Issue 13 in snapbackup: max zip file asks for password? says zip not readable size=4,072,832,502 snap.backup_2012-11-22.zip

[snapb...@googlecode.com]

Status: New
Owner: ----
Labels: Type-Defect Priority-Medium

New issue 13 by stevedon...@gmail.com: max zip file asks for password? says
zip not readable size=4,072,832,502 snap.backup_2012-11-22.zip
http://code.google.com/p/snapbackup/issues/detail?id=13

What steps will reproduce the problem?
1.when zip is max size it asks for password t open
2.
3.

What is the expected output? What do you see instead?
error is; archive not readable would like to try a password
using 7-zip
What version of the product are you using? On what operating system? latest
as of 11-22-12


Please provide any additional information below.


Attachments:
snapBackup.unable to.open.Max.size.zipbackup.odt 130 KB

[snapb...@googlecode.com]

Comment #1 on issue 13 by stevedon...@gmail.com: max zip file asks for

password? says zip not readable size=4,072,832,502
snap.backup_2012-11-22.zip
http://code.google.com/p/snapbackup/issues/detail?id=13

This is a VERY important backup, now that my computer was lost. It was
created on win 7 pro 64 bit. I got the error when trying extract using 7zip
or windows own unzip on the same OS. I now try to extract in good old win 7
32bit, and I get invlaid file file. the file size is 4gig.

The exact actual size is: 3,977,376kb, I really need the data in this
backup. Is there any brute force unzip program that will attempt to
display it's contents?
Filename file date file type
snap.backup.2012-11-22 11/22/12 11:41 am Compressed(zipped)Folder

[snapb...@googlecode.com]

Updates:
Status: Accepted

Comment #2 on issue 13 by pilaftank: max zip file asks for password? says

zip not readable size=4,072,832,502 snap.backup_2012-11-22.zip
http://code.google.com/p/snapbackup/issues/detail?id=13

I am not aware of any brute force unzip programs, but they may exist. The
zip format, unfortunately, has a 4GB file size limit. This limitation is
supposedly fixed for Java 7.

Snap Backup displays the following message if the zip file is larger than
3.8 MB:
"*** ERROR #40 ~ Backup file may exceed 4 GB limit -- file corruption
possible!"

See Issue #8 for details.