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The Ultimate Boot CD contains freeware and open-source diagnostic tools from a variety of sources. Many of these tools were originally designed to boot from a floppy disk drive. The Ultimate Boot CD made it possible to run them on a PC without a floppy drive. [5] UBCD can also run from USB for computers without an optical drive. [5]
EasyBCD has a number of bootloader-related features that can be used to repair and configure the bootloader. From the "Manage Bootloader" section of EasyBCD, it is possible to switch between the BOOTMGR bootloader (used since Windows Vista) and the NTLDR bootloader (used by legacy versions of Windows, from Windows NT to Windows XP) in the MBR from within Windows by simply clicking a button.
The live cd iso file being installed needs to match the system being used; for 64-bit x86-64 processors amd64 is used, for 32-bit IA-32 processors i686 is used. [9] The supported architecture is listed at the end of the iso filename. The CD can also boot from a customized DVD which has almost 4.6 GB of free space for backed-up files.
repair boot file, using the bootcfg command; write a new master boot record to a disk, using the fixmbr command; write a new volume boot record to a volume, using the fixboot command; format volumes; expand files from the compressed format in which they are stored on the installation CD-ROM
TestDisk reads sectors on the storage device to determine if the partition table or filesystem on it requires repair (see next section). TestDisk is able to recognize the following partition table formats: [2] Apple partition map; GUID Partition Table; Humax; PC/Intel Partition Table (master boot record) Sun Solaris slice; Xbox fixed ...
A typical recovery disk for an Acer PC.. The terms Recovery disc (or Disk), Rescue Disk/Disc and Emergency Disk [1] all refer to a capability to boot from an external device, possibly a thumb drive, that includes a self-running operating system: the ability to be a boot disk/Disc that runs independent of an internal hard drive that may be failing, or for some other reason is not the operating ...
For information about generic boot/recovery discs, see Recovery disc; A Microsoft Windows Emergency Repair Disk (ERD) is a specially formatted diskette that creates backups of important system files and settings and is used to troubleshoot and repair problems in Microsoft Windows NT and Windows 2000 systems. An ERD is used in conjunction with ...
A modern PC is configured to attempt to boot from various devices in a certain order. If a computer is not booting from the device desired, such as the floppy drive, the user may have to enter the BIOS Setup function by pressing a special key when the computer is first turned on (such as Delete, F1, F2, F10 or F12), and then changing the boot order. [6]