>> License evilness. Better to have the EDR DOS style >> hack for files above 4 GB file size than "that". > > Than what "that" ??? Isn't it the same thing ???
I thought there was some discussion about exfat or whatever the MS thing for big files on embedded devices is, as that is not FAT in the DOS sense at all and highly proprietary... >> How about 64 kB? > > Heh ??? DOS can read or write full 64 KiB I was only talking about cluster sizes, not about the amount of data that you can read or write in a single int 21 call. The latter is indeed 65535 bytes, but I would prefer a multiple of the cluster size or 4096. Also, a cache can extend reads (read-ahead) or pool writes to larger chunks. Limits for that depend on the BIOS, e.g. 1 track or 127 sectors for floppy or older BIOSes but more when using LBA - at least the int 13.42 and 43 data block uses a WORD for number of to be read or written sectors, but I doubt that any BIOS would be happy to transfer 65535 sectors (almost 32 MB) in one call ;-) >> I think some hacks even support 128 kB > > I would highly nonrecommend hacks using 128 KiB clusters > (maybe that's what you meant ?). Yes, and I agree. Even 64 kB clusters are a bit evil. Eric ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ Freedos-kernel mailing list Freedos-kernel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-kernel
