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Thread ID: 78959	2007-05-03 12:34:00	Corrupted Backup File	WayneD (12202)	Press F1

Post ID	Timestamp	Content	User
546723	2007-05-03 12:34:00	:annoyed: I backed up various files, eg outlook express, Microsoft word, legacy genealogy etc to a Verbatim DVD-R 1X-4X 4.7MB Disc using the NTI backup CD and DVD maker backup program that came with my Acer Laptop. The backup file format is NBF and the size is 131MB. When I try to open this file either from the DVD or when it has been transferred to the C Drive using the NTI program I get a message "corrupted file". I have updated the NTI program but still get the same message "corrupted file" when I try to open the file. The DVD drive in my Acer Notebook is a Pioneer Model DVR-K15RA. It lists an 8X maximum for +DVR-R and -DVD-R. Would it be possible to record at X8 on a X4 DVD-R disc? Perhaps the file was corrupted because it was recorded at a higher speed than the DVD could handle. :help: Do you have any suggestions as to how the data on this disc can be recovered? Perhaps a data recovery program could be used. I reformatted the hard drive on my Laptop after this backup so would very much want to recover the data.	WayneD (12202)
546724	2007-05-03 14:05:00	Well I am not sure but you could try isobuster but I think it will cost ya: http://www.isobuster.com/	zqwerty (97)
546725	2007-05-03 21:50:00	Isobuster won't help if you can already see the .nbf file and it is a proprietry format. Have you tried any of the other archive formats like zip on the file?	PaulD (232)
546726	2007-05-03 23:30:00	The DVD writer will always perform a test write on an are of the disk designed for this purpose to ensure it can write and read and will self adjust the speed to one that both the writer and disk will handle, usually at or beow the capabilities of the slower of the two. The error rate on DVD/CD media can be quite high, I would never trust a single copy of anything, even then I verify all burns against the original file.	godfather (25)
546727	2007-05-04 02:20:00	The DVD writer will always perform a test write on an are of the disk designed for this purpose to ensure it can write and read and will self adjust the speed to one that both the writer and disk will handle, usually at or beow the capabilities of the slower of the two. The error rate on DVD/CD media can be quite high, I would never trust a single copy of anything, even then I verify all burns against the original file. Thankyou Godfather I thought that this would be the situation	WayneD (12202)
546728	2007-05-04 02:31:00	Well I am not sure but you could try isobuster but I think it will cost ya: http://www.isobuster.com/ :annoyed: I have downloaded Isobuster where you can use some features for free. When click onfind missing files comes up with UDF Lost and Found and Files found via their signature. Then when I click on Extract UDF Lost and Found I get a message "for this functionality you need to register. Do you think that there are UDF files which could be extracted should I purchase this Isobuster program?	WayneD (12202)
546729	2007-05-04 02:36:00	Isobuster won't help if you can already see the .nbf file and it is a proprietry format. Have you tried any of the other archive formats like zip on the file? Can't see the NBF file it is in an NTI folder that indicates an NBF file. Haven't tried zip on the file but will do so.	WayneD (12202)
546730	2007-05-04 04:12:00	It's all a bit sad. The time to test a backup is immediately after it has been made. Just before making the second copy and testing that one. I hate the idea of multimegabyte compressed single-file backups. :groan:	Graham L (2)
546731	2007-05-04 05:28:00	I hate the idea of multimegabyte compressed single-file backups. :groan: I agree. One small corruption and all data can be/will be lost. Just tried out the Vista backup application out of curiosity, pleased to see it created a host of plain .zip files, which would at least limit the damage by corruption.	godfather (25)
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