Currently Being ModeratedNov 5, 2012 12:25 AM (in response to montagular)
the USB-Memory must be as any external hard disk - Mac OS Extended formatted - to be able to hold VIDEO AS .img files etc. in one piece.
If not it will break at approx 4Gb and will not be mended automatically or by any ease at all.
Yours Bengt W
Currently Being ModeratedNov 5, 2012 5:18 AM (in response to Bengt Wärleby)
Thank you Bengt - but actually the .img file was only ~700 MB (it's a short film).
Should it have worked, in this case?
Also, I have an external HD that was given to me by another Mac user a few years ago. How can I find out whether it is formatted as Mac OS extended? I have been using it with no problems so far, but never with .img files or anything as big as 4 Gb.
And lastly I read elsewhere that DVD-R would be more reliable than DVD+R. This was a few years ago though. Is it still true? And I think that if the DVD was able to be read on another computer, then it could not have had burn errors right? There must have been something else wrong. If you can let me know how to find out whether my HD is Mac OS extended format, I can try again, transferring it with that, in case even below 4 Gb there are problems.
Currently Being ModeratedNov 5, 2012 5:57 AM (in response to montagular)
the .img file was only ~700 MB (it's a short film). Should it have worked, in this case?
Don't know - May be ?
How can I find out whether it (the ext Hard Disk) is formatted as Mac OS extended?
• Select it on DeskTop/Finder (one Click)
• then go to File and down to Show Info - or - [cmd+I]
• read formatted as : nnnnnnnnnnnnnnnnnnn
And lastly I read elsewhere that DVD-R would be more reliable than DVD+R.
DVD+R are a more modern format and by so more reliable - BUT OLD DVD-Players can not read them so I chose them due to not knowing what player it will be played on.
And I think that if the DVD was able to be read on another computer, then it could not have had burn errors right?
No - but different devices has better or worse Error Correcting Functions - so keeping the amount of Burn Errors dowm = More devices can play them.
Yours Bengt W
Currently Being ModeratedNov 6, 2012 11:23 AM (in response to montagular)
Bengt has some good thoughts. Regarding your basic question, an image file (.img) should be portable from one Mac to another. One problem is that dual-layer image files can be troublesome -- here's a start on that discussion -- search if you'd like more info: https://discussions.apple.com/thread/4218292?start=0&tstart=0
In terms of workflow, I use Roxio Toast to "Copy" the disc image to physical media. You need to create a video DVD as your end product rather than a data DVD. Depending on the software you're using to burn the physical DVD, the steps to accomplish this may be different.
Currently Being ModeratedNov 8, 2012 7:15 AM (in response to montagular)
The first disc I tried creating like this could be played on a computer using VLC (and the menu was operational, it wasn't just reading the video file), but it didn't work on either of the regular DVD players I tried
I'd like to add this to the good advice already given by Bengt and John: You need to check the disk image on your MBP before transferring it. My workflow would look like this:
• Create the disk image in iDVD. Mount it and launch DVD Player. Test everything.
• Transfer to external storage (formatted as HFS+ as said above)
• Transfer to MBA and check again with DVD Player. If OK so far the only thing that could go wrong is burning.
• Burn at slow speed (2x - 4x) using high quality DVD-R media. Verbatim has a good track record around here.