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Little help with boot.img repack...

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  1. exile1975

    exile1975 Well-Known Member

    I've been at this for days learning to unpack my boot.img,, now I'm trying to repack it and for some reason it always comes out too small, a little more than half the original. I'm using cygdrive on windows. I've got a samsung admire using the stock kernel. Judging from the size I'd say it isn't re adding the kernel but I'm not sure.. Any help is much appreciated

  2. karandpr

    karandpr Well-Known Member

    unpack it again .
    if you have zimage and ramdisk then it was packed properly .

    Usually stock ROM are/have boot.img dumps which are larger in size .
    Dont be shocked if the packed kernel comes 50 p.c of size .
    exile1975 likes this.
  3. exile1975

    exile1975 Well-Known Member

    Its unpacking fine, and repacking fine, but when I mkbootfs it comes out half the size of the original. I'm using the correct page size and base. Next doing a usb linux install. F.ck windows

    Wait, are you saying to use it? That its normal?

    Edit 2:
    Holy crap. I was afraid to try because of the size difference, but it works. Thank you so much for taking the time to answer
  4. karandpr

    karandpr Well-Known Member

    It's perfectly normal.
    I have seen "10 MB" boot.img compressed to roughly 2-3 MB and they worked fine .

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