Hello!
I need to write partitioning script wich would work in rescue mode. It will prepare partitions and unpack linux on it. However I need to calculate whole size of the disk and create:
/dev/sda1 --> One big partition (minus (2*size of memory) for swap)
/dev/sda2 --> Swap partition... (1 Reply)
Hi all,
I am running xen virtual machine on centos 5 and xen gust o.s is centos.
I cannot boot my xen vm machine it saying cannot find /bin/sh to execute.
I want to go to rescue mode of my xen vm machine.
I know how to do on actual physical machine but how i can enter in rescue mode of... (1 Reply)
Hi All,
I used to have my suse linux(VM) server in graphic mode but not anymore since morning. I cant rolback since i loose somuch work. Any idea how to it back to normal. Thanks (6 Replies)
Hi all,
I am running xen virtual machine on centos 5 and xen gust o.s is centos.
I cannot boot my xen vm machine it saying cannot find /bin/sh to execute.
I want to go to rescue mode of my xen vm machine.
I know how to do on actual physical machine but how i can enter in rescue mode of... (6 Replies)
Hi,
I'm trying to resize an ext3 FS (filesystem) under an LVM.
I have booted the OS (RHEL 4) in rescue mode using the CD media and I'm able to use lvm commands.
Now, I'm trying to shrink the filesystem before actually shrinking the logical volume but I cannot find ext2onlone or resize2fs... (1 Reply)
How to get cpanel backup data in rescue mode?
Server OS 6.3 minimal with cPanel
/dev/sdb1 is main partition
root@rescue ~ # fdisk -l
Anyone can help
Thank you (0 Replies)
Hello All,
I have a Red Hat Linux 5.9 Server installed with one hard disk & 2 Partitions created on it as follows,
/boot - Linux Partition & another is
LVM - One VG & under that 5-6 Logical volumes(var,opt,home etc).
Here my requirement is to take out 1GB of space from LVM ( Any logical... (5 Replies)
Hello,
I am running ubuntu 14.04
My server has problems again. I need to manage system files in rescue mode, backup some files, edit /etc/crontab and rc.local files etc.
root@rescue:~# cat /proc/mdstat
Personalities :
md2 : active raid1 sda2 sdb2
4193216 blocks
md3 :... (4 Replies)
Discussion started by: baris35
4 Replies
LEARN ABOUT FREEBSD
zfsboot
ZFSBOOT(8) BSD System Manager's Manual ZFSBOOT(8)NAME
zfsboot -- bootcode for ZFS on BIOS-based computers
DESCRIPTION
zfsboot is used on BIOS-based computers to boot from a filesystem in a ZFS pool. zfsboot is installed in two parts on a disk or a partition
used by a ZFS pool. The first part, a single-sector starter boot block, is installed at the beginning of the disk or partition. The second
part, a main boot block, is installed at a special offset within the disk or partition. Both areas are reserved by the ZFS on-disk specifi-
cation for boot use. If zfsboot is installed in a partition, then that partition should be made bootable using appropriate configuration and
boot blocks described in boot(8).
BOOTING
The zfsboot boot process is very similar to that of gptzfsboot(8). One significant difference is that zfsboot does not currently support the
GPT partitioning scheme. Thus only whole disks and MBR partitions, traditionally referred to as slices, are probed for ZFS disk labels. See
the BUGS section in gptzfsboot(8) for some limitations of the MBR scheme support.
USAGE
zfsboot supports all the same prompt and configuration file arguments as gptzfsboot(8).
FILES
/boot/zfsboot boot code binary
/boot.config parameters for the boot block (optional)
/boot/config alternative parameters for the boot block (optional)
EXAMPLES
zfsboot is typically installed using dd(1). To install zfsboot on the ada0 drive:
dd if=/boot/zfsboot of=/dev/ada0 count=1
dd if=/boot/zfsboot of=/dev/ada0 iseek=1 oseek=1024
If the drive is currently in use, the GEOM safety will prevent writes and must be disabled before running the above commands:
sysctl kern.geom.debugflags=0x10
zfsboot can also be installed in an MBR slice:
gpart create -s mbr ada0
gpart add -t freebsd ada0
gpart create -s BSD ada0s1
gpart bootcode -b /boot/boot0 ada0
gpart set -a active -i 1 ada0
dd if=/boot/zfsboot of=/dev/ada0s1 count=1
dd if=/boot/zfsboot of=/dev/ada0s1 iseek=1 oseek=1024
Note that commands to create and populate a pool are not shown in the example above.
SEE ALSO dd(1), boot.config(5), boot(8), gptzfsboot(8), loader(8), zfsloader(8), zpool(8)HISTORY
zfsboot appeared in FreeBSD 7.3.
AUTHORS
This manual page was written by Andriy Gapon <avg@FreeBSD.org>.
BUGS
Installing zfsboot with dd(1) is a hack. ZFS needs a command to properly install zfsboot onto a ZFS-controlled disk or partition.
BSD September 15, 2014 BSD