flat assembler
Message board for the users of flat assembler.
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cod3b453 20 Jun 2012, 20:54
When you say you have copied the kernel file, did you use dd to place it or the host OS (windows/unix) ? Are you loading the kernel using file system lookup or absolute addressing?
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dilipcs1992 21 Jun 2012, 09:27
i'm using windows as host os to copy kernel and I'm loading kernel using file system lookup
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Dex4u 21 Jun 2012, 12:25
dilipcs1992 wrote: i'm using windows as host os to copy kernel and I'm loading kernel using file system lookup When you say system lookup, do you mean fat, if so you need different code than floppy, as the usb fob will be formated with fat16 or fat32. You also have the problem that you are over writing BPB of the fat. The default BPB that you get with demo boot loaders, is for fat12. |
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dilipcs1992 22 Jun 2012, 19:51
i have tried mike gonta's fat32 usb boot loader still same result..
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cwpjr 08 Jul 2012, 00:32
Dumb question. Does dd make a mbr and does USB use mbr's to boot?
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revolution 08 Jul 2012, 00:40
Whether or not you use an MBR is up to you. The BIOS will not enforce any requirement on the boot sector other than the last two byte signature requirement.
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cwpjr 08 Jul 2012, 02:01
My initial search for the standards for bios / usb boot bring up various tools for creating bootable this and that. Any suggestions
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Dex4u 08 Jul 2012, 02:08
revolution wrote: Whether or not you use an MBR is up to you. The BIOS will not enforce any requirement on the boot sector other than the last two byte signature requirement. If it supports usb hdd emulation, it works with or without BPB. This is from 100's of test on real PC. |
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egos 08 Jul 2012, 07:49
cwpjr wrote: Dumb question. Does dd make a mbr and does USB use mbr's to boot? _________________ If you have seen bad English in my words, tell me what's wrong, please. |
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