Changes between Version 3 and Version 4 of TipAndDoc/boot

Timestamp:

Jul 21, 2011 11:34:57 PM (13 years ago)

Author:

mitty

Comment:

--

TipAndDoc/boot

@@ -13 +13 @@
   * initrd.gzに関しては中身は同じ
   * pxelinux.cfg等はパスが異なる
+
+ = GRUB2 =
+ == reduce grub entry ==
+ * WindowsとLinuxのマルチブート -> Windowsを消してシングルブート化
+
+ 1. 元の状態
+  * fdisk -lu /dev/sda
+{{{
+Disk /dev/sda: 120.0 GB, 120034123776 bytes
+255 heads, 63 sectors/track, 14593 cylinders, total 234441648 sectors
+Units = sectors of 1 * 512 = 512 bytes
+Sector size (logical/physical): 512 bytes / 512 bytes
+I/O size (minimum/optimal): 512 bytes / 512 bytes
+Disk identifier: 0x36ea3e05
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sda1              63      524351      262144+  82  Linux swap / Solaris
+Partition 1 does not end on cylinder boundary.
+/dev/sda2          524352    42467392    20971520+   7  HPFS/NTFS
+/dev/sda3        42467393   234441647    95987127+  83  Linux
+}}}
+  * OSのインストールは、Windows 7 -> Ubuntu 10.04の順
+  * grep menuentry /boot/grub/grub.cfg | tr \" \' | cut -d\' -f2
+{{{
+Ubuntu, with Linux 2.6.32-33-generic
+Ubuntu, with Linux 2.6.32-33-generic (recovery mode)
+Ubuntu, with Linux 2.6.32-32-generic
+Ubuntu, with Linux 2.6.32-32-generic (recovery mode)
+Ubuntu, with Linux 2.6.32-31-generic
+Ubuntu, with Linux 2.6.32-31-generic (recovery mode)
+Memory test (memtest86+)
+Memory test (memtest86+, serial console 115200)
+Windows 7 (loader) (on /dev/sda2)
+}}}
+ 1. NTFSパーティションの削除
+  * root@Microknoppix:~# fdisk /dev/sdb
+{{{
+
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sdb1               1          33      262144+  82  Linux swap / Solaris
+Partition 1 does not end on cylinder boundary.
+/dev/sdb2   *          33        2644    20971520+   7  HPFS/NTFS
+/dev/sdb3            2644       14594    95987127+  83  Linux
+
+Command (m for help): d
+Partition number (1-4): 2
+
+Command (m for help): d
+Partition number (1-4): 3
+
+Command (m for help): n
+Command action
+   e   extended
+   p   primary partition (1-4)
+p
+Partition number (1-4): 2
+First cylinder (33-14593, default 33):
+Using default value 33
+Last cylinder, +cylinders or +size{K,M,G} (33-14593, default 14593):
+Using default value 14593
+
+Command (m for help): w
+}}}
+{{{
+   Device Boot      Start         End      Blocks   Id  System
+/dev/sdb1              63      524351      262144+  82  Linux swap / Solaris
+Partition 1 does not end on cylinder boundary.
+/dev/sdb2          524352   234436544   116956096+  83  Linux
+}}}
+ 1. backupしておいたdisk imageからLinuxパーティションを書き戻し
+  * root@Microknoppix:~# dd if=/media/sda/bb.sda bs=512 skip=42467393 of=/dev/sdb2
+{{{
+191974255+0 records in
+191974255+0 records out
+98290818560 bytes (98 GB) copied, 3223.76 s, 30.5 MB/s
+}}}