get a data recovery program
No, when using the Norton 360 backup, files on the external HDD will not be deleted.
creating a new volume and recovering the files from a backup source
The files stored on the external HDD will not be deleted when using the Norton 360 backup.
Restore your computer to an earlier date when you had saved your file or Using ERD Commander disk to recover deleted files. Generally the second option works more better because i have used that.
You should backup your computer every two weeks. Your computer reminds you frequency because you add and delete files often and your computer could crash at anytime. Then those files that you added and deleted won't be in the backup when you get a new computer or fix the one you have.
If you rewrite your backup files. Then, yes your backup files will be rewrited (they might be the same or they can be different). The best way is to backup your files in another folder. If you are using standard window backup procedure your source files are safe because the windows backup utility just copies your files, but doesn't remove them. If you are using utility which wasn't a standard part of windows then you have to check settings very carefully. Some backup utilities do remove files instead of coping them.
The deleted files are from the MicroSD card, not the R4. You can use some Data Recovery programs, which might be able to recover whatever you deleted, but you are better off copying the files from your computer again (if you have a backup, or can redownload it)
Yes, as long as you have ever used the iTunes to sync files to your iPod Touch, even if the device is lost or you accidentally deleted or wiped out the data, you still have chances to recover those precious deleted files. If you have made backups on iTunes or iCloud, you could use a third-party tool like PhoneRescue to get back your deleted songs on your iPod touch. For no backup, you can still use the tool to retrieve songs directly from device.
A document cannot really be saved permanently. If someone decides to delete it, it can be deleted. To prevent this you should backup all your files, documents, photos, and music to an external source; preferably an online backup system.
If you've deleted your Windows 8 program files by mistake, you can do a recovery and put it back to factory settings. Make sure you backup your files before doing so.
You should perform a PC backup as often as you create new files. If you create numerous files a day, it is suggested that you do a backup very often. If you create very few files that require a PC backup, do it monthly.
You can check your recycle bin if deleted files are still there but if your files are permanently deleted then you should go for a recovery service. I have tried Stellar data recovery service to get my important files. You can go for it too.