1 |
On Wed, 20 May 2015 14:29:27 +0100, Mick wrote: |
2 |
|
3 |
> > > Thanks, does the 1mb partition have to have anything in it? |
4 |
> > |
5 |
> > No. If doesn't even need a filesystem, just create the partition with |
6 |
> > the correct type and GRUB will work. |
7 |
> |
8 |
> From what I recall gdisk just starts at sector 2048, doesn't this leave |
9 |
> space for MBR code? Note the message "MBR: protective" below: |
10 |
|
11 |
So does fdisk with an MBR partition table. It defaults to 2048 to avoid |
12 |
alignment problems with disks using 4k blocks. |
13 |
|
14 |
> # gdisk /dev/sda |
15 |
> GPT fdisk (gdisk) version 0.8.10 |
16 |
> |
17 |
> Partition table scan: |
18 |
> MBR: protective |
19 |
> BSD: not present |
20 |
> APM: not present |
21 |
> GPT: present |
22 |
> |
23 |
> Found valid GPT with protective MBR; using GPT. |
24 |
|
25 |
You still need the BIOS boot partition. This is about BIOS vs UEFI |
26 |
booting. |
27 |
|
28 |
% sudo gdisk -l /dev/sda |
29 |
GPT fdisk (gdisk) version 1.0.0 |
30 |
|
31 |
Partition table scan: |
32 |
MBR: protective |
33 |
BSD: not present |
34 |
APM: not present |
35 |
GPT: present |
36 |
|
37 |
Found valid GPT with protective MBR; using GPT. |
38 |
Disk /dev/sda: 5860533168 sectors, 2.7 TiB |
39 |
Logical sector size: 512 bytes |
40 |
Disk identifier (GUID): 04EFD165-FDDF-4C24-BA81-868B97BF9949 |
41 |
Partition table holds up to 128 entries |
42 |
First usable sector is 34, last usable sector is 5860533134 |
43 |
Partitions will be aligned on 2048-sector boundaries |
44 |
Total free space is 2014 sectors (1007.0 KiB) |
45 |
|
46 |
Number Start (sector) End (sector) Size Code Name |
47 |
1 2048 4095 1024.0 KiB EF02 BIOS boot partition |
48 |
2 4096 2101247 1024.0 MiB 8300 boot0 |
49 |
3 2101248 35655679 16.0 GiB 8200 swap0 |
50 |
4 35655680 5860533134 2.7 TiB 8300 silastic0 |
51 |
|
52 |
|
53 |
-- |
54 |
Neil Bothwick |
55 |
|
56 |
Top Oxymorons Number 2: Exact estimate |