Re: [school-discuss] Knoppix for Kids Beta

[Stephen Liu <satimis@icare.com.hk>]

Hi Harry,

On Thu, 2003-06-19 at 00:20, Harry McGregor wrote:
> Is your disk a 650MB or a 700MB usable disk? (74 min vs 80 min)?

650MB CD-RW.  

I also hesitate whether it has sufficient space for the ISO image in
question.  I only made a trial.  However this space is sufficient for
Redhat images and Osft image.

On KonCD there is a function to calculate CD space before burning.  Is
there such a function on X-Cd-roast?

> I have burnt quite a number on our lite-on drive,
> 
> cdrecord dev=0,0,0 speed=52 driveropts=burnfree,forcespeed -v -eject
> knoppix-kids-v2.iso
> 
> I am useing 40x rated 80 minute media, and it will burn just fine at 52x
> on this drive.

I only have CD-RWs of 650MB space.  I am looking for CD-RW with 700MB on
the market and could not find it.

(Remark: I have CD-R of 700MB but not try them yet)

B.Regards
Stephen


> Here is a burn example.
> 
> > hmcgregor@harry:~$ cdrecord dev=0,0,0 speed=52 driveropts=burnfree,forcespeed -v -eject knoppix-kids-v2.iso
> > Cdrecord 2.01a15 (i686-pc-linux-gnu) Copyright (C) 1995-2003 Jörg Schilling
> > TOC Type: 1 = CD-ROM
> > scsidev: '0,0,0'
> > scsibus: 0 target: 0 lun: 0
> > Linux sg driver version: 3.1.24
> > Using libscg version 'schily-0.7'
> > Driveropts: 'burnfree,forcespeed'
> > atapi: 1
> > Device type    : Removable CD-ROM
> > Version        : 0
> > Response Format: 2
> > Capabilities   :
> > Vendor_info    : 'LITE-ON '
> > Identifikation : 'LTR-52246S      '
> > Revision       : '6S0D'
> > Device seems to be: Generic mmc CD-RW.
> > Current: 0x0009
> > Profile: 0x000A
> > Profile: 0x0009 (current)
> > Profile: 0x0008
> > Profile: 0x0002
> > Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
> > Driver flags   : MMC-3 SWABAUDIO BURNFREE FORCESPEED
> > Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
> > Drive buf size : 1422080 = 1388 KB
> > FIFO size      : 4194304 = 4096 KB
> > Track 01: data   698 MB
> > Total size:      802 MB (79:31.34) = 357851 sectors
> > Lout start:      803 MB (79:33/26) = 357851 sectors
> > Current Secsize: 2048
> > ATIP info from disk:
> >   Indicated writing power: 5
> >   Is not unrestricted
> >   Is not erasable
> >   Disk sub type: Medium Type B, low Beta category (B-) (4)
> >   ATIP start of lead in:  -11835 (97:24/15)
> >   ATIP start of lead out: 359849 (79:59/74)
> > Disk type:    Short strategy type (Phthalocyanine or similar)
> > Manuf. index: 24
> > Manufacturer: SONY Corporation
> > Blocks total: 359849 Blocks current: 359849 Blocks remaining: 1998
> > cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> > cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
> > cdrecord: WARNING: This causes a high risk for buffer underruns.
> > Forcespeed is ON.
> > Starting to write CD/DVD at speed 52 in real TAO mode for single session.
> > Last chance to quit, starting real write    0 seconds. Operation starts.
> > Waiting for reader process to fill input buffer ... input buffer ready.
> > BURN-Free is OFF.
> > Turning BURN-Free on
> > Performing OPC...
> > Starting new track at sector: 0
> > Track 01:  698 of  698 MB written (fifo 100%) [buf  99%]  24.4x.
> > Track 01: Total bytes read/written: 732874752/732874752 (357849 sectors).
> > Writing  time:  173.146s
> > Average write speed  28.9x.
> > Min drive buffer fill was 85%
> > Fixating...
> > Fixating time:   17.518s
> > BURN-Free was never needed.
> > cdrecord: fifo had 11544 puts and 11544 gets.
> > cdrecord: fifo was 0 times empty and 5066 times full, min fill was 85%.
> > hmcgregor@harry:~$ md5sum knoppix-kids-v2.iso
> > b838e362a364a2db2805fc6fe39e089d  knoppix-kids-v2.iso
> > 
> 
> 				Harry
> 
> > B.Regards
> > Stephen