STOP 0x000000ED UNMOUNTABLE_BOOT_VOLUME

The kernel mode I/O subsystem attempted to mount the boot volume and it failed.

This error might also occur during an upgrade to Windows XP on systems that use higher throughput ATA disks or controllers with incorrect cabling. In some cases, your system might appear to work normally after you restart. This error is closely related to STOP_0x0000007B_INACCESSIBLE_BOOT_DEVICE. You may also have to perform disk error checking.


When you use volumes that use the NTFS file system on integrated device electronics (IDE) drives with caching enabled, you may receive the following error message during startup:

Stop 0x000000ED Unmountable_Boot_Volume


When you first restart your computer during the upgrade to Windows XP or when you start Windows XP, you may receive the following error message, where aaaaaaaa, bbbbbbbb, cccccccc, and dddddddd are hexadecimal numbers that may vary:

STOP 0x000000ED (0xaaaaaaaa, 0xbbbbbbbb, 0xcccccccc, 0xdddddddd)
UNMOUNTABLE_BOOT_VOLUME



When booting up to Win XP you may get a error that reads "Unmountable Boot Volume".


The bootcfg command is a Microsoft Windows XP Recovery Console command that manipulates the Boot.ini file. This command has a function that can scan your hard disks for Microsoft Windows NT 4.0, Microsoft Windows 2000, and Windows XP installations, and then add them to an existing Boot.ini file. The function can also rebuild a new Boot.ini file if one does not exist. With the bootcfg command, additional Boot.ini file parameters can be added to existing or new entries.