https://community.sony.rs/t5/camcorders/hvr-mrc1-recording-unit-error-message/m-p/3980758#M6912 <P>I use this card reader with my Z7U and Z5U.&nbsp; It worked fine with 7 different CF cards.&nbsp; Now the reader says format error with all of my cards.&nbsp; But I borrowed a friend's cards and they work fine.&nbsp; Also my CF cards do not work on his recording unit.&nbsp; How can I reformat these cards?&nbsp; My comp</P> Thu, 31 Jul 2025 14:44:09 GMT jenniferrodes 2025-07-31T14:44:09Z https://community.sony.rs/t5/camcorders/hvr-mrc1-recording-unit-error-message/m-p/3980758#M6912 <P>I use this card reader with my Z7U and Z5U.&nbsp; It worked fine with 7 different CF cards.&nbsp; Now the reader says format error with all of my cards.&nbsp; But I borrowed a friend's cards and they work fine.&nbsp; Also my CF cards do not work on his recording unit.&nbsp; How can I reformat these cards?&nbsp; My comp</P> Thu, 31 Jul 2025 14:44:09 GMT https://community.sony.rs/t5/camcorders/hvr-mrc1-recording-unit-error-message/m-p/3980758#M6912 jenniferrodes 2025-07-31T14:44:09Z