CBS log file taking up free space on C drive
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CBS log file taking up free space on C drive


In Windows, the System File Check utility may generate multiple log files of 1 GB or more that can run down the free space on your hard drive. These System File Check log files are generated by repair operations, and are useful for reviewing corruptions to Windows system files. If you need to free up space, you can safely delete these files. Look for them at C:\Windows\Logs\CBS.

CBS stands for Compression Based Servicing.

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