Fedora Installation :: Partition Does Not Start On Physical Sector Boundary?

Aug 22, 2011

fdisk -l: Disk /dev/sda: 750.2 GB, 750156374016 bytes.

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I've tried other installations, but I always get errors like this. /dev/sda 5, 7 and 8 are occupied by PCLinuxOs. /dev/sda 9, 10, 11 and 12 by Fedora. I made room for Linux installations by GParted (last version). Really, I made no errors. The installer of PCLOS is a bit strange: it changed the NTFS partition sda5 in sda 6! In a previous installation with Fedora and Kubuntu only the extend partition sda 4 complained about not starting on physical sector boundary. The hard disk is Western Digital with Advanced Format. Probably this is the cause of the problem. The systems are snappy and responsive. I do not encounter any problem. What to do? Ignoring the problem or reinstalling? May be it would be better to get rid of PCLOS and to dual boot Windows with Fedora?

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I need a way to get Kickstart to start on a on a specific sector. For example you can do this using parted

parted /dev/sda
(parted) mklabel gpt
(parted) unit s
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This will start a partition on sector 40. How can I do this with a kickstart file?

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Looking up the net I see two conflicting views on this:

1. Forget it -- cylinders are not relevant on today's disks

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Feb 11, 2010

I've been searching for a definitive answer/solution for this. Below are outputs from fdisk -l and a partition table listing from expert mode in fdisk. [root@ncc1701 ~]# fdisk -l /dev/sda

Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000265ce

Device Boot Start End Blocks Id System
/dev/sda1 * 1 39 307200 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 39 60801 488076288 83 Linux

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Some posts that I've come across indicate no problem while others indicate that it is an issue and needs to be corrected. sda1 is my /boot partition ~ 300MB and then sda2 is a LUKS volume with a LVM VG occupying the rest of the available 500GB hdd. It is my active F 12 system with no dual boot.

1. Is it a problem? 2.Can I just resize sda1 so the end does not overlap sda2? 3. And can I do this while booted from that system or do I need to do it from a LiveCD?

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Nov 12, 2010

i was looking at the list of my /dev/sda partition and on the first partition it says that it does not end on cylinder boundary. does is it need to be fixed? on a book that im reading it says that when you create a partition the end cylinder should be the size of the partition...

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General :: Partition Does Not End On Cylinder Boundary - Can't Boot Ubuntu?

Mar 3, 2011

I have a 500g hard drive using dual boot win7 and ubuntu 10.04.2. The system is boot from MBR using Grub1.98. The partitioned as the follows:

system reserve100m |win7,42g|software 100g|empty 100g|extended 253g
logic partition is as follows:
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Since I want to make use of the "empty" part. I delete it and the "software" partition under win7. Then I create a new partition on the part.
After I reboot my pc, the screen shows:
>> operating system no such partition.

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how to resize my partition table so I can KEEP MY DATA on the ubuntu / partition. Or someway I can get my ubuntu / partition back.

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Ubuntu Installation :: Accidentally Deleted Partition Table On Lvm Physical Volume.

Jul 18, 2010

I was trying to remove the physical volume from an old drive. So I opened gparted and told it to rewrite the partition table. The only problem is I targeted the wrong volume, I wiped the partition table on my 4tb raid5 array This 4tb array has everything! All my movies, tv shows, music. The only things I have backup up off site are my smaller files like documents. I was about to lose my whole media collection.

I did some research and found a solution that I will post here in the hopes that someone will google "I deleted the partition table on my lvm" and be find the solution.You should find in your filesystem a /etc/lvm/backup folder. LVM puts a copy of the crucial lvm information there every time you change the the volume group.

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pvcreate --uuid cLrY02-zrVi-D0Vi-cIPB-6fF5-ed0c-XFF0os /dev/md0

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vgcfgrestore --file /etc/lvm/backup/raid5 raid5

This tells it to recreate the volume group using the information in the backup file. The backup files looks for the uuid of the PV, which now matches the correct volume. The coordinates in the backup file match up to the data on the array an suddenly everything is back!

When I deleted my LVM partition table I did not damage any of the actual volumes on the volume group, I just wiped out the table of contents. The backup file had the information needed to rewrite this table of contents.

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While trying to get Grub working on my computer, I accidentially overwrote the partition table. Luckily I did a fdisk -l and copied the information before I did anything. The problem is that the first partition "does not end on cylinder boundary" so when I recreated the partition info using fdisk, partition 2 doesn't start in the right place and cannot be read. I have some pretty valuable data on there and I can't afford to lose it. Is there a way to create a partition that doesn't start on a cylinder boundary?

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best way to do this (e.g. get one large 8 GiB partition with my old image on it)? I still have the original untouched 4 GiB card and also have an external CF drive if I need to redo the cloning. I've also used Clonezilla before, so perhaps there's a way to do this that allow me to grow the image as it's being cloned.

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Code:

# MAKING PATITION:
set `losetup -f`; dev=$1
`losetup $dev $out`
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,,$fsys
EOF

However after formatting this single partition in FAT16 I can see the drive in my emulated Windows311, but not use it. It says that the drive cannot be accessed. When I do the same thing interactively with fdisk it all works. When inspecting the partitions in both cases via "fdisk -ul" I see that whenever sfdisk is used to create the partition it is created starting from the 1 sector. Whenever fdisk is used it is created from 63 sector (which is correct of course). How can I make my sfdisk start the partition not from the 1st sector, but also from the 63 so that OS wouldn't have problem with that?

I tried like this:

Code:

sfdisk -uS $dev << EOF
63,,$fsys
EOF

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Code:
sd 2:0:0:0: [sdb] Attached SCSI disk
sd 2:0:0:0: Attached scsi generic sg2 type 0
sd 2:0:0:0: [sdb] Unhandled sense code
sd 2:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK
sd 2:0:0:0: [sdb] Sense Key : Medium Error [current]
sd 2:0:0:0: [sdb] Add. Sense: Unrecovered read error

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1.- What exactly is in this first sectors (ext3 metadata?)

2.- Is there some way to fix this quickly, maybe with some "sectors relocation", Or re-create the first logical sectors.

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Jun 7, 2010

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Code:
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Code:

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