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  2. Macintosh startup - Wikipedia

    en.wikipedia.org/wiki/Macintosh_startup

    A Happy Mac is the normal bootup ... The icon indicates that the machine has failed to successfully boot on startup, in contrast to the Happy Mac icon, which displays ...

  3. Bootloader - Wikipedia

    en.wikipedia.org/wiki/Bootloader

    In x86 computers, a first-stage bootloader is a compact 512-byte program that resides in the master boot record (MBR) and executes when a computer starts. Running in 16-bit real mode at address 0x7C00, it performs minimal hardware initialization, sets up a basic execution environment, and locates the second-stage bootloader. Its primary ...

  4. Mach (kernel) - Wikipedia

    en.wikipedia.org/wiki/Mach_(kernel)

    For instance, a printer driver might send a line of text to a line printer and then have nothing to do until the printer completes printing that line. In this case, the driver indicates that it was blocked, and the operating system allows some other program to run until the printer indicates it is ready for more data.

  5. Das U-Boot - Wikipedia

    en.wikipedia.org/wiki/Das_U-Boot

    Das U-Boot (subtitled "the Universal Boot Loader" and often shortened to U-Boot; see History for more about the name) is an open-source boot loader used in embedded devices to perform various low-level hardware initialization tasks and boot the device's operating system kernel.

  6. Bootloader unlocking - Wikipedia

    en.wikipedia.org/wiki/Bootloader_unlocking

    Bootloader unlocking is the process of disabling the bootloader security that makes secure boot possible. It can make advanced customizations possible, such as installing custom firmware . On smartphones , this can be a custom Android distribution or another mobile operating system .

  7. Keira Knightley Reveals the Unusual Reason She Doesn ... - AOL

    www.aol.com/lifestyle/keira-knightley-reveals...

    Keira Knightley’s number one reason for having no more kids isn’t the pain of childbirth or the endless nights of disrupted sleep. On Monday, Dec. 9. the actress, 39, gushed about her two ...

  8. Mortgage and refinance rates for Nov. 21, 2024: Average rates ...

    www.aol.com/finance/mortgage-and-refinance-rates...

    Freddie Mac weekly mortgage report: Rates stall post-election and Fed rate cut. Freddie Mac reports an average 6.78% for a 30-year fixed-rate mortgage, down 1 basis point from last week's average ...

  9. UEFI - Wikipedia

    en.wikipedia.org/wiki/UEFI

    Mac OS X v10.4 Tiger and Mac OS X v10.5 Leopard implement EFI v1.10 in 32-bit mode even on newer 64-bit CPUs, but full support arrived with OS X v10.8 Mountain Lion. [ 125 ] The Itanium versions of Windows 2000 (Advanced Server Limited Edition and Datacenter Server Limited Edition; based on the pre-release Windows Server 2003 codebase ...