On 2018-08-22, Gareth Magennis wrote:
So, I recorded direct to USB stick a live event over 3 days.
Yamaha QL5 recording a 192kHz mp3.
First day fine, second and third days threw up 3, maybe 4 errors saying
problem with recording, recording stopped.
So I should have 6 or 7 files, but only have 3, the three that completed
with no errors.
Now, I have had a similar thing with a Midas32 where I forgot to turn off
the recording before the desk was powered down, leaving no file saved, but
this was recording WAV's.
I discovered that you can recover from this scenario because the WAV's are
continuously recorded onto a temp file before being converted to WAV.
From DOS, you can see these otherwise hidden files using a dir /a I think,
then rename them as WAV, and then import them to Audacity (or is that
Audition?) as a digital file with no header info.
The software is then be able to convert this into a proper WAV with the
proper heading, and you recover all the data, as I did.
I have been trying to do this with the missing mp3s but it doesn't seem to
work, DOS doesn't see any temp files.
I know the USB stick is continuously recording the data as the Midas WAV
does, you can see the LED flashing, so it should all still be there, if only
I could find a way to recover it like the WAV.
This is not a game changer at all, I only recorded it to USB in case it
actually worked properly - from past experience I knew this was quite
unlikely in the real world!
(Why? it is 2018 for god's sake)
These were meant to be 3 long recordings, 10 hours each.
Cheers,
Gareth.
Testdisk & Photorec are suited for this kind of job, where the (partial)
file has been written to disk/USBstick/Flashcard, but there has not
been a poiter written to the FAT (file allocation table), so it is
invisible from the OS's point of view.
https://en.wikipedia.org/wiki/PhotoRec
https://www.cgsecurity.org/wiki/PhotoRec
Downloads:
https://www.cgsecurity.org/wiki/TestDisk_Download
Robert.