CheckDisk Portable

“CheckDisk is a tool to search & repair disk errors, quite similar to ScanDisk or chkdsk.exe. You can select either standard or full test mode. The full test additionally performs a sector check. It is capable of finding bad sectors on your disk and marking them. The program works with hard disks (including SCSI and RAID) and removable media.” CheckDisk was created by Dirk Paehl (http://www.paehl.de/cms/checkdisk), and has been paired with a launcher that provides integration into the PortableApps.com Menu.
Note: Requires administrative privileges.

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