Apple's latest macOS 15.2 Sequoia system update has introduced a critical bug that impacts the backup functionality of all devices, including Time Machine and third-party applications. The update has modified the Mac volume copy feature, forcing all backup software to use Apple's provided volume copy feature. However, the new feature is plagued by a severe bug that causes data volume copying to fail due to "resource busy" issues at the end of the process. This problem has a wide-reaching impact, including the inability of the Netgear Synology Active Business for Backup package to complete backups on macOS 15.2.
As of now, Apple has not released a fix or patch for this issue. Therefore, users are advised to exercise caution and vigilance when managing system backups.
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