# macOS 15.2 Sequoia Backup Issues: An In-Depth Summary
In the realm of technology, software upgrades can often be a double-edged blade. While they may bring forth new enhancements and functionalities, they can also unintentionally lead to complications that disrupt users’ everyday activities. This has been true for macOS 15.2 Sequoia, which has been noted to have several backup issues affecting Apple’s Time Machine tool as well as third-party software such as SuperDuper and Carbon Copy Cloner. Fortunately, an update released by Apple in macOS 15.3 has resolved these concerns, but it’s vital to comprehend what went awry and how it impacted users.
## The Source of the Issue: SuperDuper
SuperDuper, a well-known backup tool created by Shirt Pocket, has consistently been a dependable resource for generating bootable backups of Mac drives. However, after the launch of macOS 15.2, users found themselves facing difficulties in creating these backups. The Shirt Pocket team promptly examined the situation and identified that the root cause was within Apple’s own replication code, which manages the backup process.
As per Dave Nanian, the creator of SuperDuper, the issue emerges at the end of the backup process, especially when the system tries to duplicate the Preboot or Recovery volumes. Users faced a “Resource Busy” error, which could previously be circumvented by keeping the system active. Unfortunately, this time, the bug made the workaround ineffective, resulting in total backup failures.
> “Apple broke the replicator,” Nanian mentioned in a blog entry. “This is their code, and we have to depend on it to copy the OS; OS copying won’t function until they remedy it.”
## Broader Consequences: Time Machine and Carbon Copy Cloner
The backup difficulties were not exclusive to SuperDuper. Users of Carbon Copy Cloner, another favored backup application, reported analogous issues. Although Carbon Copy Cloner generally facilitates bootable backups, users indicated that even non-bootable Time Machine backups were failing. In some instances, users faced the loss of entire backup histories, sparking worries regarding data integrity and reliability.
The challenges seemed particularly severe on Apple Silicon Macs, which might have amplified the intensity of the issues. As users flocked to forums and social media platforms to relate their experiences, it became evident that the backup bugs were extensive and impacted a considerable number of users.
## Apple’s Action and Resolution
In reaction to the mounting complaints from users and developers, Apple rolled out macOS 15.3, which reportedly resolved the backup challenges that plagued macOS 15.2. Developer Dave Nanian verified the fix in a recent announcement, bringing significant relief to users who had struggled with backup failures.
> “Apple has rectified the problem in macOS 15.3,” Nanian stated, indicating a return to normalcy for many users who depend on these backup tools for data security.
## Conclusion
The backup issues that arose in macOS 15.2 Sequoia highlight the intricacies inherent in software development and the possible downsides of updates. While Apple’s prompt action in releasing macOS 15.3 has eased many worries, the situation emphasizes the necessity of comprehensive testing and effective communication between software engineers and users.
For individuals who depend on backup tools such as Time Machine, SuperDuper, and Carbon Copy Cloner, it’s important to stay updated on software versions and potential complications. Regularly monitoring for updates and backing up data through various methods can alleviate risks associated with software bugs and ensure that your data remains protected and secure.
