Archived from groups: alt.sys.pc-clone.dell,alt.comp.periphs.cdr (
More info?)
In article <b1qan0hpqrg8e98qmejj3elcgcr71q5fir@4ax.com>, Jerome M. Katz <jerrymkatz@NOSPAM@yahoo.com> wrote:
>Phred,
> My comments are below in black.
> Jerry
Thanks mate. See another comment from me below.
>On Tue, 19 Oct 2004 11:07:20 GMT, ppnerkDELETETHIS@yahoo.com (Phred)
>wrote:
>>In article <lop7n0lrds84c295edlbto7hecbl6jt2th@4ax.com>,
>>Jerome M. Katz <jerrymkatz@NOSPAM@yahoo.com> wrote:
>>>There are several different ways of writing to a CD-RW. The first way
>>>is to use it as a normal CD-R with the ability to ertase the whole
>>>disk. This requires no formatting and can be read by any computer. The
>>>second method is packet writing which does require formatting and can
>>>be read by any machine having packet writing software (such as direct
>>>CD which comes with Easy CD Creator) or a UDSF reader which can be
>>>downloaded (free) from Roxio's site. With packet writing, the CD-RW
>>>behaves like a large floppy (i.e. you can delet individual files).
>>>
>>>I hope this clarifies the issues for you.
>>
>>G'day Jerry,
>>I admit to being still confused by what I've read in various places
>>and what I've experienced!
>>
>>Using Adaptec DirectCD 3.01d_D5 (i.e. a Dell-installed OEM version)
>>that came with my Dell 4100 under Windows ME:
>>
>>CD-RW -- The default format process takes around 20 minutes and
>>results in a disk that can be read reliably on a CD-ROM drive under
>>Windows 95 and Windows 2000 on old an Dell GXa 266, without any
>>additional software AFAIK.
> Some versions of
>Direct CD put the UDF reader on the CD-RW as part of the formatting so
>the disk can be read under any version of Windows compatible with that
>version of the UDF reader.
>
>>
>>CD-R -- The default format process takes barely a minute and creates
>>blanks that have much more useable space than the above-mentioned
>>CD-RWs. They can be used like a CD-RW for drag and drop under
>>Windows, and for the usual file operations from a DOS window (as you
>>can do with a floppy). But they CANNOT be read by the CD-ROM drive
>>referred to above -- though I guess it may be possible to do that by
>>installing additional software on the GXa, as you mentioned.
>
> The process you are using is totally different. You are
>not using the CD-R as a large floppy and you cannot erase and rewqrite
Well, it's not physically a floppy, and I know you can't *physically*
erase files from a CD-R formatted like that, but it's *logically* very
similar to using a floppy. For example, in a DOS window you can
create and "delete" files on the CD-R; create and "delete" folders;
and "overwrite" existing files with a new version -- all until you
eventually run out of space because you're basically just shifting
"pointers" around, not physically changing what's been written on the
disk. (I've no doubt there's likely to be software around that can
"recover" the previous versions of things like files by doing some
sort of appropriate scan of the surface of the CD.)
>on the disk. There is essentially no formatting for this type of
>writing. It should be redabale by all CD-ROM and CD-RW drives (except
>possibly very old drives)
I've only been able to read them on machines with CD-RW drives and
with DirectCD as the default install. Not at all on CD-ROM drives
(with the proviso it may be possible with specific software built for
the purpose).
>>Using the associated Adaptec ECDC 4.02d (Dell OEM?) to write
>>"standard" CD-Rs results in CDs that I've been able to read on any
>>machine, as you'd expect!
>>
>>I've not tried using a CD-RW as a "standard" CD-R (i.e. with ECDC),
>>though I gather it is possible to do this. (But perhaps it wouldn't
>>be readable on CD-ROM drives anyway, due to physical characteristics?)
>
> It should be readable on any relatively recent (less than about 5
>years old CD-ROM drive) and you can erase the whole disk but not
>delete individual files
Cheers, Phred.
--
ppnerkDELETE@THISyahoo.com.INVALID
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