Re: how to use cdrecord or wodim to tell avialable space on multi-session CD-R?

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

> Hello. Is there a way to tell how much availble space are there on
> CD-R by using cdrecord or wodim?

cdrecord option -minfo (not to be confused with option -msinfo)
tells this by its last output line.

$ cdrecord dev=0,0,0 -minfo
...
Track  Sess Type   Start Addr End Addr   Size
==============================================
    1     1 Data   0          722        723
    2     2 Data   12125      13616      1492
    3     3 Data   20519      21598      1080
    4     4 Blank  28501      359846     331346

Last session start address:         20519
Last session leadout start address: 21599
Next writable address:              28501
Remaining writable size:            331346


wodim only has the older option -toc which will tell you the
number of used blocks.
Like

track:   1 lba:         0 (        0) 00:02:00 adr: 1 control: 4 mode: 1
track:   2 lba:     12125 (    48500) 02:43:50 adr: 1 control: 4 mode: 1
track:   3 lba:     20519 (    82076) 04:35:44 adr: 1 control: 4 mode: 1
track:lout lba:     21601 (    86404) 04:50:01 adr: 1 control: 4 mode: -1

Here the space consumption is 21601 * 2048 bytes = 42.2 MB.
The next session will start after a gap of 14 to 20 MB.
(Fist gap is 23 MB, then some of 14 MB, and the rest will be 20 MB.)


Have a nice day :)

Thomas