Thank you for your help!
Fixed with a manual fscheck; system updated to 18.04.20 successfully and seems to be stable.
I'll keep an eye on the sdcard, but for now everything looks fine.
Thread can be closed, have a nice evening everyone!

@Substring Aie!!! elle es neuve :S :S

@erebos @Substring le plus simple pour discuter de tout ça, ça serait de vous caler un petit rendez-vous sur le chat (irc)

@Erebos Pour y aller tu as le lien en haut du forum, après il y a d'autres moyens mais c'est le plus simple au début ;)

Sujet réglé....j'ai éteint le raspeberry par l'alim et au redémarrage tout va bien ça fonctionne nickel.

Hi!
Upgraded from 18.03.30 to 18.04.20 on Odroid C2, also did a fresh install but both has the sega 32X disappeared on the menu (and yes, i do have the romsinstalled on the correct folder), it's also not there on the core selection menu of the emulators.
In fact, the folder is not event there on the install (i still have it because i have my roms stored on an external hdd.
Can we hope to have this patched for the next release? The mega CD is also broken with the pre-installed core, have to manually swap it to genesisplusgx to fix the problem and be able to launch a game...
It would be also great to have the psx and n64 fixed, the lakka cores for those work like a charm on the C2 (you can see the video i created for another topic here:
https://youtu.be/hKv1HhCOmYI ). Like i say in this topic (https://forum.recalbox.com/topic/13595/odroid-c2-psx-stuttering-choppy-and-sega-cd-iso-issue/31 ) the cores used on lakka are perfect on the C2, here's the info on them:
*PS1 Core PCSX ReARMed
Authors PCSX Team, notaz, Exophase
Permissions Dynarec
License GPLv2
Supported extensions bin, cue, img, mdf, pbp, toc, cbn, m3u
Firmwares
scph5500.bin (md5) 8dd7d5296a650fac7319bce665a6a53c
scph5501.bin (md5) 490f666e1afb15b7362b406ed1cea246
scph5502.bin (md5) 32736f17079d0b2b7024407c39bd3050

*Sega 32X core PicoDrive
system name Sega 8/16-bit + 32X (Various)
Authors notaz, fdave
Permissions dynared_optional
License MAME
Supported extensions bin, gen smd, md, 32x, cue, iso, sms, 68k
Firmwares
bios_CD_U.bin (md5) 2efd74e3232ff260e371b99f84024f7f
bios_CD_E.bin (md5) e66fa1dc5820d254611fdcdba0662372
bios_CD_J.bin (md5) 278a9397d192149e84e820ac621a8edd

*Core name Mupen64Plus OpenGL
Core label Nintendo 64 (Mupen64Plus)
System name Nintendo 64
Authors Hacktarux, Mupen64Plus Team
Permissions dynared_optional
License GPLv2
Supported extensions n64, v64, z64, bin, u1, ndd

Do you think it would be possible to have them on Recalbox? Substring said that he's quite close to lakka's developpers... Picodrive would work like a charm for the 32x games. What's strange is that recalbox also use PCSX ReARMed, maybe it's a compilation problem... I remember Lakka having the same problem on PSX with the core at launch, but it has been long fixed since then.
Thanks guys!

PS: I'll soon post a video of how it runs on the C2 actually, it's really choppy like regalia said, so you can see for yourself.
Hope to see

Apparemment tout est rentré dans l'ordre. Un reboot et tout fonctionne.

Merci encore

@bill57 si tu transfère via le Web manager, c'est une limitation voulue, car le transfert via cette interface est trop instable pour les gros fichiers.

@necrobot20xx scraping is contained in gamelist.xml, so if you don't have them (and the related images in downloaded_images directory), scraping is lost, plain and simple.

if you don't have them anymore and no way to get them back, you have to rescrape everything, there is absolutely no alternative.

Hi! And you can learn more about updates. Earlier though the button was for checking.

From the written did not understand anything: ( also commands to enter somewhere...

@acris ho visto che però non funziona su tutyi i giochi. Ci sono ancora bugs. Grazie ancora lo stesso!

re apres de moult recherche je pense avoir mis le doigt sur le problème javais un soucis dans mon fichier recalbox.conf (caractere : nulnulnulnulnulnulnulnul) toute la premiere ligne etait pour moi corrompu qui portant était clean le soucis a l'air d'etre régler le redémarrage fonctionne et depuis je nais plus de freeze sujet a mon humble avis clos !!!!!

Personne n'a une idée ?

Est-ce qu'il y a des fichiers de config que je pourrait supprimer pour repartir à zer (même si comme je l'ai dis, j'ai tout laissé par défaut) ? Supprimer le scrap aussi (aucune idée d'où sont les fichiers) ?