I accidentally deleted a file in sa0,but can not copy back,same to pd0.what is the problem?

I'm talking about third arg - permission. Which used for RO mode? Zero or one?

mounting os0 as RW will lead to bricks, so please, leave this one alone. doing bad things to vs0: can lead to a semi-brick but you can always recover with recovery menu (this on a PSTV, unknown if this works on PSVITA and PSVITA2000).
Issuer's note: This is why in the ps3 scene nobody ever mounted anything else other than dev_flash (vs0 to the ps3) and usb/hdd devices. You CAN mount the flash but it's a VERY BAD IDEA!

Thank you for your time :)

Hello,

It seems I am having trouble when I try to run the app after I built it.
As the title states, the app keeps getting constantly stuck at "Mounting partition 0x800 with RW permissions..." and doesn't seem to go any further, even when I retry the app another ~5 times.

Additionally, I would like to point out that I am building with the latest SDK, and built VitaRW with the full version of libSceVshBridge (the one that is ~160kb in size). Should I do something with the 'extra' folder that contains the extra.json and the 2kb version of libSceVshBridge?

And finally, I encounter these warnings every time I try to build:
arm-vita-eabi-gcc -Wl,-q -Wall -O3 -c -o main.o main.c main.c: In function 'main': main.c:33:3: warning: implicit declaration of function 'vshIoUmount' [-Wimplicit-function-declaration] vshIoUmount(i * 0x100, 0, 0, 0); // id, unk1, unk2, unk3 (flags ?) ^ main.c:36:3: warning: implicit declaration of function '_vshIoMount' [-Wimplicit-function-declaration] _vshIoMount(i * 0x100, 0, 2, buf); // id, unk, permission, work_buffer ^
Is this a normal thing to happen?

Apologies for opening an issue here, and thank you very much if you could help me out with building correctly.
-Voxel