Originally Posted by
tea for one
Are both systems installed in UEFI mode (and hopefully with GPT)?
Both systems on one disk?
Yes both are installed in UEFI mode and with GPT. Both systems are on the same drive but on different partitions. They share a common data partition (see parted -l below)
Originally Posted by
yancek
If you have an EFI system, the most likely result will be putting windows to first boot priority in the BIOS so you would have to change that to put Ubuntu first so you can boot both from Grub. What you are describing is what happened with older Legacy boot systems where boot code was written to the MBR and overwrote what was there previously. Running the command: sudo parted -l will tell you if you have an EFI system as well as a GPT drive. Windows has required EFI installs since windows 8 on a GPT drive.
yes, confirmed:
Code:
Model: SKHynix_HFS001TD9TNI-L2B0B (nvme)
Disk /dev/nvme0n1: 1024GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 1049kB 106MB 105MB fat32 EFI system partition boot, esp
2 106MB 123MB 16,8MB Microsoft reserved partition msftres
3 123MB 209GB 209GB ntfs Basic data partition msftdata
4 209GB 210GB 542MB ntfs hidden, diag
5 210GB 1024GB 814GB ntfs msftdata
Model: WDC PC SN520 SDAPMUW-256G-1101 (nvme)
Disk /dev/nvme1n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
2 1049kB 1128MB 1127MB fat32 boot, esp
1 1128MB 256GB 255GB ext4
So you mean most likely I would simply need to change the boot order after the upgrade?
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