To upgrade Analytics 2.5.9 or 2.5.8 with data present in internal disk to Analytics 2.5.10
Prepare the Analytics to add external disk. Refer Preparing the Analytics to Add External Disk.
Add external disk. Refer to Adding External Disk.
Migrate the data from internal to external disk. Refer to Migrating the Data To External Disk.
Unmount the hard disk from older Analytics. Refer to Unmounting the Hard Disk from older Analytics Version.
Mount it on the Analytics 2.5.10. Refer to Mounting the Hard Disk on new Analytics.