Grub returns File not found when booting on a new disk with Debian Jessie

I installed Debian Jessie on a new hard disk, and wanted to boot from this new disk. At the end of Debian setup, I choosed setup Grub also. But when booting, Grub falls into rescue mode with a File not found error. I tried several guides I found around to try to have it up again, with no success. Here is my configuration (I booted on a live Knoppix distro) knoppix@Microknoppix:~$ lsblk -f NAME FSTYPE LABEL MOUNTPOINT sda └─sda1 ext4 sdb ├─sdb1 ext4 ├─sdb2 └─sdb5 swap sdc └─sdc1 ntfs Stock sdd ├─sdd1 ext4 Debian ├─sdd2 └─sdd5 swap sdh └─sdh1 ntfs My Passport sr0 iso9660 KNOPPIX /mnt-system sr1 udf WD SmartWare zram0 swap [SWAP] cloop0 iso9660 KNOPPIX_FS /KNOPPIX blkid /dev/cloop0: LABEL="KNOPPIX_FS" TYPE="iso9660" /dev/zram0: UUID="770d53d4-32d4-4810-988a-ffb80edecc8f" TYPE="swap" /dev/sda1: UUID="2a0bdecf-9074-40de-8d23-bcaf01af17bb" TYPE="ext4" /dev/sdb1: UUID="a4eaeb3b-27d1-4285-a364-fcdfa601fb82" TYPE="ext4" /dev/sdb5: UUID="76381585-358a-46a1-bc16-feb51b08fe90" TYPE="swap" /dev/sdc1: LABEL="Stock" UUID="A2904C19904BF1F9" TYPE="ntfs" /dev/sdd1: LABEL="Debian" UUID="c45c0acc-f414-4c3e-a4ba-b3c1a33c3cbd" TYPE="ext4" /dev/sdd5: UUID="2f0c8892-f4a8-4312-bc19-1e8d72f23e6c" TYPE="swap" /dev/sr0: LABEL="KNOPPIX" TYPE="iso9660" /dev/sdh1: LABEL="My Passport" UUID="325220A852207331" TYPE="ntfs" /dev/sr1: LABEL="WD SmartWare" TYPE="udf" parted (parted) print all Model: ATA Maxtor 7V250F0 (scsi) Disk /dev/sda: 251GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 251GB 251GB primary ext4 boot Model: ATA Maxtor 7V300F0 (scsi) Disk /dev/sdb: 300GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 284GB 284GB primary ext4 2 284GB 300GB 16.1GB extended 5 284GB 300GB 16.1GB logical linux-swap(v1) ... The grub.cfg file contains thism which looks correct ### BEGIN /etc/grub.d/10_linux ### function gfxmode { set gfxpayload="${1}" } set linux_gfx_mode= export linux_gfx_mode menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-2a0bdecf-9074-40de-8d23-bcaf01af17bb' { load_video insmod gzio if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi insmod part_msdos insmod ext2 set root='hd0,msdos1' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1 2a0bdecf-9074-40de-8d23-bcaf01af17bb else search --no-floppy --fs-uuid --set=root 2a0bdecf-9074-40de-8d23-bcaf01af17bb fi echo 'Loading Linux 3.16.0-4-amd64 ...' linux /boot/vmlinuz-3.16.0-4-amd64 root=UUID=2a0bdecf-9074-40de-8d23-bcaf01af17bb ro quiet echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-3.16.0-4-amd64 } Note that the .mod files are in a seperate directory /boot/grub/i386-pc Is it usual? Thank you for helping me understand what is wrong and how to solve this?