How to unpack pkg file from OSX 10.10 and higher

Asked Jan 25 '16 at 10:11

Active Nov 07 '21 at 02:12

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I tried to extract Essentials.pkg from OS X 10.10 following by solution from this answer. But have no success.

I get error gunzip: unknown compression format if i try to extract with cmd: cat Payload | gunzip -dc |cpio -i

I get error: tar: Unrecognized archive format if i try to extract with cmd: tar xzvf Payload Could anyone suggest any solution?

edited May 23 '17 at 12:23

Community

asked Jan 25 '16 at 10:11

Maxim Kholyavkin

enter `file Payload` to get the file format. – orkoden Jan 25 '16 at 10:38
@orkoden `Payload: data` – Maxim Kholyavkin Jan 25 '16 at 10:41
The use `head Payload` and google for the first couple of magic bits. – orkoden Jan 25 '16 at 10:47
Initial bytes of Payload is `pbzx` - I tried to rename file to Payload.cpio.xz (i googled this extension) and i tried to extract it via GUI - without success too. – Maxim Kholyavkin Jan 25 '16 at 11:07
Try [this tool](http://www.tonymacx86.com/general-help/135458-pbzx-stream-parser.html) – orkoden Jan 25 '16 at 11:22
1

Thanks! I compiled this tool with `gcc -llzma -lxar pbzx.c` and successfully extract with it. – Maxim Kholyavkin Jan 25 '16 at 13:14

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