Just installed, can't boot

[debianoob]

I just installed debian on my PC, but it doesnt boot. I had a windows previously installed on SDD and i installed my debian on HDD cause i wanna keep my SSD only for windows. I made 3 disks "/" "/boot" "/home" when i was gonna finish install it said "We detected a windows .... Woud you like to install GRUB on first hard disk" I pressed no and select my "/boot" folder. when i lauch PC it starts with Windows, doesnt even see boot. Then go to BIOS and disable SSD and it said "Put a media boot device or CD and restart"

I boot from LIVE usb and type lsblk - here is it

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NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 931.5G  0 disk 
├─sda1   8:1    0 489.1G  0 part 
├─sda2   8:2    0     1K  0 part 
├─sda5   8:5    0  18.6G  0 part 
├─sda6   8:6    0    94M  0 part 
└─sda7   8:7    0 139.7G  0 part 
sdb      8:16   0 232.9G  0 disk 
├─sdb1   8:17   0   100M  0 part 
└─sdb2   8:18   0 232.8G  0 part 
sdc      8:32   1   7.5G  0 disk 
└─sdc4   8:36   1   7.5G  0 part /lib/live/mount/medium
loop0    7:0    0 836.9M  1 loop /lib/live/mount/rootfs/filesystem.squashfs

sdc is a live flash. sda - HDD, sdb - SSD
Coud you help me please ?

[kiyop]

when i was gonna finish install it said "We detected a windows .... Woud you like to install GRUB on first hard disk" I pressed no and select my "/boot" folder.

You should have selected the HDD (such as /dev/sda) instead of "/boot" PARTITION (such as /dev/sda6).

when i lauch PC it starts with Windows, doesnt even see boot.

It seems to be VERY natural.

Then go to BIOS and disable SSD and it said "Put a media boot device or CD and restart"

It seems to be VERY natural.

Does your PC boot with UEFI?

Boot with Super Grub2 Disk.
http://www.supergrubdisk.org/super-grub2-disk/

Or wait for answer from Head_on_a_Stick.

[Head_on_a_Stick]

For a non-UEFI system, I think re-installing GRUB to the MBR of the disk and configuring the bootloader should fix things.

This guide is quite old but it should still work:

http://crunchbang.org/forums/viewtopic.php?id=15351

If you do not know if your machine is UEFI or not then post the full output of:

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# parted -l

[debianoob]

I tried to do what type there, but then i get error when i typed grub-install

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Installing for i386-pc platform.
grub-install: warning: this LDM has no Embedding Partition; embedding won't be possible.
grub-install: error: embedding is not possible, but this is required for RAID and LVM install.

then i google and tried this. but it didn't help

parted -l

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Model: ATA ST1000VX000-1ES1 (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/4096B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size    Type     File system  Flags
 1      32.3kB  545GB   545GB   primary
 2      545GB   545GB   98.6MB  primary  ext2
 3      545GB   1000GB  455GB   primary


Model: ATA Samsung SSD 850 (scsi)
Disk /dev/sdb: 250GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End    Size   Type     File system  Flags
 1      1049kB  106MB  105MB  primary  ntfs         boot
 2      106MB   250GB  250GB  primary  ntfs


Model: JetFlash Transcend 8GB (scsi)
Disk /dev/sdc: 8056MB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start  End     Size    Type     File system  Flags
 4      131kB  8056MB  8056MB  primary  fat32        boot

[bw123]

Sector size (logical/physical): 512B/4096B

Number Start End Size Type File system Flags
1 32.3kB

Peculiar, maybe you should try your install again and repartition this device correctly?

[Head_on_a_Stick]

i typed grub-install

Please post the exact, full command that you used.

Also, that `parted` output is not consistent with the `lsblk` output that you posted originally and they do not appear to be describing the same devices -- can you explain this?