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March 5, 2026

LightRoom Classic : corrupted backup file on external disk (Mac OS Tahoe)

  • March 5, 2026
  • 0 replies
  • 21 views

When closing LightRoom Classic, this application creates a bakckup file. Sometimes, it does work ...

Two cases

1) backup stored on internal disk (APFS format) : OK

The zip file contains 2 elements :

  • the catalog, a file named Photos 2022 et +.lrcat,

  • a folder Photos 2022 et +. lrcat-data

2) backup stored on an external disk ‘SSD disk as Sandisk Extrem Pro or hard disk as La Cie USB 3) (ExFAT format) : WRONG

The zip file contains 4 elements :

  • a catalog file named Photos 2022 et +.lrcat,

  • a folder Photos 2022 et +. lrcat-data

  • 2 additional fles (temp files) Photos 2022 et +.lrcat-shm et Photos 2022 et +.lrcat-wal

 

At end of closure operation, catalog folder is correct :

  • a file named Photos 2022 et + Helper.lrdata,

  • a file named Photos 2022 et + Previews.lrdata,

  • a catalog file named Photos 2022 et +.lrcat,

  • a folder Photos 2022 et +. lrcat-data

 

Informations système

Nom du modèle : Mac mini

Puce : Apple M4  - Mémoire : 24 Go

 

Informations sur le logiciel LightRoom Classic

Version Lightroom Classic: 15.2 [ 202602111402-ec4112e8 ]

Licence: Creative Cloud - Paramètre de langue: fr-FR

Système d'exploitation : Mac OS 26

Version : 26.3.0 [25D125]

Architecture de l'application : arm64

Version SQLite: 3.36.0

Version Adobe GSDK: 1.4.0.171