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2. Disk Utility - Wikipedia

   en.wikipedia.org/wiki/Disk_Utility

   Mac OS X Leopard added the ability to create, resize, and delete disk partitions without erasing them, a feature known as live partitioning. In OS X El Capitan , Disk Utility has a different user interface and lost the abilities to repair permissions due to obsolescence , [ 6 ] create and manage disks formatted as RAID , burn discs, and multi ...

3. CHKDSK - Wikipedia

   en.wikipedia.org/wiki/CHKDSK

   On Windows NT operating systems, CHKDSK can also check the disk surface for bad sectors and mark them (in MS-DOS 6.x and Windows 9x, this is a task done by Microsoft ScanDisk). The Windows Server version of CHKDSK is RAID-aware and can fully recover data in bad sectors of a disk in a RAID-1 or RAID-5 array if other disks in the set are intact. [11]

4. List of data-erasing software - Wikipedia

   en.wikipedia.org/wiki/List_of_data-erasing_software

   Supported wipe methods Reports BleachBit: Andrew Ziem and contributors GNU General Public License: Windows, Linux: Yes external [1] on screen, Copy and Paste-able CCleaner: Piriform: Trialware: Windows, OS X: Yes external [2]? Darik's Boot and Nuke (DBAN) Darik Horn GNU General Public License: OS independent, based on Linux: No external [3]? dd ...

5. What does "free up disk space" mean — and how do you fix it?

   www.aol.com/lifestyle/does-free-disk-space-mean...

   Beyond that, here are four totally doable ways to free up disk space on your computer, so you can go back to business (and browsing and shopping and streaming) as usual. Try System Mechanic for 30 ...

6. Disk formatting - Wikipedia

   en.wikipedia.org/wiki/Disk_formatting

   Formatting a disk for use by an operating system and its applications typically involves three different processes. [e]Low-level formatting (i.e., closest to the hardware) marks the surfaces of the disks with markers indicating the start of a recording block (typically today called sector markers) and other information like block CRC to be used later, in normal operations, by the disk ...

7. Apple Partition Map - Wikipedia

   en.wikipedia.org/wiki/Apple_Partition_Map

   This identifier masks free space as a partition map entry. Apple_FWDriver: FireWire device driver: Macintosh: Classic Mac OS drivers partition Apple_HFS: Hierarchical File System: Apple_HFS: While normally a HFS or HFS+ volume for Mac OS and Mac OS X, it can also contain an MS-DOS formatted file system (File Allocation Table, which can be ...

8. Data erasure - Wikipedia

   en.wikipedia.org/wiki/Data_erasure

   Data erasure (sometimes referred to as data clearing, data wiping, or data destruction) is a software-based method of data sanitization that aims to completely destroy all electronic data residing on a hard disk drive or other digital media by overwriting data onto all sectors of the device in an irreversible process. By overwriting the data on ...

9. Trim (computing) - Wikipedia

   en.wikipedia.org/wiki/Trim_(computing)

   Both hdparm and mdtrim find free blocks by allocating a large file on the filesystem and resolving what physical location it was assigned to. Regardless of operating system, the drive can detect when the computer writes all zeros to a block, and de-allocate (trim) that block instead of recording the block of zeros.