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"use integer" limits integers to 2^31-1 on 32 bits, which makes imgsize to be -1 on DVD images Signed-off-by: Pascal Terjan <pterjan at mandriva.com> --- utils/isohybrid.in | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/utils/isohybrid.in b/utils/isohybrid.in index 4671036..e98c59f 100644 --- a/utils/isohybrid.in +++ b/utils/isohybr...

...a vector for the list element i SET_VECTOR_ELT(result, i, allocVector(INTSXP, size[0] * size[1])); // getting a pointer to the element to simlify coding SEXP element = VECTOR_ELT(result, i); // writing some values to the element // converting element into a matrix setAttrib(element, R_DimSymbol, imgSize); Thanks in advance for help Oleg Dr Oleg Sklyar European Bioinformatics Institute Wellcome Trust Genome Campus Hinxton, Cambridge, CB10 1SD England phone/fax +44(0)1223 49 4478/4468 e-mail osklyar@ebi.ac.uk

Op 2014-06-20 om 15:56 schreef Ady: > > The Perl variant, isohybrid.in, seems to be getting left behind > regarding several patches. I don't recall whether there is at least > some mention in the isohybrid docs about the existence of 2 variants > included in Syslinux (and that is in addition to other isohybrid > methods outside Syslinux). Is there any reference? >

I have addressed all the issues that I know about (including, hopefully, the isohybrid version dependence...). I would like to release this this week so please let me know as soon as possible if this version is "go". -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.

> > Same result as yours. > > > Have a nice day :) > > Thomas > I was under the impression (apparently the wrong one) that your pseudo-code was adding 4 cylinders to the first example, from 132 to 136, which would be non-optimal. Since I am not a developer, I believe you when you say that such jump won't happen :). Perhaps the code will be more clear to me

Hi, my proposal is based on a mathematical proof (see mail before) and yours is correct too. They cannot but match. Let's inspect your examples: Ady wrote: > ISO size: 1'085'736'960 bytes ( > 1GiB) This are exactly 132 cylinders of 255x63. 132 is divisible by 4. So there is no padding needed. > Cylinders (1st attempt)=132 > [...] > 2120580 / 4 = 530145, so

...144709 ve[8]: 26997, cs: 171706 ve[9]: 27749, cs: 199455 ve[10]: 20512, cs: 219967 ve[11]: 31343, cs: 251310 ve[12]: 27002, cs: 278312 ve[13]: 32, cs: 278344 ve[14]: 5731, cs: 284075 ve[15]: 43605, cs: 327680 de_boot: 136 de_media: 0 de_seg: 0 de_sys: 0 de_mbz1: 0 de_count: 4 de_lba: 327 de_mbz2: 0 imgsize: 2265417728, padding: 555008 isohybrid: Warning: more than 1024 cylinders: 2161 isohybrid: Not all BIOSes will be able to boot this device id: 281396446 sizeof(MBR): 512 bytes ... 0432 1c 05 00 00 00 00 00 00 de c4 c5 10 00 00 80 00 |................| 0448 01 00 17 3f e0 ff 00 00 00 00 00 88...

...or * 512; - frac = isostat.st_size % cylsize; - padding = (frac > 0) ? cylsize - frac : 0; + align_cylsize = cylsize * align_factor; + frac = isostat.st_size % align_cylsize; + padding = (frac > 0) ? align_cylsize - frac : 0; if (mode & VERBOSE) printf("imgsize: %zu, padding: %d\n", (size_t)isostat.st_size, padding); ------------------------------------------------------------------------ I wrapped the essential code into a standalone program for playing with a few numbers: -h 255 -s 63 , ISO size 1085739008 : align_factor= 4 , padding= 3289907...

...rt(descriptor.block_size); + free_space = isostat.st_size - isosize; + cylsize = head * sector * 512; frac = isostat.st_size % cylsize; padding = (frac > 0) ? cylsize - frac : 0; @@ -508,7 +961,7 @@ main(int argc, char *argv[]) if (mode & VERBOSE) printf("imgsize: %zu, padding: %d\n", (size_t)isostat.st_size, padding); - cc = c = (isostat.st_size + padding) / cylsize; + cc = c = ( isostat.st_size + padding) / cylsize; if (c > 1024) { warnx("Warning: more than 1024 cylinders: %d", c); @@ -548,6 +1001,62 @@ main(i...