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where `0x80` is the first hard drive and the value of `EDD_MBR_SIG_MAX` macro is 16. It collects data into the array of [edd_info](https://github.com/torvalds/linux/blob/master/include/uapi/linux/edd.h#L172) structures. `get_edd_info` checks that EDD is present by invoking the `0x13` interrupt with `ah` as `0x41` and if EDD is present, `get_edd_info` again calls the `0x13` interrupt, but with `ah` as `0x48` and `si` containing the address of the buffer where EDD information will be stored.
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where `0x80` is the first hard drive and the value of `EDD_MBR_SIG_MAX` macro is 16. It collects data into the array of [edd_info](https://github.com/torvalds/linux/blob/master/include/uapi/linux/edd.h#L172) structures. `get_edd_info` checks that EDD is present by invoking the `0x13` interrupt with `ah` as `0x41` and if EDD is present, `get_edd_info` again calls the `0x13` interrupt, but with `ah` as `0x48` and `si` containing the address of the buffer where EDD information will be stored.
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0xAX