wimboot filename length restricted to 7 ?

[cckp]

Quote:
There shouldn't be any 7-character limit. wimboot supports long file names

sure , it does support long file names

but my point is , the boot.wim file name, not font name

tried many times , modified bcd using bcdedit, set it to point to diffent length boot.wim flenames

I found that the filename length of the .wim file
can be shorter than 8, like 4,5,6,7 ,
and can be longer than 8, like 9, 10 , 11,
but , can NOT be 8.

e.g. in bcd you can set it to point to
\sources\boot.wim (default , length is 4)
\sources\boot5.wim ( length is 5)
\sources\boot56.wim ( length is 6)
\sources\boot567.wim ( length is 7)
-
\sources\boot56789.wim ( length is 9)
\sources\boot567890.wim ( length is 10)

all boot ok with wimboot 2.2.4（uefi and bios）

but you can NOT set .wim name in BCD like this:
\sources\boot5678.wim ( length is 8)

but older version wimboot can boot with .wim filename length 8
and MS can boot directly from PXE using bootx64.efi with .wim filename length 8


this is not a problem , since almost all the time the length is 4, like "boot.wim", and there's option for 5 6 7 9 10 ...

but why can not be 8? interesting