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#67006 - 05/10/08 10:48 AM Problem with SD Explorer
RC Offline
Member

Registered: 04/29/02
Posts: 85
Loc: Pa Usa
I used the back up as instructed for backing up my card with the folders and songs on them. I had 19 folders with 20 songs in each. When I put the card back in the keyboard KN7000 it was all messed up. I then went back to the computer and went to restore the card. It said that there were other songs there and in order to do that they had to be deleted. I hit okay. It started to delete and then it stopped and said that one file could not be deleted. I hit okay and it quit. I put the card back in the computer and it is now blank. I lost all of my songs that I had made up with the backgrounds.I tried doing it again to no avail. Anyone else out there ever had this problem with the sd card and do you have any suggestions or should I just kiss them all goodby. Thanks

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#67007 - 05/10/08 12:54 PM Re: Problem with SD Explorer
technicsplayer Offline
Senior Member

Registered: 01/17/02
Posts: 3319
if you have performed no more write actions to the card (which will destroy more and more deleted data) it is possible some or all files may be recoverable. I have done this many times successfully with e.g. deleted camera images, sometimes finding images deleted many months ago. This is because most camera format actions involve wiping the fat table and leaving the data intact, giving the impression to operating systems of an empty card, and card controllers rotate memory cell usage to even wear out across the whole structure rather than write to the same cells again and again thus wearing those out faster than others.

If you google there are quite a few free data recovery programs and many pay but allowing a free scan to identify recoverable files files before you buy. I have several data recovery programs in my arsenal since no one performs better than all others in all circumstances, so it is worth trying a few to get the best result.

I have never been in the position of having to recover a technics sd card but the basic rules to follow are:

1 the files will all have numerical names and will have to be arranged in the exact original folder hierarchy, that is PRIVATE/TECHNICS/KN7000/TFLD001 etc etc, to be seen in the keyboard via sd.

2 The files are a collection of *.cmp, *.tm, *.lsw etc etc and those of the same file name must be grouped and copied together to load correctly.

3 For the above reasons it might be much simpler to copy any recovered files to the root of a floppy disk rather than an sd card structure to be seen more easily in the keyboard. They will load just the same.

4 Just make sure that each floppy contains groups of only sequential file names i.e those starting with 01, 02, 03 etc without several groups starting with 01 on the same floppy where only one will be seen in the load screen.

5 If the KN7000MN.INF or the KN7000MN.BAK files are unrecoverable you have lost all your screen file names. But the *.cmp, *.tm etc content collection files can still be loaded under their numerical names and then re-saved with a new name.

Success does depend how sd explorer has deleted the data, if this entailed a low level format (which some cameras have) it is lost forever, a high level format or normal windows delete is recoverable in the vast majority of situations providing no more writing is done to the card.

So not necessarily impossible but needing a little experience to put back on sd, easier to recover in batches to a floppy and then copy to sd and rename etc.

For general information to other readers there is nothing special about sd explorer or song manager backups. You can backup your sd card just by copying the contents to a folder or zip file on your pc, and restore it to a blank card just as easily for all data except aac audio, which should always have a backup in jukebox anyway (and outside of jukebox!)

Good luck.

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#67008 - 05/10/08 01:38 PM Re: Problem with SD Explorer
RC Offline
Member

Registered: 04/29/02
Posts: 85
Loc: Pa Usa
Thanks Alex. I did recoverer them. I am not a computer whiz but seeing the files would not delete and it quit I put the card back in and formatted it. This then wiped the card clean. I went back into the restoring portion of the sd explorer after the card was wiped clean. This time it restored everything. Boy am I glad of that. Thanks again for your information I greatly appreciate it. RC

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#67009 - 05/10/08 01:57 PM Re: Problem with SD Explorer
technicsplayer Offline
Senior Member

Registered: 01/17/02
Posts: 3319
so the backup file was fine, and you had some unexplained corruption on the write, formatting cleared that enabling the backup to write properly.... you can't have enough backups!

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#67010 - 05/10/08 04:36 PM Re: Problem with SD Explorer
Audrey Turner Offline
Senior Member

Registered: 03/19/02
Posts: 1098
Loc: Cambridge, Cambs, England
I'll second that Alec.

Having lost songs because of not backing up properly, I took your advice and now save all my songs to floppy first, (this being my original backup if you like). When the floppy is full, I then save to an SD Card using the 'Copy Disk' function because it is much quicker than saving each song one at a time. By the same token, if for any reason I want to delete songs, it is quicker to put in a 'BLANK' floppy and again using the 'Copy Disk' function, the songs are deleted - much quicker than deleting one at a time. When the SD Card is loaded I then BACK IT UP to the PC using the KN SD Explorer Tool.

This was an excellent piece of advice Alec which has proved invaluable over the years and I thank you for that.

Audrey

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