Why the SFV Code is "FFFFFFFF"?
Moderators: Hacker, petermad, Stefan2, white
Why the SFV Code is "FFFFFFFF"?
I downloaded ttcmd 6 and use its "Create CRC Checksums(SFV Format)" function and found sfv code of some files are "FFFFFFFF", Why?
- Ivan Moratinos
- Junior Member
- Posts: 46
- Joined: 2003-11-25, 16:13 UTC
- Location: Spain
Maybe the files are too largeISO files created by M$ CDIMAGE ?

Esperanto estas la solvo - http://ikso.net/
CD1MAGE is for M$ internal using only, so we should not talk about it more 
As I know, SFV value of all ISO files created by it are 'FFFFFFFF', even if the file size is large than 700M or less than 64k
.\test.zip\test.iso\REGISTER.WRI of TC6

As I know, SFV value of all ISO files created by it are 'FFFFFFFF', even if the file size is large than 700M or less than 64k

.\test.zip\test.iso\REGISTER.WRI of TC6
Code: Select all
begin 644 test.zip
M4$L#!!0``@`(`"B3>B______9`@```#P```(````=&5S="YI<V_MG$UL6UD5
MQ\^+TWRU@0':::A&PREJ&7LF=FSGHXDU(^1QG-2BJ2,G;5I*"2_VB_WH\WON
M>\]MPJ+J;``)56Q&11H!@L4((80&%@A6((1FSX+%B!$2VP&$6($0$L.YUW::
MC[8.**4P^?\<G_=Q[SW_<[_M.#$1````````````````````````````````
M````````````````````````````````````````````````````````````
M`````````````(S<;#*9,HB[D)M=+147'IW>\??\CL-C=.5'/6E@@(9:MX9.
M/$A^5IE/TDCK:L1O'?WJT5,?_3AQ3Z=\MZB>-`N%7*FX5)Q;YERQM%@L99<+
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M````````_^]T/O\WO_6/MSJ?___HS?=_^R]02P$"%``4``(`"``HDWHO____
M_V0(````\```"````````````"``````````=&5S="YI<V]02P4&``````$`
,`0`V````B@@`````
`
end
sum -r/size 25701/2262
- ghisler(Author)
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It seems that these ISO files are created so they have FFFFFFFF as CRC value! If I change a single byte, the SFV will change...
Author of Total Commander
https://www.ghisler.com
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