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This issue has been reproduced and the engineering team is working on a fix. For now go back to the earlier BIOS. Thank you for all the information.
I'm going to have 1 last go at clearing all partition, and installing just LLIf this fails, I will get my friend to RMA/Swap the drive.
The question is then,Go for the "AHCI" version of this drive, or just a standard M.2 SATA SSD
sudo grub-install boot-directory=/mnt/boot /dev/sda
sudo grub-install --boot-directory=/mnt/boot /dev/sda
"error attempting to Read/Write outside of disk" "HD1"
"error attempting to Read/Write outside of disk" "HD0"
it@it:~$ sudo mount /dev/nvme0n1p3 /mntit@it:~$ sudo grub-install boot-directory=/mnt/boot /dev/sdagrub-install: error: More than one install device?.it@it:~$
sudo update-grub
it@it:~$ ls -l /dev/nvme*n1brw-rw---- 1 root disk 259, 0 Nov 24 06:47 /dev/nvme0n1it@it:~$ ls -l /dev/nvme*crw------- 1 root root 10, 57 Nov 24 06:47 /dev/nvme0brw-rw---- 1 root disk 259, 0 Nov 24 06:47 /dev/nvme0n1brw-rw---- 1 root disk 259, 1 Nov 24 06:47 /dev/nvme0n1p1brw-rw---- 1 root disk 259, 2 Nov 24 06:47 /dev/nvme0n1p2brw-rw---- 1 root disk 259, 3 Nov 24 06:47 /dev/nvme0n1p3brw-rw---- 1 root disk 259, 4 Nov 24 06:47 /dev/nvme0n1p4brw-rw---- 1 root disk 259, 5 Nov 24 06:47 /dev/nvme0n1p5
sudo mount /dev/nvme0n1p3 /mntsudo grub-install boot-directory=/mnt/boot /dev/sdasudo umount /mnt
03:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd Device a802 (rev 01)it@it:~$ lsblkNAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTsda 8:0 0 931.5G 0 disk ├─sda1 8:1 0 50G 0 part ├─sda2 8:2 0 20G 0 part ├─sda3 8:3 0 20G 0 part ├─sda4 8:4 0 1K 0 part └─sda5 8:5 0 820G 0 part sdb 8:16 1 7.5G 0 disk └─sdb1 8:17 1 7.5G 0 part /cdromloop0 7:0 0 747.6M 1 loop /rofsnvme0n1 259:0 0 119.2G 0 disk ├─nvme0n1p1 259:1 0 50G 0 part ├─nvme0n1p2 259:2 0 20G 0 part ├─nvme0n1p3 259:3 0 20G 0 part ├─nvme0n1p4 259:4 0 1K 0 part └─nvme0n1p5 259:5 0 17G 0 part it@it:~$
it@it:~$ modinfo nvmefilename: /lib/modules/3.13.0-62-generic/kernel/drivers/block/nvme.koversion: 0.8license: GPLauthor: Matthew Wilcox <[email protected]>srcversion: 56D1A65BFAFAC90F460C031alias: pci:v*d*sv*sd*bc01sc08i02*depends: intree: Yvermagic: 3.13.0-62-generic SMP mod_unload modversions signer: Magrathea: Glacier signing keysig_key: E0:7C:FC:BE:E8:34:59:BA:45:54:3D:39:B2:C2:A5:78:75:74:50:01sig_hashalgo: sha512parm: shutdown_timeout:timeout in seconds for controller shutdown (byte)parm: nvme_major:intparm: use_threaded_interrupts:intit@it:~$
it@it:~$ lsmod | grep nvmnvme 58970 0 it@it:~$
$ ll /dev/nvme*n1>> command not found
it@it:~$ sudo hdparm -tT --direct /dev/nvme0n1/dev/nvme0n1: Timing O_DIRECT cached reads: 2118 MB in 2.00 seconds = 1058.31 MB/sec Timing O_DIRECT disk reads: 3736 MB in 3.00 seconds = 1244.85 MB/secit@it:~$
So if I understand correctly the grub.conf is pointing by UUID to the partition /dev/nvme0n1p3The thread firenice03 and myself found seem to imply that pointing directly to the root boot device,where the grub is /dev/nvme0n1 instead of the UUID for the LL partition is, may solve it..??
Having exhausted all my options, a final google led me to this: NVM Express Disk DriverIt's in a Ubuntu 14.04 Man page, but seems to be linked to BSD.Not sure if it's valid, or usable..??I have absolutely no idea how to compile a kernel But there is also a "load the driver as module at boot time",, however,I don't seem to be able to find the loader.conf file , should I have one..??or is there another way to do this with LL..??any advice greatly received
sudo mount /dev/nvme0n1p3 /mntfor i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt$i; done
sudo chroot /mnt
nano /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nvme_load=YES nvd_load=YES"
update-grub
exit
for i in /sys /proc /dev/pts /dev; do sudo umount /mnt$i; donesudo umount /mnt