[gentoo-user] Re: Plextor SATA DVD RW not working

2007-06-08 Thread James
Willie Wong wwong at Princeton.EDU writes:


  The source can't be read.
  Maybe you don't have enough rights for this, or source doesn't contain data
  (e.g: no disc in drive). (/dev/dvd)


Hello Willie,
Sorry for the delay, working for a living often gets
in the way managing my gentoo systems..


 what does 'ls -l /dev/dvd' show?

ls: cannot access /dev/dvd: No such file or directory


 can your user read /dev/dvd? 

NO


   -- permissions?
   -- is the device really /dev/dvd?

In /dev/ I see these only:
cdrom
cdrom1 there is an older cd also in the machine
cdrw1

grepping dmeg I see:
hdb: CD-ROM TW 120D, ATAPI CD/DVD-ROM drive
scsi 2:0:0:0: CD-ROMPLEXTOR  DVDR   PX-755A   1.04 PQ: 0 ANSI: 5

Obviously, I do not have the SATA drive set up correctly.
I'm not sure where udev ends and what I have to do with
custom rules or other configs to set up this drive
under 2.6.20-gentoo-r8. Looking in the kernel everything
that looks like what I need for SATA is there, but, I'm 
inexperienced with setting up SATA based drives and peripherals

I do vaguely remember something about SATA/SCSI devices
changes, bur, really, I've never had this dvd reading or writing
working on this drive, since it was set up on the amd64
last January.


ideas?


James

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Re: [gentoo-user] Re: Plextor SATA DVD RW not working

2007-06-08 Thread Willie Wong
On Fri, Jun 08, 2007 at 02:39:05PM +, Penguin Lover James squawked:
   The source can't be read.
   Maybe you don't have enough rights for this, or source doesn't contain 
   data
   (e.g: no disc in drive). (/dev/dvd)
 
  what does 'ls -l /dev/dvd' show?
 
 ls: cannot access /dev/dvd: No such file or directory
 
 
-- permissions?
-- is the device really /dev/dvd?
 
 In /dev/ I see these only:
 cdrom
 cdrom1 there is an older cd also in the machine
 cdrw1
 
 grepping dmeg I see:
 hdb: CD-ROM TW 120D, ATAPI CD/DVD-ROM drive
 scsi 2:0:0:0: CD-ROMPLEXTOR  DVDR   PX-755A   1.04 PQ: 0 ANSI: 5
 
 Obviously, I do not have the SATA drive set up correctly.
 I'm not sure where udev ends and what I have to do with
 custom rules or other configs to set up this drive
 under 2.6.20-gentoo-r8. Looking in the kernel everything
 that looks like what I need for SATA is there, but, I'm 
 inexperienced with setting up SATA based drives and peripherals
 
 I do vaguely remember something about SATA/SCSI devices
 changes, bur, really, I've never had this dvd reading or writing
 working on this drive, since it was set up on the amd64
 last January.
 

Well, I don't actually own a SATA device, so I can't help you on the
kernel side (someone else on this list surely can). But one of the
first thing is to read through your dmesg (or search through /sys) to
see whether it is a udev problem or a kernel problem. 

(Under udev, if I am not mistaken, the default scripts should have the
cdrom/cdrw/dvd device nodes be symlinks to the devices' real names,
so the question now is: where does those three cd devices you listed
point to? Presumeably some of them points to your other CD that is
appearing as hdb. Is any pointing to a SCSI disk?)

Best to luck,

W
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