OpenIndiana multiboot with : LMDE4, Devuan and W10

Hi

Here is the situation :

1. Tried OpenIndiana liveDVD, I liked it.
2. Decided to install it on a free partition. Other partitions are occupied by W10, LMDE4, Devuan
3. Rebooted to try the new install. Worked great.
4. The other partitions weren't present on the boot menu
5. Decided to boot a LMDE4 LiveDVD so I can boot-repair. It went well, however, the OpenIndiana partition wasn't there
6. I tried to seek a solution over the Internet. I saw a Solaris 10 menu entry. I did not implement it because it could be different.

So here the fdisk -l result :

Code:root@linuxmintdebian:/home/joel# fdisk -l
Disk /dev/sda: 447,1 GiB, 480103981056 bytes, 937703088 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x5dd4086d

Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 1126399 1124352 549M 7 HPFS/NTFS/exFAT
/dev/sda2 1126400 526915111 525788712 250,7G 7 HPFS/NTFS/exFAT
/dev/sda3 526915584 528605183 1689600 825M 27 Hidden NTFS WinRE
/dev/sda4 528609278 937701375 409092098 195,1G 5 Extended
/dev/sda5 528609280 538427391 9818112 4,7G 82 Linux swap / Solaris
/dev/sda6 767168512 937701375 170532864 81,3G 83 Linux
/dev/sda7 651427840 767166463 115738624 55,2G 83 Linux
/dev/sda8 538427455 651427776 113000322 53,9G bf SolarisI'm not a progrmmer, or a linux geek. My talent is limited to terminal update and grub-update...

Thank you!