https://devzone.nordicsemi.com/f/nordic-q-a/42676/fds_err_no_pages-returned-when-fds_init-is-calledHello everyone! I have an application that is using FDS to save settings to flash. When fds_init() is called it returns the code FDS_ERR_NO_PAGES. My application does not use bootloader or SoftDevice. This is the sdk config definitions for the FDSen-USTelligent Community 13Fri, 18 Jan 2019 13:38:46 GMThttps://devzone.nordicsemi.com/thread/166492?ContentTypeID=1Fri, 18 Jan 2019 13:38:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:50612b09-e87f-438a-b99a-cba38e0e4374Vidar Berg<p>Hello,</p> <p>FDS/Fstorage will use the last pages of flash if no bootloader is present. Do you know if&nbsp;these flash pages actually are free (i.e. address 0x76000 - 0x80000)? If not you can do a memory dump with nrfjprog, etc and see if the pages are erased/contain&nbsp;<a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.2.0/lib_fds_format.html?cp=4_0_0_3_55_2_1#lib_fds_format_page">FDS page tags.</a></p> <p>&nbsp; &nbsp; nrfjprog --memrd 0x7C000 --n 0x4000 &gt; fds_section.txt</p> <p>Memory layout:&nbsp;</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-866a75110b064d499b55d2a0514e1a55/pastedimage1547817622681v1.png" alt=" " /></p> <p>Memory dump of FDS area after successful initialization:</p> <p><a href="https://devzone.nordicsemi.com/cfs-file/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-866a75110b064d499b55d2a0514e1a55/fds.txt">devzone.nordicsemi.com/.../fds.txt</a></p> <p></p> <p></p><div style="clear:both;"></div>