problem with multi-part RAR2 archive
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#157 problem with multi-part RAR2 archive
I gota maulti-part RAR2 archive, which has the
extension .001 to .0xx. 7-Zip has the .001 extention
registered as file type (I know, it's a different
archive). I opened the archive by normal double-click
and 7-Zip showed me the right file in it, but it was
missing the fileextention. I extrated it, etraction
worked fine. I renamed the file to have the right
extention and loaded it and itwas invalid. When I used
WinRAR and extracted the archive and the file was OK. I
renamed the archive to .rar and it was everything OK.
It seems like 7-Zip decides on extention, what kind of
archive it is from etention, what is a bad thing. I
should decide by header...
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One rar archive can be splitted to .001 .002 (without rar
format).
Please use valid (and recommended) rar extensions for rar
archives.
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I know, that RAR archives can be split and that .00x
extention is also used for RAR multi-part acrhives. And I
didn't reate that archive. The problem is, that 7-Zip
doesn't seem to totally recognise it as RAR archive and
extracts it the wrong way. WinRAR and other tools handle
those files correctly
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RAR doesn't support split files.
When 7-Zip see .001 file, it thinks that it's split file (divided
file without any headers).
If you follow RAR rules about extension, you will not have any
problems with RAR archives.
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RAR *does* support split files.
RAR2 (actual one is RAR3) split files were normally names
.rar -> .r00 -> .r01 -> .rxx. BUt in some cases it was also
named .0xx. I am aware, that .001 archives in 7-Zip aren't
RAR split archives, but if it's a RAR file, 7-Zip should
recognise, that's not a .011, but a RAR split file. Just
relying on the file extention isn't a good way IMO. I would
check the code to better state my problem or suggest a fix,
if one is needed, but I hab problems to compile it, because
of a Microsoft SDK, which is needed....
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7-Zip treats each file with .001 extension as split archive.
It doesn't look at header (since split archive has no header).
For example you create .rar archive, then go to Total
Commander and split file to parts with .001 .002 extensions.
RAR probably doesn't extract that file, since probably it
doesn't support split archives.
So we have .001 with RAR header. But we must extract whole
at first (before moving it RAR).
.001 .002 split is universal and simplest split type. So it must
have priority before other formates.
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I've also seen this same problem several times with multi-part
rar archives. 7-ZIP extracts them to a single file with no
extension. If you make the extension ".rar", you can open and
view the files within, but attempts to extract them fails.
WinRAR works fine.