[ipxe-devel] wimboot customized WIM files

Hummel Frank F.Hummel at ads-tec.de
Mon Sep 16 12:13:53 UTC 2013

There seems to be a limit regarding the WIM file size using wimboot.
Please see more details here:
All wim files below a size of ~330MB boot ok.
But I use customized WIMs of ~440MB which always result in a 0xc000000d
or 0xc0000017 error while booting.
Of course there is plenty of RAM (up to 16GB) in the machines.
The same big wim files loaded via wdsnbp or via memdisk work.
Working memdisk example:
       set sanboot-url http://NNN.XXX.YYY.ZZZ
       dhcp net0 && echo IP address: ${net0/ip} ; echo Subnet mask:
       initrd ${sanboot-url}/win7pe/win7pe_x86.iso
       chain ${sanboot-url}/syslinux/memdisk iso raw
win7pe_x86.iso contains the very same Boot.wim as used in the following
wimboot example showing 0xc0000017 error:
	dhcp net0 && echo IP address: ${net0/ip} ; echo Subnet mask:
	kernel http://NNN.XXX.YYY.ZZZ/wimboot/wimboot
	initrd http://NNN.XXX.YYY.ZZZ/wimboot/win8_1/bootmgr.exe
	initrd http://NNN.XXX.YYY.ZZZ/wimboot/Boot/bcd bcd
	initrd http://NNN.XXX.YYY.ZZZ/wimboot/Boot/fonts/wgl4_boot.ttf
	initrd http://NNN.XXX.YYY.ZZZ/wimboot/Boot/boot.sdi boot.sdi
http://NNN.XXX.YYY.ZZZ/wimboot/win7pe_x86/sources/Boot.wim Boot.wim
Simply exchanging the Boot.wim link to a smaller WIM in the above script
leads to a working system.
All versions of bootmgr or bootmgr.exe (Vista ... Win8.1) lead to the
same 0xc000000d or 0xc0000017 error.
Maybe the file system gets corrupted if the WIM size exceeds 330MB?

Thanks for any ideas

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