# img in bz2 is recognized by Etcher as zettabytes large, if I use 7zip to extract the img first it works ok

**URL:** <https://forums.balena.io/t/img-in-bz2-is-recognized-by-etcher-as-zettabytes-large-if-i-use-7zip-to-extract-the-img-first-it-works-ok/144602>\
**Category:** balenaEtcher\
**Created:** [June 26, 2020, 12:29pm UTC](https://forums.balena.io/t/img-in-bz2-is-recognized-by-etcher-as-zettabytes-large-if-i-use-7zip-to-extract-the-img-first-it-works-ok/144602 "2020-06-26T12:29:56Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![xeneks](https://avatars.discourse-cdn.com/v4/letter/x/13edae/32.png) [@xeneks](https://forums.balena.io/u/xeneks)\
**Post date:** [June 26, 2020, 12:29pm UTC](https://forums.balena.io/t/img-in-bz2-is-recognized-by-etcher-as-zettabytes-large-if-i-use-7zip-to-extract-the-img-first-it-works-ok/144602/1 "2020-06-26T12:29:56Z")

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Hi,

using file OPNsense-20.1-OpenSSL-vga-amd64.img.bz2 (and others)  
from site [http://mirror.as24220.net/opnsense/releases/mirror/](http://mirror.as24220.net/opnsense/releases/mirror/) (opnsense official Australian mirror)

Balena Etcher shows them as 9.44 ZB large. Understandably while writing I didn’t wait for 1%…  
If I use 7zip to decompress first, then write, image is 1.2 GB or so and writes just fine.

A bug in the bz2 decompress routine to do with the version of bz2 used on the opnsense files? No idea, just throwing ideas around. Anyway, I love the software, so had to share the hiccup.

PS: win10 x64 etcher 1.5.100

Best,  
xenek

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**Author:** ![richbayliss](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/richbayliss/32/1054_2.png) [@richbayliss](https://forums.balena.io/u/richbayliss)\
**Post date:** [June 26, 2020, 12:37pm UTC](https://forums.balena.io/t/img-in-bz2-is-recognized-by-etcher-as-zettabytes-large-if-i-use-7zip-to-extract-the-img-first-it-works-ok/144602/3 "2020-06-26T12:37:20Z")

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Thanks for bringing it to our attention.

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**Author:** ![richbayliss](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/richbayliss/32/1054_2.png) [@richbayliss](https://forums.balena.io/u/richbayliss)\
**Post date:** [June 26, 2020, 12:41pm UTC](https://forums.balena.io/t/img-in-bz2-is-recognized-by-etcher-as-zettabytes-large-if-i-use-7zip-to-extract-the-img-first-it-works-ok/144602/4 "2020-06-26T12:41:18Z")

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I have linked this to a GH issue so if this gets addressed then we will update you 👍