Event ID - 56

Event Id56
SourceATAPI
DescriptionThe driver failed to allocate memory.
Event InformationAccording to Microsoft:
If you install a copy of Windows 2000 that includes SP3 (SP3 integrated) on a large hard disk that has already been preformatted by using a 48-bit LBA-enabled operating system, the ATAPI subsystem may report hard-disk space greater than that which is addressable without the 48-bit LBA support (larger than approximately 137 GB) during the text-mode portion of Setup. In this case, the hard disks partition table information has already been created. To fix the incorrect disk information, delete the partition by using either a disk partitioning utility or by deleting and then re-creating the partition during the text-mode portion of Setup. After you create the new partition, quit Setup by pressing F3, and then restart the Windows installation process. The ATAPI subsystem now correctly shows approximately 137 GB of hard disk space.
Reference Links48-Bit LBA Support for ATAPI Disk Drives in Windows 2000

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