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Everything posted by PEB

  1. Hi No I haven't tried that but may well give it a go. I found that certain relevant files are different on the laptop which can read the dvds. I tried to replace those files on the pc but despite getting over the Trusted Installer issue it failed due to some id (can't remember exactly which) so gave up. As long as I have the laptop I will be ok if I need to read older format prerecorded dvds.
  2. Well after several hours trying to get 'cdfs' to start plus trying to find something(!) in Windows to repair and make the drives behave, I have more or less given up at least for now. In typical Windows behaviour, when I try to create a Service using 'cdfs.sys' it tells me that it already exists. If I try to start it it tells me that the Service doesn't exist. I have found a way to get UFD format ISO files onto the main PC using the laptop so at least XPlane is ok now. Will probably resume trying the beat Windows into submission in a little while. But thanks for your help and suggestions. PS Imgburn log does show that it Initialises SPTI and finds all the drives.
  3. That's not paranoid - it is impressive. I thought I was pretty thorough but your method is first class. I may well 'borrow' some it. Will let you know how I get on with the DVDs
  4. I agree about the Images. I do them v regularly but sods law was that because I didn't see this problem until this week, I didn't have an Image that was before the issue arose ie one where the DVD problem didn't occur. As it turns out I was doing them too often! But in future I will keep one Image safe and do others as and when. Thanks
  5. Hi I think I have discovered that the 'cdfs.sys' driver is not being run. This apparently allows support for reading ISO9660 & Joliet. The System Event Log shows an error with it not starting. The files are present and the Registry settings are exactly the same as on the laptop which can read the dvds! I thought that getting it to startup would be straightforward but not managed it yet. Still got a few things to try before it all goes out of the window. I will also have a look at the Imgburn log file because may well be a part of the problem and could explain why Imgburn works every time. What I really don't understand how this problem has arisen at all because the system has been stable for quite a while other than Windows updates! Thanks again for your help.
  6. Hi Sorry for the delay. The prerecorded are indeed 'pressed' DVDs. I have tried all sorts to be able to read them including restoring system images, etc. Windows says the drivers are up to date. And the problem is on both a SCSI drive and a standalone USB connected drive but both use the same Windows 'cdrom.sys' driver. Yet Imgburn can read all discs including the 'problem' DVDs on both drives. I have found that some pressed DVDs can be read by Windows but they are either in UDF format or apparently both have UDF AND Joliet formats. Any that don't have UDF ie are ISO9660 and Joliet format cannot be read. They did all work in the past (maybe a couple of months ago) and still work on a Laptop with a similar TSSTcorp drive BUT it has an earlier WIndows Build date. Unfortunately I don't have any Disk Images from more than a month ago. It is the fact that Imgburn can always read the disks that is frustrating - it must be using either different drivers or settings but even when Imgburn is present and reading the disks, Windows still cannot. Apart it from being just wrong (which bugs me) I need to either have one of the pressed DVDs or an ISO of it in a drive in order to run X-Plane software so as far as I can see I HAVE to find a fix!! I really appreciate your help so far but I don't want to take up your time any further. I will get over this even if it means re-installing Windows which is extreme but may be the only alternative. Sorry for the ramblings - I suppose I am testing my own logic!!
  7. Thanks very much for doing all that. I 'think' that I'm glad that it worked but now am more stumped than ever. Will continue to try today. Awake now. I have also created various CDs and DVDs and can read them ok. The DVDs I have a problem with are pre-recorded and I know that not too long ago there was no problem with them. So onwards ...
  8. Thanks very much for doing all that. I 'think' that I'm glad that it worked but now am more stumped than ever. Will continue to try today.
  9. Thanks for the responses. I was hoping to find out in detail how Imgburn is able to read the DVD and its contents whilst Windows 10 doesn't in the hope that I can find a way to make Windows 10 also read the DVD. Even using Imgburn to create an ISO file of the DVD its contents still cannot be seen or file mounted from Windows Explorer. I am guessing that Imgburn must use different drivers. I have checked and found that the main PC where the DVD contents cannot be read is 64 bit Windows 10 version 2004 from 26/6/20 ie more or less upto date. The laptop we have is on 64 bit Windows 10 version 1909 from 5/8/19 (so a year out of date!) but it can read the DVD contents, mount the ISO version of it, etc as it should. And after more investigation I believe that I might have identified that the root cause is that those DVDs that cannot be read on the main PC are in ISO9660 format and not in the more modern UDF which can be read. So it looks like MS stopped supporting the ISO9660 format in the last year which fits with having read that MS is tending to no longer support optical drives because they are old hat apparently! Anyway short of being able to get the latest versions of Windows 10 to 'see' the ISO9660 DVDs with different drivers and/or settings, I am hoping to be able to find some software that will be able to create an ISO file in UDF format from the ISO9660 DVD ie a sort of file conversion. I hope that the ISO can be mounted, etc.
  10. My Windows 10-based 64-bit system has a built-in TSSTcorp SH-S203P DVD read/write SCSI unit plus a USB connected standalone Freecom 20J6 DVD read/write unit (plus various disks, etc). It is several months since I last used either unit but both had been working fine; I used them to create Windows repair disks, iso copies, file backups, etc using Imgburn However I now find that I can no longer read 'product' DVDs that have third party software on them (eg Aerosoft, Microsoft, etc) even though in the past I could. But both devices can still read any CD or any 'non Product' DVD that I have created for storing files, etc. In order to be sure that the 'product' DVDs were not at fault, I do have a 64-bit Windows 10 laptop and it reads the disks with no problems.The only obvious difference would appear to be that the version of driver 'cdrom.sys' on the laptop is 10.0.18362.1 whilst it is 10.0.19041.1 but both with the same date of 21/6/2006. I believe that it is a system rather than hardware problem. I have not made any changes to Windows settings (that I am aware of) that would obviously affect the functioning of both drives. What finally 'did it' for me was that just for the hell of it I thought I would use Imgburn to try to read a 'product' DVD - it worked perfectly and Imgburn 'sees' the DVD just as it should. But unfortunately Windows itself still cannot!! I would have assumed that Imgburn would use the 'standard' Windows drivers and so I expected that it also would be unable to read the 'product' DVDs. But clearly not. I would really appreciate any ideas as to where I might look in Windows to try to resolve this because just now I am completely stumped and I really do need to be able to read the 'product' DVDs. Thank you.
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