Zip64 viewer/extractor program

You can ask general questions, share opinions or advices about FBackup
realbernie
Posts: 3
Joined: Mon Dec 06, 2010 3:30 pm

Postby realbernie » Tue Dec 07, 2010 5:49 pm

The FBackup free software works really well. But I'm struggling to find a free zip64 program that will allow me to view/extract the FBackup zipfile "offline". The normal 7-Zip program doesn't recognise it. There is a 7-Zip 64-bit program available, but when I try to install it I am told my processor does not support it (I'm using a Windows PC with an "x86 Family 6 Intel processor at 2400MHz" according to my System Info). However the PC type isn't relevant - it's the machine that the FBackup created the zip file on, so what is the zip64 program buried within FBackup - is it free to users too?


Thanks for any help



Softland
Posts: 1666
Joined: Thu May 23, 2013 7:57 am

Postby Softland » Tue Dec 07, 2010 10:14 pm

Hi,


As I understand from your post, you are trying to install the 64-bit edition of 7-Zip to a 32-bit host computer. You cannot do that. Please try to install the 32-bit edition of 7-Zip.



realbernie
Posts: 3
Joined: Mon Dec 06, 2010 3:30 pm

Postby realbernie » Tue Dec 07, 2010 10:39 pm

Thanks for your reply Admin. I have already anticipated this reply because, while that may be the ptoblem with the 64-bit 7-Zip program, the FBackup program somehow created a zip64-format archive on my 32-bit host computer! If FBackup can do this then there must also be a stand-alone program that can run on a 32-bit computer and create, extract or just view a zip64-format archive. Or am I missing something?



Softland
Posts: 1666
Joined: Thu May 23, 2013 7:57 am

Postby Softland » Wed Dec 08, 2010 3:16 pm

Hi,


The 64-bit OS and zip64 file format are not related.


The original ZIP format had a 4 GiB limit on various things (uncompressed size of a file, compressed size of a file and total size of the archive), as well as a limit of 65535 entries in a ZIP archive. In version 4.5 of the specification (which is not the same as v4.5 of any particular tool), PKWARE introduced the "ZIP64" format extensions to get around these limitations increasing the limitation to 16 EiB (264 bytes). ZIP64 support is emerging. For example, the File Explorer in Windows XP does not support ZIP64, but the Explorer in Windows Vista does.



realbernie
Posts: 3
Joined: Mon Dec 06, 2010 3:30 pm

Postby realbernie » Wed Dec 08, 2010 9:47 pm

Thanks Admin, that confirmed what I suspected.


The link to download a free program to extract the FBackup zip64 file independently of the FBackup program is here:

http://www.pkware.com/downloads/zipreader/home?dtype=soho&dlp=ZR&choice=3


Unfortunately the program does not allow you to view the zip64 file contents without extracting them, which is a little inconvenient. The same appears to be the case with the FBackup free edition: you can only "Restore" the files (another word for extracting them).


Unless I've missed somethign, is there a facility within FBackup to just view the files within a zip64 backup without first restoring them?


Apologies for the hassle by the way - FBackup is actually a very useful free program - I do appreciate your making it available! Thanks again.



Softland
Posts: 1666
Joined: Thu May 23, 2013 7:57 am

Postby Softland » Thu Dec 09, 2010 1:19 pm

Hi,


You cannot see the zip file contents with FBackup, you need to restore it.




Return to “General”