Definitions

emergency rescue disk

Emergency Repair Disk

For information about generic boot/recovery discs, see Recovery disc

A Microsoft Windows Emergency Repair Disk (ERD) is a specially formated bootable floppy disk made by some Windows operating systems that contains information about a particular Windows installation. This disk is designed to be used with the NTFS file system, and can be used to restore a computer to a bootable state if the registry or other fundamental system components are damaged.

It is no longer used since Windows 2000 and replaced by the Automated System Recovery process.

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