|
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o*******d
发帖数: 989 | 3 前几天刚买个新laptop,，自己凑空折腾了一下，对电脑不是很懂，有个问题不明白，
我将过程描述一下。
电脑买来之后装了两个软件，一个是磁盘分区工具 , 另一个是系统备份工具。
先用分区工具将磁盘分为3部分，partition C—系统区； partition E—准备存文件；
partition F—准备备份系统镜像。
然后用系统备份软件将系统镜像备份到F区。
出于好奇，于是用软件试着恢复系统镜像, 但我没有恢复到C区(其实是担心出错将系统
搞坏了)，而是选择恢复到E区，之后重启电脑，最后桌面有两个选择(两个win8系统)，
一个显示windows 8, volume 4, 这个就是最初原来的系统；一个显示windows 8,
volume 5, 这个是我恢复到E区的系统。我试了一下，选哪个volume的windows 8都没问
题，都可以进系统 (只是正在启用的系统所在的区总会显示为盘符C)。
我现在想知道这两个系统是独立的吗？ 就是说如果其中一个系统有问题了或者崩溃，
另一个是不是可继续正常使用？
多谢！ |
|
v****n
发帖数: 7841 | 4 upgrade到DM 4.2了，过程如下。
1，下载 DS3612xs_3202-Repack.pat ， microserver-dsm-4.2.img ， modules-4.2.
tar.gz
https://drive.google.com/folderview?id=0B5tpWhEINjUONzhFaEgzazU4aEU&usp=
sharing#list
2，卸下所有HDD（多于1块并且用了RAID的话，记录下顺序），连上一块儿没用的HDD在
Disk 1
3，重复lz的说明安装DM 4.2
4，安装完成后，remove刚才的Disk 1，装上原来HDD的第一块儿，注意顺序。
5，启动N40L，打开synology assitant，显示是migratable，右键点击安装，选择新的
DM4.2 pat文见（程序会自动跳过format过程）
6，安装完成开机，看看是否安装成功。
7，成功显示DM4.2以后，关机，装上剩余的HDD
8，再次开机以后，打开Storage Manager，会要求修复剩余盘的System partition，点
击修复。
9，安装完成。
其他的一... 阅读全帖 |
|
v****n
发帖数: 7841 | 5 upgrade到DM 4.2了，过程如下。
1，下载 DS3612xs_3202-Repack.pat ， microserver-dsm-4.2.img ， modules-4.2.
tar.gz
https://drive.google.com/folderview?id=0B5tpWhEINjUONzhFaEgzazU4aEU&usp=
sharing#list
2，卸下所有HDD（多于1块并且用了RAID的话，记录下顺序），连上一块儿没用的HDD在
Disk 1
3，重复lz的说明安装DM 4.2
4，安装完成后，remove刚才的Disk 1，装上原来HDD的第一块儿，注意顺序。
5，启动N40L，打开synology assitant，显示是migratable，右键点击安装，选择新的
DM4.2 pat文见（程序会自动跳过format过程）
6，安装完成开机，看看是否安装成功。
7，成功显示DM4.2以后，关机，装上剩余的HDD
8，再次开机以后，打开Storage Manager，会要求修复剩余盘的System partition，点
击修复。
9，安装完成。
其他的一... 阅读全帖 |
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s*******y
发帖数: 851 | 6 I just fixed mine tonight.
create a 260MB partition on m.2 dirve and give it a letter e.
Open a cmd with administrator privilege and run the following command.
bcdboot c:\windows /s c: /f UEFI
Reboot and you are all set. You can delete all partitions on main hdd. You
may need to run the set up dvd to do that because you can't delete those
special partitions in windows. |
|
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l******n
发帖数: 1204 | 8 用diskpart的命令convert gpt,然后建立三个primary partition，
从光盘安装，总是无法识别:could not find a new partition or locate an
existing one. for more information, see the setup log files
问题出在那里？
没有设reserved partition,会不会因为这个？
用active命令，系统报错：提示gpt上的分区不能active, 因为这个?
谢谢。 |
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t****t
发帖数: 6806 | 9 https://en.wikipedia.org/wiki/GUID_Partition_Table
"The EFI stipulates a minimum of 16,384 bytes be reserved for the partition
table array, so there are 128 partition entries reserved, each 128 bytes lon
g."
*minimum* of 16384 bytes reserved for partition table array |
|
F*********n
发帖数: 64 | 10 下载一下DOS启动盘 Hirens BootCD
http://www.hirensbootcd.org/files/Hirens.BootCD.15.2.zip
里面包括下面的硬盘工具：
Active Kill Disk 4.1.2393
Securely overwrites and destroys all data on physical drive.
CrystalDiskInfo 4.0.1
HDD health monitoring utility, displays basic HDD information, monitors S.M.
A.R.T. values and disk temperature.
Darik's Boot and Nuke (DBAN) 1.0.7
Completely deletes the contents of any hard disk it can detect.
DRevitalize 1.2
Repairs bad sectors (physical defects) on hard drives by generating ... 阅读全帖 |
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F***Q
发帖数: 6599 | 11
you must have installed grub on the Linux partition (say, /dev/sda5) instead
of the partition with mbr (/dev/sda). you can fix it by reinstalling grub
to /dev/sda.
you can do this by (use sudo fdisk -l to find out which one is your boot
drive)
sudo grub-install /dev/XXX
sudo update-grub
or using the live usb
http://howtoubuntu.org/how-to-repair-restore-reinstall-grub-2-with-a-ubuntu-live-cd
if your windows partition is missing from grub menu, you can repair it by
sudo add-apt-repository ppa:yan... 阅读全帖 |
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w****g
发帖数: 597 | 12 Thank you for your reply.
Yes. I already boot up to a running system with the live cd. I saw the
partitions in file manager with names, for example, DATA2. (please see photo
proof at 2nd reply, the left bottom corner of that attached photo show '
DATA2')
Then, I had my question: Is DATA2 partition /dev/sdb1 or sdb2, or
sdb3,..., or sdb5, how can I find the information?
Here is reason: I am planning to install Ubuntu into my DATA2 partition at external USB hard drive because DATA2 is blank. But, |
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Z****e
发帖数: 2999 | 13 I think you need to use manual partition and create a root partition and
ideally a swap partition as well
间。 |
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i*****u
发帖数: 26 | 14 我google了一下，不知这个行不行：
http://jaguar07.wordpress.com/2009/06/01/fedora-11-workaround-found/
There is now a way to install F11 x64 on a Nvidia or Intel ICH10R RAID that
was initially created using the Windows method. Install Fedora 9 x64 from
the Full install DVD. Partition as needed. Once that is complete, use a
minimal install set for Fedora 9. We did this for the ability to slice the
partitions safely only. Next use a F11 CD to install on the existing
partition and say format the existing partiti |
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c**d
发帖数: 3888 | 15 我不编程，不玩游戏，有需要再设个partition装Linux吗？
在网上看了看，Windows和Linux最好不share partition。 如果装Linux，应该给它多
大的partition？
先谢 |
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a*******e
发帖数: 3021 | 16 how can u shrink a partition during installation?
you can only make new partition or delete partition.....
and all fedora does is to fdisk, make filesystem. If anything wrong, it
probably will be making fs.
you will have to reinstall it after reformating / i guess. |
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j**********p
发帖数: 22 | 17 dual boot with ubuntu 10.04 on macbook pro 5.4:
1. use bootcamp to shrink the existing partition.
2. install rEFIt
3. boot with the ubuntu CD from rEFIt, and install to the partition to the
3rd partition or which ever is created by bootcamp.
The only thing you need to pay attention is that during ubuntu installation,
make sure grub is installed on sda3 instead of sda.
good luck! |
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H*****1
发帖数: 4815 | 18 can't see the partition... >_<
if I use a partition software in windows and combine the free space with my
other partition, will I be able to restore the data?
thanks! |
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l****r
发帖数: 14809 | 19 第一次玩Linux，准备在XP上装Fedora dual system，
Fedora 装在第二个硬盘的一个分区里，这个硬盘还有一个分区有用的东西
在选择安装空间的问题出现了问题，
如果选择“remove all linux partition on thie system",
看起来好像是整个硬盘都被格式化，不敢下手
如果选择“remove all partition on this system”,
结果跳出来的message是“no free space”
如果选择“keep all partition and use free space”
弹出来的message 是“no free space”
不敢贸然安装，请问是不是得单独准备一个硬盘？ |
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D**a
发帖数: 757 | 20 我的NAS突然之间就当机了， 好像是ROM或者FIRMWARE出了问题，HDD读不出了。 NAS是
个LINUX BASED的盒子，我把硬盘去了出来， 接到了我的VM上，现在是如下情况， 请
问该如何处理？ HDD上是所有的照片和文档， 不能格式化。是下面那个1T的盘。
To run a command as administrator (user "root"), use "sudo ".
See "man sudo_root" for details.
lbblmm@lbblmm-VirtualBox:~$ xfs_repair
Usage: xfs_repair [options] device
Options:
-f The device is a file
-L Force log zeroing. Do this as a last resort.
-l logdev Specifies the device where the external log resides.
-m maxmem ... 阅读全帖 |
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R*R
发帖数: 2661 | 21 http://ubuntuguide.org/wiki/Ubuntu:Oneiric#Dual-Booting_Windows
"Conversely you can install a retail version of Windows (but not an OEM or
recovery version) after Ubuntu by creating a primary NTFS partition using
GParted. (You may have to use GPparted from a Live CD/USB). Once the primary
NTFS partition is created you can boot your Windows CD/DVD and choose to
install Windows to that NTFS partition. When installation is complete,
reboot to insure Windows boots properly. Once that is ascertained,... 阅读全帖 |
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k*****u
发帖数: 1688 | 22 【 以下文字转载自 Hardware 讨论区 】
发信人: killniu (killniu), 信区: Hardware
标 题: pogoplug安装好了dibian，现在可以登录进去了
发信站: BBS 未名空间站 (Sun Dec 2 15:09:14 2012, 美东)
安装步骤从这儿来
http://www.terminally-incoherent.com/blog/2012/09/19/set-up-a-h
昨天晚上一直不行，可能是u盘删除partition的问题。今天从新试就没有问题。如果要
删除partition，在/sbin/fdisk /dev/sda 之后按o可以删除所有partition。我是在
windows下删掉的。
现在想做的事情：
1：copy一个备份，是不是插上另一个u盘，然后dd if=/dev/sda of=/dev/sdb 就可以
了？
2：怎么安装bt啊？debian下面什么bt软件好？或者能搞迅雷也行。 谢谢
|
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g***l
发帖数: 2753 | 23 fedora 20, use dd to backup partitions. There are two partitions on the disk
/dev/sdb2 and /dev/sdb3
My usual image backup is as follows:
1. Mount and zero out the empty space:
dd if=/dev/zero of=temp.dd bs=1M
until full empty disk is wiped with zeros, then
rm temp.dd
2. dd the partition while compressing it:
dd if=/dev/sdb2 conv=sync,noerror bs=64K | gzip -c > /mnt/wine/sdb2.ddimg.gz
dd if=/dev/sdb3 conv=sync,noerror bs=64K | gzip -c > /mnt/wine/sdb3.ddimg.gz
But today when I tried to put the s... 阅读全帖 |
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g*******y
发帖数: 1930 | 24 Good idea to consider set partition
But I think there's a flaw, in election zone problem, a valid partition will
result in that the sum of subset falls within a certain range.
For example, m1, m2, m3 ... m_n are votes for party A:
M = sum of {m1...m_n}
a subset with n/2 element: {m_i1, m_i2,...m_i(n/2)}
X = sum of {m_i1, m_i2,...m_i(n/2)}
a valid partition requires:
nm/4 < X < M-nm/4
which means the target subset sum is a range, not a single value;
in contrast, in the Subset NPC problem, the tar |
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o*******0
发帖数: 699 | 25 系统设计，或者算法。
table 重新partition 的话，一般要下线，re-partition好再上线。用两个duplicate
系统，升级一个备份，上线后再升级另一个备份，但这个不符合要求。
要求是不离线，但要增加partition,使系统升级。 |
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o*******0
发帖数: 699 | 26 我觉得应该是这样：
original partition ID%2: 0->Machine1, 1 ->Machine2
client calls partition 1 or 2 based on ID
end partition ID%3 0->Machine1, 1->Machine2, 2->Machine3
Intermediate state:
Step 1: Machine1 and 2 "copy" all ID%3 = 2 to Machine 3, Machine 1 and 2
still serve live traffic. Client still only calls 1 or 2 based on ID
Step 2: Machine 3 joins Service. Client uses new algorithm: ID%3 = 2 call
machine 3, ID%2=0 and ID%3 = 0 or 1 call machine 1, ID %2=1 and ID%3 = 0 or
1 call machine 2. Machine1 a... 阅读全帖 |
|
g*****g
发帖数: 34805 | 27 原来大师也有不懂的东西呀，partition tolerance说的是partition的时候，各个分裂
系统继续
独立工作。
您老的系统，一旦出现DC之间互相不通，您老的系统就撂担子不干了。您老认定自己的
系统是eventual consistency的，
但其实是不支持P呀。
但为啥您老的系统看似可行呢，还不是那无敌500万的处理能力，比俺们凡人写的快
1000倍吗？处理能力上去了，就相当于票下来了。用普通人可以理解的方式说，就是问
春运每天10000票，最高每秒1000张，每秒能处理5000张，怎么弄？我同样会说让它跑
两秒就完了，一个
简单standby足够，需要啥partition tolerance。所以大师说银河系的票卖不了，天朝
的没压力是恰如其分的。天朝
这点票不需要大师上分布式，可不迎刃而解吗。大师的500万排山倒海，本来就是无敌
的。
还有大师怎么能说我是PA呢，难道复述大师的言论也是对大师不敬吗？ |
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C*********r
发帖数: 21 | 28 最近刚开始学Spark，因为没有看过源代码，麻烦大家想请教几个问题。
1. RDD在创建的时候是lazy的，并且有narrow和wide两种类型，例如map，filter是
narrow类型的所以不需要额外的shuffle。但是groupbykey之类的就需要shuffle了。并
且每个RDD会保存有自己所对应的partition信息。我的理解是每个action或者
transformation都会被Spark internally翻译成map reduce job来执行。
我的问题是翻译之后的map reduce job的并行度是和哪些因素有关系呢？partition的
数量还有executor的数量还有executor-core的数量之间是什么样的关系呢？例如
parition越多并行的task也会越多么？
2. 当我groupbykey的时候RDD会记录下我当前的RDD中有多少个key value么？并且这些
key value和上面说的partition有什么样的联系呢，还是完全不想关的两个概念？
3. 一个RDD的action或者transformation会被转换成多少ma... 阅读全帖 |
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C*********r
发帖数: 21 | 29 many thanks for the clarification!
比如说我有一个两个column的table (name, money). 我想以name为key对money做一些
data mining（或者一些复杂的计算）。所以我会做以下的步骤
step1 -> 把table map 成一个file RDD
step2 -> file RDD recudeByKey(name) 或者groupByKey(name)
step3 -> 在第二步产生的RDD上面apply一些其他的运算
那么step2中的reduceByKey加入我设置partition number为100，但是我其实是有200个
distinct names，所以其实平均下来每个partiton里面会有两个（name， list
) pair么？然后每个partition会被分配给一个task进行执行。假如我的配置是(5,4,16
)，所以每个partiton里面即使有两个pair，但还会顺序的进行执行，对么？这里是我
一直非常confuse的地方。。
如果这种情况下的化，我的partition数... 阅读全帖 |
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f********r
发帖数: 304 | 30 我建议初学者不需要太刻意手动设置partition的数目，spark framework一般会帮你选
择合适的数目。如果你的cluster有上一千个节点，每个cpu都是8core的情况，那你理
论上可以同时运行8k个task。这种情况下你增加partition数目或许可能会有帮助。但
前提条件也是真正的运算dominate主要task时间，不是seriliazation/
deserialization或者network的overhead。如果task都是ms level说明你的partition
数目太多了。整个spark tuning是个很tricky的过程，我不建议花太多时间在这个上面
。大部分情况你的改进空间是很有限的。应该多花时间考虑你的算法逻辑，balance你
的dataset。 |
|
h*i
发帖数: 3446 | 31 nosql这种东西的好处就是多机，而多机主要的问题是网络的延迟和不可靠
，追求单机性能是本末倒置的。而分布式软件的设计难点就是对CAP定理的处理，
consistency, availability, partition tolerance,这三个不能兼得，只能保证两个
。很多分布式软件自称是CP的，也就是号称在网络partition （也就是网络的一部分不
能访问另一部分）的时候，能保持数据的一致性。这个Jepsen（https://aphyr.com/
tags/jepsen）就是用来测试这种广告是否属实的一个工具。
Jepsen测试目前测出来没问题的软件就只有Zookeeper。其他被测过的，C*, Mongo,
Redis,Kafka，ES, Riak, Areospike, 等等， 全都有设计问题，网路partition都会造
成数据不一致或者数据丢失。
常用的分布数据库里面，couchbase还没被测过，这个是用erlang写的网络部分，可能
没问题吧？还有就是被Apple买了的FoundationDB, 自己的内部测试就包括了Jepsen，
估计也没有问题。
其他的分布数... 阅读全帖 |
|
m***h
发帖数: 77 | 32 我有这么一个问题拿不定主意。
在一个team/group/organization里sell这个big data最好的方式就是在不动
production或用最小的cost的前提下提供现系统不能提供的feature。譬如，我们一个
大app，一堆API，一堆server，每个API都写很多（大部分是垃圾）到本地的log files
。可以想象一个login API，当一个user login后，一个thread会产生如下的log （实
际的log各种花样没这么简单）
［2015-10-11 02:00:00］ TP－123 com.xyz.api.login INFO BEGIN
［2015-10-111 02:00:00］ TP－123 com.xyz.api.login INFO user abcd is in
［2015-10-11 02:00:00］ TP－123 com.xyz.api.login INFO use is from IP 1.2.3
.4
［2015-10-11 02:00:00］ TP－123 com.xyz.api.login INFO user has ... 阅读全帖 |
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n********d
发帖数: 7676 | 33 哎。现在已经变成口水站了。就是看怎么把问题简化到单机可做。这个问题，要让我做
，肯定还是会走scale out的路子。算法啥的都不是啥大问题，我的算法不好，但是也
没啥人能做的更好。这都是十多年前就研究透的东西。这个玩意，即使是线性网络，也
还是NP hard。而且routing 和 seat assignment肯定要一起做。没听说过还得让用户
自己去选路径的，搞一个专门做routing的机器选路径，然后问server能不能有票，没
票就再让做routing的机器选另一个路径，back and forth。这种方法也很蠢。N个前端
机一个server也不是个事。这个得懂点排队论。你说response time从server开始算，
这个有点耍流氓。用户可不管你是不是用前端队列buffer requests。anyway，用万能
轮子做scale out，俺也不太同意。俺个人看法，春运这种有特殊流量pattern的，如果
不在流量pattern上入手，简直就是犯罪。俺一个直觉就是要做geographic partition
，反正大多数都是从北上广到中西部走，geographic pa... 阅读全帖 |
|
c**********1
发帖数: 904 | 34 BootMgr is Missing in Dell Inspiron 14 / Windows 7
This question is not answered
Posted by DCAPT
on 19 Jan 2010 4:02 AM
I have recently bought an Inspiron 14 x64 based Laptop with Windows 7 64 bit
OS (OEM) and receive this msg "BootMgr is Missing."
1. It was fine at a start, but I allot my partition badly C:drive is only
30GB and Logical drives is 182GB, so I wanted an increase of C:
2. Thru a web forum I learn about "Partition Wizard Home Edition"
downloaded it and use it to come up with a... 阅读全帖 |
|
c**********1
发帖数: 904 | 35 BootMgr is Missing in Dell Inspiron 14 / Windows 7
This question is not answered
Posted by DCAPT
on 19 Jan 2010 4:02 AM
I have recently bought an Inspiron 14 x64 based Laptop with Windows 7 64 bit
OS (OEM) and receive this msg "BootMgr is Missing."
1. It was fine at a start, but I allot my partition badly C:drive is only
30GB and Logical drives is 182GB, so I wanted an increase of C:
2. Thru a web forum I learn about "Partition Wizard Home Edition"
downloaded it and use it to come up with a... 阅读全帖 |
|
e****r
发帖数: 581 | 36 New computers often comes with only one large partition. In Vista, you can
just shrink the partition first, then create new partitions as you like in
the unallocated disk space. |
|
|
m*****e
发帖数: 4193 | 38 Having spare space on a partition doesn't necessarily mean the whole partition
can be used.
Also you'd better keep critical stuff on / only, in case of emergency.
Otherwise what if that partition fails but fsck is on it? It's always
bad to add an extra point of failure. |
|
L***e
发帖数: 42 | 39 Can anyone explain in steps how to move /usr/local to
another partition?
like /dev/dsk/c0t0d0s7 (/hom1)?
What should I do to move a file?
I figure should be:
mv -f /usr/local /home1
link -s /home1/usr/local /usr/local
This would make /usr/local be the subdirectory of /home1,
right?
What if I want it to be at the level of /home1, but change
to the partition
/home1 resides? Is there anything need to be done in
/etc/vfstab?
How to specify /usr/local to a specific partition. Like
/dev/dsk/c0t0d0s7? |
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C*S
发帖数: 135 | 40 Yeah, that fdisk can do the work!
Can FreeBSD use any partition in the DOS extended partition?
(logic partition) |
|
c***h
发帖数: 51 | 41 On win98, double click setup. Select install a clean version
of win2k.
Then go into all the options. There is a place to specify
the install
directory and a checkbox about partition (forget the exact
name). Check
it. After install program restart the computer, it will ask
you which
partition you wanna use and whether you want to convert to
NTFS or leave
as FAT32. You can install WINNT (win2k) directory in the
same partition
as WINDOWS (win98). I put win98 in C: and win2k in D:. The
installation |
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d*******r
发帖数: 432 | 42
just copying from a book :)
fixboot - writes a new partition boot sector on the system
partition
fixmbr - writes a new Master Boot Record (MBR) for the
partition boot sector |
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