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Can't enter protected mode in my bootloader. http://forums.osdever.net/viewtopic.php?f=15&t=825 |
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Author: | Primis [ Tue Nov 02, 2010 12:00 pm ] |
Post subject: | Re: Can't enter protected mode in my bootloader. |
Here's a few questions to ask yourself: Have you set up a GDT? - Are all the entries zeroed out? - Do you have a null descriptor? - Do you have a data and code descriptor? Have you set up an IDT? - Are all the pointers set to zero? - Do you have a valid exception handler? Did you make sure interrupts are off before the switch? - Did you turn them back on? |
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