 3:52 RBU 100.0% UBU 94.5% 639369216/2715254784 (23.5%) @8.6x, remaining 3:44 RBU 100.0% UBU 94.5% 679477248/2715254784 (25.0%) @8.7x, remaining 3:38 RBU 100.1% UBU 94.5% 720109568/2715254784 (26.5%) @8.8x, remaining 3:30 RBU 100.0% UBU 94.5% 761200640/2715254784 (28.0%) @8.9x, remaining 3:22 RBU 100.0% UBU 94.5% 802750464/2715254784 (29.6%) @9.0x, remaining 3:17 RBU 100.0% UBU 94.5% 841056256/2715254784 (31.0%) @8.3x, remaining 3:11 RBU 100.0% UBU 37.1% 877428736/2715254784 (32.3%) @7.9x, remaining 3:06 RBU 100.0% UBU 94.5% 920354816/2715254784 (33.9%) @9.3x, remaining 3:01 RBU 100.0% UBU 94.5% 963772416/2715254784 (35.5%) @9.4x, remaining 2:54 RBU 100.0% UBU 94.5% 1007681536/2715254784 (37.1%) @9.5x, remaining 2:47 RBU 100.0% UBU 94.5% 1052049408/2715254784 (38.7%) @9.6x, remaining 2:42 RBU 100.0% UBU 94.5% 1096941568/2715254784 (40.4%) @9.7x, remaining 2:36 RBU 100.0% UBU 94.5% 1142292480/2715254784 (42.1%) @9.8x, remaining 2:31 RBU 100.0% UBU 94.5% 1188167680/2715254784 (43.8%) @9.9x, remaining 2:25 RBU 99.9% UBU 92.7% 1234501632/2715254784 (45.5%) @10.0x, remaining 2:19 RBU 99.9% UBU 94.5% 1271660544/2715254784 (46.8%) @8.0x, remaining 2:16 RBU 100.0% UBU 37.1% 1318846464/2715254784 (48.6%) @10.2x, remaining 2:10 RBU 100.0% UBU 94.5% 1366556672/2715254784 (50.3%) @10.3x, remaining 2:04 RBU 100.0% UBU 94.5% 1414758400/2715254784 (52.1%) @10.4x, remaining 1:59 RBU 100.0% UBU 94.5% 1463418880/2715254784 (53.9%) @10.5x, remaining 1:53 RBU 100.0% UBU 92.7% 1512570880/2715254784 (55.7%) @10.6x, remaining 1:48 RBU 100.0% UBU 92.7% 1562214400/2715254784 (57.5%) @10.8x, remaining 1:43 RBU 100.0% UBU 94.5% 1612316672/2715254784 (59.4%) @10.9x, remaining 1:37 RBU 100.0% UBU 94.5% 1662943232/2715254784 (61.2%) @11.0x, remaining 1:32 RBU 100.0% UBU 92.7% 1714028544/2715254784 (63.1%) @11.1x, remaining 1:27 RBU 100.0% UBU 92.7% 1745977344/2715254784 (64.3%) @6.9x, remaining 1:24 RBU 100.0% UBU 37.1% 1797881856/2715254784 (66.2%) @11.2x, remaining 1:19 RBU 100.0% UBU 92.7% 1850277888/2715254784 (68.1%) @11.3x, remaining 1:14 RBU 100.0% UBU 92.7% 1903165440/2715254784 (70.1%) @11.4x, remaining 1:09 RBU 100.0% UBU 94.5% 1956511744/2715254784 (72.1%) @11.6x, remaining 1:04 RBU 100.0% UBU 94.5% 2010349568/2715254784 (74.0%) @11.7x, remaining 0:59 RBU 100.0% UBU 94.5% 2064711680/2715254784 (76.0%) @11.8x, remaining 0:54 RBU 100.0% UBU 94.5% 2119499776/2715254784 (78.1%) @11.9x, remaining 0:49 RBU 100.0% UBU 92.7% 2174812160/2715254784 (80.1%) @12.0x, remaining 0:44 RBU 100.0% UBU 90.9% 2230616064/2715254784 (82.2%) @12.1x, remaining 0:39 RBU 100.0% UBU 94.5% 2266791936/2715254784 (83.5%) @7.8x, remaining 0:36 RBU 100.0% UBU 37.1% 2323349504/2715254784 (85.6%) @12.3x, remaining 0:32 RBU 100.0% UBU 92.7% 2380464128/2715254784 (87.7%) @12.4x, remaining 0:27 RBU 100.0% UBU 94.5% 2438037504/2715254784 (89.8%) @12.5x, remaining 0:22 RBU 100.0% UBU 94.5% 2496102400/2715254784 (91.9%) @12.6x, remaining 0:17 RBU 100.0% UBU 90.9% 2554658816/2715254784 (94.1%) @12.7x, remaining 0:12 RBU 100.0% UBU 90.9% 2613673984/2715254784 (96.3%) @12.8x, remaining 0:08 RBU 100.0% UBU 94.5% 2673213440/2715254784 (98.5%) @12.9x, remaining 0:03 RBU 100.0% UBU 94.5% builtin_dd: 1325808*2KB out @ average 9.2x1352KBps /dev/dvd: flushing cache /dev/dvd: updating RMA /dev/dvd: closing session /dev/dvd: reloading tray real 4m6.459s user 0m0.513s sys 0m6.639s