-
Senior Member
registered user
mpn:
You did not say whether you tried the "knoppix nodma" cheatcode. It may have the solution for many optical drive issues, since some controllers need it enabled and others need it disabled to work correctly. If you are using Version 5.0.1, then it is enabled by default. Some prior versions were disabled and much earlier, enabled. It can cause slow reads and error messages.
Also the type of media can be an issue. Some drives will read DVD-R, OR DVD+R, and sometimes both. Trying a different media type might be the key also. I would look at the data/spec sheets for your optical drive to see what capabilities it has.
-
Administrator
Site Admin-
![Quote](images/misc/quote_icon.png)
Originally Posted by
ckamin
Some prior versions were disabled and much earlier, enabled.
Actually, the history is disabled by default, then enabled by default, then "opps, that is causing way too many problems, let's disable it again", and now finally "hey, I forget why we disabled it, lets re-enable it".
![Quote](images/misc/quote_icon.png)
Originally Posted by
ckamin
Also the type of media can be an issue. Some drives will read DVD-R, OR DVD+R, and sometimes both. Trying a different media type might be the key also. I would look at the data/spec sheets for your optical drive to see what capabilities it has.
Good point, I had forgotten about trying the other polarity of media. But now that you mention it I would also try DVD/RW media if you have any, for two reasons. First, nothing is lost if it doesn't work. And second the difference in gain needed to read it sometimes corrects problems. I found this out years ago with CDRs and CR/RWs, I would have expected CDRWs to be even more picky, since the bit transistions are much less and it takes extra electronics to read them. But I had a drive that started flaking out on CDRs and eventually all it could read and write correctly was CR/RWs (it could still read pressed CD's), but it worked on CD/RW's fine until I retired it.
-
Senior Member
registered user
![Quote](images/misc/quote_icon.png)
Originally Posted by
Harry Kuhman
Actually, the history is disabled by default, then enabled by default, then "opps, that is causing way too many problems, let's disable it again", and now finally "hey, I forget why we disabled it, lets re-enable it".
Harry, You are certainly right about it starting out as dma disabled by default. My memory needs periodic testing and it failed on that one. It's hard to remember past last month, let alone a few years ago. I have seen dma cause some very strange issues in numerous operating systems. I like the option in the Knoppix menu where you can enable or disable dma on certain drives. You can start up without dma and then enable dma on the hard drives selectively and leave the optical drive off or vice versa, depending on which devices are troublesome.
Good point about the RW media.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
![Juniper Networks EX3300 EX3300-48P 48-Port Gigabit PoE+ Switch picture](/store/img/g/VnEAAOSwa0Zl9v6z/s-l225/Juniper-Networks-EX3300-EX3300-48P-48-Port-Gigabit.jpg)
Juniper Networks EX3300 EX3300-48P 48-Port Gigabit PoE+ Switch
$29.94
![Juniper Networks EX2300-C-12T Compact 12-Port EX2300-C Series Ethernet Switch picture](/store/img/g/Dh4AAOSw3Chmbx7U/s-l225/Juniper-Networks-EX2300-C-12T-Compact-12-Port-EX23.jpg)
Juniper Networks EX2300-C-12T Compact 12-Port EX2300-C Series Ethernet Switch
$300.00
![Juniper Networks EX2200-C-12P-2G Gigabit Ethernet Managed Switch picture](/store/img/g/dbUAAOSwFd1mey3A/s-l225/Juniper-Networks-EX2200-C-12P-2G-Gigabit-Ethernet-.jpg)
Juniper Networks EX2200-C-12P-2G Gigabit Ethernet Managed Switch
$79.99
![Juniper EX3300-24P 24-Port Ethernet Network Switch picture](/store/img/g/CNEAAOSw7ZtmftyQ/s-l225/Juniper-EX3300-24P-24-Port-Ethernet-Network-Switch.jpg)
Juniper EX3300-24P 24-Port Ethernet Network Switch
$63.89
![Juniper Networks EX3300-24P | 24 Port Gigabit Network Switch w/ Power cord picture](/store/img/g/MswAAOSwuMBl7vhO/s-l225/Juniper-Networks-EX3300-24P-24-Port-Gigabit-Networ.jpg)
Juniper Networks EX3300-24P | 24 Port Gigabit Network Switch w/ Power cord
$53.99
![Juniper Networks EX2200-C Ethernet Managed Switch w/ Rack Mounts picture](/store/img/g/63gAAOSwQnNmexRL/s-l225/Juniper-Networks-EX2200-C-Ethernet-Managed-Switch-.jpg)
Juniper Networks EX2200-C Ethernet Managed Switch w/ Rack Mounts
$74.99
![Juniper EX3400-48P 48 Port Switch PoE+ 4x SFP+ 2x QSFP 1xAC *Tested/Warranty* picture](/store/img/g/YkgAAOSwqztlzUSp/s-l225/Juniper-EX3400-48P-48-Port-Switch-PoE-4x-SFP-2x-QS.jpg)
Juniper EX3400-48P 48 Port Switch PoE+ 4x SFP+ 2x QSFP 1xAC *Tested/Warranty*
$139.95
![Juniper EX3400-48P 48-Ports PoE+ 4x SFP+ and 2x QSFP+ Managed Switch Tested picture](/store/img/g/INMAAOSw6ydmBcA-/s-l225/Juniper-EX3400-48P-48-Ports-PoE-4x-SFP-and-2x-QSFP.jpg)
Juniper EX3400-48P 48-Ports PoE+ 4x SFP+ and 2x QSFP+ Managed Switch Tested
$135.00
![Juniper EX4300-48p 48-port Gigabit Ethernet Poe+ Network Switch picture](/store/img/g/8mYAAOSw9lpmfd2O/s-l225/Juniper-EX4300-48p-48-port-Gigabit-Ethernet-Poe-Ne.jpg)
Juniper EX4300-48p 48-port Gigabit Ethernet Poe+ Network Switch
$140.00
![Juniper Networks EX2300-48P 48 Port Gigabit PoE 4 SFP 1/10G Network Switch picture](/store/img/g/VHMAAOSwonVme2lj/s-l225/Juniper-Networks-EX2300-48P-48-Port-Gigabit-PoE-4-.jpg)
Juniper Networks EX2300-48P 48 Port Gigabit PoE 4 SFP 1/10G Network Switch
$185.00