UDMA
UDMA (Ultra DMA) -
the improvement of DMA technology,
reducing CPU usage during read/write operations with a hard drive.
UFS
UFS (UNIX File System) - the filesystem used in UNIX, Linux and older MacOS versions.
Unallocated space
Unallocated space -
a hard drive space which doesn't belong to any filesystem or partition.
Undelete (unerase)
Undelete (unerase) - a recovery of files after an accidental deletion.
Unformat
Unformat - data recovery after a storage device has been formatted.
Unicode
Unicode -
the standard of symbol encoding which allows representing characters of almost all languages.
In Unicode, 16 bits are used to represent the symbol.
USB
USB (Universal Serial Bus) -
the standard on the connector and on the method of data transfer.
There are three versions in use: USB 1.1, USB 2.0 and USB 3.0. USB is used to connect various slow and medium-speed devices.
Only USB 2.0 and USB 3.0 with bandwidth from 40 to 400 Mb/sec should be used for data recovery.
USB enclosure
USB enclosure (also called USB box) -
a device to connect hard drive to a computer via a USB port.
USB thumbdrive
See Thumbdrive.
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