Table of Contents
If you could, write as much closer to disk capable size as possible, for your need over 22M of multi-session overhead to be able to write next bit on CD. Ie, if you leave 20M open on CD, it will be totally wasted.
- The '# of sectors used' / 512 = the 'M space it takes' Also true for 'Blocks total' and 'Blocks remains'
- size reported by du is bigger on HD than on CD E.g.: HD 735468544, CD: 732443136
cdrecord -multi recording
- CD sector size = 2048
- (mkfs extents written) ~= (file size)
- (mkfs extents written) = (Track <new>: data)
- (Total bytes read/written) = (Total size) - 2 sectors (4k)
- (Blocks total) - (Total size) = (Blocks remaining)
cdrecord -msinfo
will return last_sess_start,next_sess_start, i.e., the start sector of the last session and the begining of this session.
(track:lout) - (this session begin sector) = (multi-session overhead)
- multi-session overhead (for 700M disk) is 11400 sectors (22.3M) (cdrecord -msinfo, 2nd val) - (track:lout)
cdrecord -toc
- 1st number/column is the start sector of data session
- 2nd number/column (in ()) is 4 times the 1st column
- (this session begin sector) + (Total size) = (next session begin sector)
- The last (next session begin sector) is listed in 'track:lout'
multi-session overhead is 11400 sectors (22.3M)
$ cdrecord -multi dev=0,0,0 -eject -v speed=8 $ISOF Track 01: data 10 MB Total size: 11 MB (01:08.42) = 5132 sectors Lout start: 11 MB (01:10/32) = 5132 sectors Current Secsize: 2048
ATIP start of lead in: -11940 (97:22/60) ATIP start of lead out: 335975 (74:41/50) speed low: 0 speed high: 4
Blocks total: 335975 Blocks current: 194721 Blocks remaining: 189589 Starting to write CD/DVD at speed 4 in write mode for multi session.
Starting new track at sector: 141254 Track 06: 10 of 10 MB written (fifo 100%). Track 06: Total bytes read/written: 10506240/10506240 (5130 sectors).
ATIP start of lead out = 335975 = Blocks total.
Blocks current = 194721 = 335975-141254 (Blocks total - last_sess_start)
Blocks remaining = 189589 = 335975-146386 (Blocks total - next_sess_start) excluding session overhead
357728 extents written (698 Mb) 'du -m $ISOF' = 702
Track 01: data 698 MB Total size: 802 MB (79:29.73) = 357730 sectors Lout start: 802 MB (79:31/55) = 357730 sectors
— 802 - 698 = 104
Blocks total: 359849 Blocks current: 359849 Blocks remaining: 2119
Track 01: 698 of 698 MB written (fifo 100%) [buf 99%] 12.2x. Track 01: Total bytes read/written: 732626944/732626944 (357728 sectors).
% cdrecord -msinfo cdrecord: Drive needs to reload the media to return to proper status. cdrecord: Input/output error. read track info: scsi sendcmd: no error [...] cdrecord: Cannot read first writable address
% cdrecord -toc track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 4 mode: 2 track:lout lba: 357730 ( 1430920) 79:31:55 adr: 1 control: 4 mode: -1
— 357730 * 4 = 1430920
286880 extents written (560 Mb)
— 286882/ 512 = 560.316, 286880 / 512 = 560.312
'du -m $ISOF' = 563
Track 01: data 560 MB Total size: 643 MB (63:45.09) = 286882 sectors Lout start: 643 MB (63:47/07) = 286882 sectors
— 643 - 560 = 83
Blocks total: 359849 Blocks current: 359849 Blocks remaining: 72967
— 359849 / 512 = 702.83,
— 72967 / 512 = 142.514, 142.514 + 560.312 = 702.826
Track 01: 560 of 560 MB written (fifo 100%) [buf 99%] 12.4x. Track 01: Total bytes read/written: 587530240/587530240 (286880 sectors).
— 587530240 / 1024 / 1024 = 560.312
— 587530240 Bytes / 286880 Sectors = 2048 B/S
$ cdrecord -msinfo 0,298282
— 298282 - 286882 = 11400
11400 / 512 = 22.2656
$ cdrecord -toc track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 4 mode: 2 track:lout lba: 286882 ( 1147528) 63:47:07 adr: 1 control: 4 mode: -1
— 286882 * 4 = 1147528
$ mkisofs -r -N -L -d -D -J -f -C `cdrecord -msinfo` -M $CDR_DEVICE -o $ISOF MvB$cdate.$cdisk.dar 83.63% done, estimate finish Wed Apr 28 15:41:51 2004 85.02% done, estimate finish Wed Apr 28 15:41:51 2004 [...] 98.95% done, estimate finish Wed Apr 28 15:41:54 2004 358752 extents written (700 Mb)
% cdrecord -multi -eject -v speed=$CDR_SPEED $ISOF [...] Track 01: data 118 MB Total size: 135 MB (13:26.29) = 60472 sectors Lout start: 135 MB (13:28/22) = 60472 sectors Current Secsize: 2048 [...] Blocks total: 359849 Blocks current: 61567 Blocks remaining: 1095 Forcespeed is OFF. [...] Starting to write CD/DVD at speed 12 in real TAO mode for multi session. BURN-Free is ON. Turning BURN-Free off Performing OPC... Starting new track at sector: 298282 Track 02: 118 of 118 MB written (fifo 100%) [buf 99%] 12.5x. Track 02: Total bytes read/written: 123842560/123842560 (60470 sectors).
![[Tip]](../../../../asciidoc/images/icons/tip.png){kind=icon} | |
!! |
560 + 118 = 678
700 - 678 = 22
----- MvB040426.6
$ mkisofs -r -N -L -d -D -J -f -o $ISOF MvB$cdate.$cdisk.dar* mkisofs: Warning: -follow-links does not always work correctly; be careful. Warning: creating filesystem that does not conform to ISO-9660. 12.64% done, estimate finish Wed Apr 28 17:58:15 2004 [...] 88.37% done, estimate finish Wed Apr 28 17:58:16 2004 Total translation table size: 0 Total rockridge attributes bytes: 256 Total directory bytes: 0 Path table size(bytes): 10 Max brk space used 6444 39616 extents written (77 Mb) 'du -m $ISOF' = 78 % cdrecord -multi -eject -v speed=$CDR_SPEED $ISOF Track 01: data 77 MB Total size: 88 MB (08:48.24) = 39618 sectors Lout start: 89 MB (08:50/18) = 39618 sectors Blocks total: 359849 Blocks current: 359849 Blocks remaining: 320231 Track 01: 77 of 77 MB written (fifo 100%) [buf 99%] 12.6x. Track 01: Total bytes read/written: 81133568/81133568 (39616 sectors). $ cdrecord -msinfo 0,51018 $ cdrecord -toc first: 1 last 1 track: 1 lba: 0 ( 0) 00:02:00 adr: 1 control: 4 mode: 2 track:lout lba: 39618 ( 158472) 08:50:18 adr: 1 control: 4 mode: -1
(320231 - 11400) / 512 = 603.186
dar -s 700M -S600M -b -R . -X "*~" -D -c $cdir/MvB$cdate 358272 extents written (699 Mb) Blocks total: 359849 Blocks current: 308831 Blocks remaining: 1575 Starting new track at sector: 51018 Track 02: 600 of 600 MB written (fifo 100%) [buf 99%] 12.6x. Track 02: Total bytes read/written: 629256192/629256192 (307254 sectors).
