[gentoo-user] Will ZFS clobber my MBR?

[Chris Stankevitz]

Hello,

My / (root) lives on /dev/sdb1.  My /dev/sda has no partitions and no data
except for what I presume is the mbr written by lilo.  [history: sdb is an
SSD and I never wanted to use the slow sda]

I have been playing with ZFS on a USB drive and I am ready to create a
zpool on /dev/sda.

ZFS recommends that I give it the entire drive (partitioning discouraged).
 In this case I hesitate to give ZFS my entire drive as I worry ZFS will
clobber my MBR rendering my system unbootable.

Are my fears warranted?  If so, what should I do about it?  If you
recommend that I partition sda, what parameters do I used to avoid a
clobber?

Thank you,

Chris

Re: [gentoo-user] Will ZFS clobber my MBR?

[Michael Hampicke]

Am 22.01.2014 10:01, schrieb Chris Stankevitz:
 Hello,
 
 My / (root) lives on /dev/sdb1.  My /dev/sda has no partitions and no data
 except for what I presume is the mbr written by lilo.  [history: sdb is an
 SSD and I never wanted to use the slow sda]
 
 I have been playing with ZFS on a USB drive and I am ready to create a
 zpool on /dev/sda.
 
 ZFS recommends that I give it the entire drive (partitioning discouraged).
  In this case I hesitate to give ZFS my entire drive as I worry ZFS will
 clobber my MBR rendering my system unbootable.
 
 Are my fears warranted?  If so, what should I do about it?  If you
 recommend that I partition sda, what parameters do I used to avoid a
 clobber?
 

I don't know if creating a ZFS volume on /dev/sda kill break your mbr.
But why don't you install lilo on /dev/sdb ?
You change change the boot order in BIOS after that.




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