Re: boot fails on jessie on Acer Travelmate

[Pascal Hambourg <pascal@plouf.fr.eu.org>]

Pierre Couderc a écrit :
> One big difference is that after jessie installation boot flag has 
> disappeared : gpt :
> 
> wheezy :
> 
> Model: ATA Crucial_CT480M50 (scsi)
> Disk /dev/sda: 480GB
> Sector size (logical/physical): 512B/4096B
> Partition Table: gpt
> 
> Number  Start   End    Size    File system     Name  Flags
>   1      1049kB  512MB  511MB   fat32                 boot
>   2      512MB   467GB  467GB   ext4
>   3      467GB   480GB  12.8GB  linux-swap(v1)
> 
> jessie :
> 
> Model: ATA Crucial_CT480M50 (scsi)
> Disk /dev/sda: 480GB
> Sector size (logical/physical): 512B/4096B
> Partition Table: gpt
> 
> Number  Start   End    Size    File system     Name  Flags
>   1      1049kB  538MB  537MB   fat32
>   2      538MB   467GB  467GB   ext4
>   3      467GB   480GB  12.8GB  linux-swap(v1)

In parted on a GPT disk, the "boot" flag identifies an EFI system
partition. An alias is "esp". As Simon suggested, you can toggle the
flag (with parted, not fdisk) and check whether the system can boot again.

parted /dev/sda set 1 boot on