ufs:/dev/ada0s2a failed with error 19

Hello,
I installed FreeBSD 11.1 i386 on a notebook atom, I am in multi systems on this machine.
I added a partition before the FreeBSD partition on my hard drive, so I shifted one's boot.
When booting FreeBSD boot but stops with the following error message, where it asks me to mount the system partition of FreeBSD, it is in third position.
Code:
mountroot : waiting for device /dev/ada0s2a...
mounting from ufs:/dev/ada0s2a failed with error 19
loader variable:
___________
_______________
___________________
mountroot>

I would like to start my system and change the file /etc/fstab to index my new settings from my hard drive.
1 / how to mount my system to the prompt mountroot> ???
2 / how to file my /etc/fstab with the new parameters ???

Regards
philippe
 
Boot from the install media (CD, DVD, memstick) and use the shell. Then have a look with gpart show and post the output here. We need to have a clear idea of how your disks are currently set up.
 
hello SirDice, I tried the command gpart show, the latter works well! but how to redirect the output of gpart show to a file on my hard drive because I boot to an SD card that is in read only mode. I can unfortunately do ssh on a remote machine because the SD card is in read only mode. I am only the choice to write on my hard drive, it is composed as follows:
FreeBSD is /dev/sda3

Capture d’écran_2018-05-18_00-31-46.png

how can i mount the NTFS partition to write the output of gpart show?

Regards
Philippe
 
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