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  • GA-P31-S3G motherboard usb flash drive boot

    - by user1048125
    I currently trying to understand if my motherboard supports booting from USB flash drive or not... In motherboard manual it written: "First/Second/Third Boot DeviceSpecifies the boot order from the available devices. Use the up or down arrow key to select adevice and press to accept. Options are: Floppy, LS120, Hard Disk, CDROM, ZIP,USB-FDD, USB-ZIP, USB-CDROM, USB-HDD, LAN, Disabled" Is there way to boot from 8GB USB flash drive?

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  • Restoring MBR, partition table, and boot sector of memory card without data loss ("USBC")

    - by Synetech
    Abstract I have a FAT32 memory card that when inserted into a computer causes Windows to prompt to format it. The card is definitely not supposed to be blank and has a bunch of files on it. Symptoms Using a hex-editor/disk-viewer, I examined the card and found that several sectors/clusters have been overwritten with something that has a signature of USBC at the start of the sector. Specifically, the master boot record (and partition table) is gone (hence Windows thinking the card is blank and needing to be formatted), as are the boot sectors (they have the USBC signature and a volume label of NO NAME and partition type of FAT32). Fortunately, it looks like both copies of the FAT are almost entirely intact (a few FAT entries at the start of a cluster here and there seem to be overwritten by USBC). The root directory is also nearly intact—I can see the volume label entry and subdirectory listings, but one sector is overwritten. (There are no more instances of USBC after the last one in the FAT2.) Hypothesis These observations seem to indicate some sort of virus that erases a few key filesystem structures, and then overwrites a few extra sectors here and there. Googling it seems to corroborate the idea of a virus, except that others report a file called USBC which does not apply here, and in fact, could not be possible since there is no filesystem to even see files. I cannot find any information about a virus with these symptoms, nor a removal tool. (I can't help but wonder if it is actually due to an autorun virus prevention tool.) Question I can likely fix the FAT corruption since they are mostly contiguous chains and maybe even the lost sector of the root directory, but does anyone know of a convenient way to restore or (re)create the MBR/partition table and boot sectors (without formatting or overwriting the data)?

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  • How to restore OEM software after upgrade from Vista to WIndows 8 on Notebook, Aspire 6935G

    - by Rocky
    Recently I upgraded my notebook from Vista home premium to windows 8 pro, now after updating most of the preinstalled programs by Acer, I've found out they are not restored as before. For example, I can't access my hidden hard disk drive utility, finger print scanner, etc. Please tell me how to restore all these programs by Acer on Windows 8 pro which were originally available when I purchased my notebook with Vista.

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  • Is there a system monitoring tool that lets me write complex queries against the data?

    - by benhsu
    I am looking for a system stat collection tool that will let me write queries against the data collected. I am planning to answer questions like: what is the average load, over the last 30 days, on this machine between 9AM and 5PM, as opposed to at night what was the average disk io on these 10 machines yesterday what was the average daytime memory usage on these 10 machines last week, as opposed to 2 weeks ago Has anyone done this with, say, collectd or graphite?

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  • Why is Windows "stuck" on the Welcome screen for so long?

    - by Perdana Putra
    I use Windows 7 with a laptop specifications processor core (Core i3), 2 GB DDR3 RAM, the remaining capacity on the system partition (25 GB). I do not know why the "welcome screen" takes a long time (about 40 sec), but yesterday only took about 10 sec., I tried to defragment the disk and do a virus & spyware scan with antivirus, but still the "Welcome screen" comes along. How do I get the welcome screen to pass by faster when Windows boots up?

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  • How to mount LUKS partition securely on server

    - by Ency
    I'm curious if it is possible to mount a partition encrypted by cryptsetup with LUKS securely and automatically on Ubuntu 10.0.4 LTS. For example, if I use the key for the encrypted partition, than that key has to be presented on a device that is not encrypted and if someone steals my disk they'll be able to find the key and decrypt the partition. Is there any safe way to mount an encrypted partition? If not, does anything exist to do what I want?

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  • centos freezes with this error kernel: ata1.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x0

    - by lakshman
    0 down vote favorite share [fb] share [tw] I am using centOs 5.5 version with raid 1 configuration the server freezes and goes to non response . the only thing i found on messages file is kernel: ata1.00: exception Emask 0x0 SAct 0x7fffffff SErr 0x0 action 0x0 The server is built recently Please let us know what is the problem the hard disk details are Model Number: ST500NM0011 Serial Number: Z1M02LT7 Firmware Revision: SN02

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  • Install xenserver on iscsi target

    - by Ghassen Telmoudi
    Is is know that Xen Server is based on CentOS, and it is fact that CentOS can be installed on an ISCSI target flawlessly, but I wanted to install Xen server on an ISCSI target I couldn't find a way. I already tried the latest version of xen server 6.2, and there is no obvious way who to do the installation without a local disk. Does anybody have an idea about the subject, or did someone know how to do it? Please share your experience about this subject.

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  • Total RAM % from perfmon Windows Server 2008 R2

    - by Xaxum
    I am trying to find a good way to get available RAM percentage from perfmon. I can get Available Mbytes but I can't find any way to get the total installed memory on the server or what is in use via perfmon. I can obviously alert on GB but each of my servers have different total RAM so not a great alert. The way I understand % Committed Bytes is this includes page files on disk so this is not a good indicator. Any help would be appreciated.

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  • few questions on clone zilla

    - by user23950
    I'm trying to clone my windows xp installation. If I back it up using clone zilla and the my xp machine is infected by virus/spyware would I also be bringing the whole mess when I try to back it up. Do I need the whole partition/ whole disk if I use an external hard drive to backup. Would the data be formatted on the partition that I choose?

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  • How does data I/O takes place on USB Flash Memory ?

    - by user35704
    I want to know how is data I/O takes place on flash drives which are typically EEPROM's . I thought so as I was writing a C Program that involves file handling . For a normal HDD , that would involve returning the file pointer and reading or writing data to the disk which would be done by read/write HEAD . While in EEPROM's there is no read/write head , as it's works on mnemonic commands , So how come does the C file handling program works when I apply it to a file on flash drive ?

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  • I accidentally made my new hard drive (the non system drive) my primary partition

    - by qwerty2
    Hi all, When installing a new hard drive, I accidentally formatted it using 'Disk Management' and set it up as my primary active partition, even though it isn't the system drive. Then, when I restarted my machine, Windows wouldn't boot, citing a missing or corrupt SYSTEM folder. Can anyone help me re-enable the system hard drive as my primary active partition? Any help would be greatly appreciated.

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  • New harddrives failing within weeks.

    - by Jason Kealey
    I've experienced 8 hard disk failures in 3 months and have tried many things to solve the issue permanently but I have failed. I would like to know if you have any advice for me. System was running Win XP on an Asus P5W-DH Deluxe. I have setup a RAID-1 array. I started out with 2 x 500 GB 7200RPM Western Digital drives. One died. I took it out to RMA it. On the same day, the router was fried. Assumed a power surge occurred; connected an older UPS to protect the system. Once I got my hands on an identical disk, I installed it. The RAID array was rebuilt. A few days later, the other one died. Assumed the rebuild caused it to fail. Took it out for RMA. Before the other one arrived, the remaining one died. I then discovered I could re-enable them using the Intel Matrix Storage Manager. I re-enabled both and the system seemed fine for a week, until both died again. I got two new 1.5 TB 7200RPM Seagate drives and re-installed Windows 7. Also replaced the UPS and power supply. They both died again. The voltage on the plug is stable between 120 and 122V as per the UPS. None of the other devices have had any problems (monitors, etc.). At this point, I see two options: a) electrical issue in the house that was, for some reason, not blocked by the UPS. b) something else inside the system causing surges? motherboard? onboard raid controller? Failures happen fairly quickly, between 2 and 14 days after I fix the previous issue. I just gotten a new computer (Core i7) to replace it. If it is stable, I can determine that b) was the problem. If it fries its hard drive again, I can determine that it is an electrical issue in the house. Do you have any other thoughts? Any tools I can run on the drives that failed to get more information about the original SMART event history?

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  • KVM-Guest does not boot: qemudParsePCIDeviceStrs

    - by markus
    I have a Server running Ubuntu 10.10 Server-Edition kvm, and libvirt (both ubuntu-native packages) HDD-Partitioning was done with LVM. Then I created some VMs with Virt-Manager and assigned LVM-Volumes to the VMs. Now the VMs do not boot. Virt-Manager shows a CPU-Usage of 100% for this Guest and the VNC-Connection states Booting from Hard Disk The VM-specific logfiles do not show any abnormality only syslog shows a warning warning : qemudParsePCIDeviceStrs:1422 : Unexpected exit status '1', qemu probably failed What can I do to find the error?

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  • How to tune system settings for mongoDB on Linux?

    - by jsh
    Trying to squeeze a lot out of one question here -- please bear with me. Although the MongoDB man pages make several useful recommendations about system settings like ulimit (http://docs.mongodb.org/manual/reference/ulimit/), and other production factors (http://docs.mongodb.org/manual/administration/production-notes/) they seem mysteriously silent on things like virtual memory and swap settings. The closest we get to a hint is that "...the operating system’s virtual memory subsystem manages MongoDB’s memory..." (http://docs.mongodb.org/manual/faq/fundamentals/#does-mongodb-require-a-lot-of-ram). Running the same job - high writes and high reads on about 10,000,000 records in a single collection -- on my 4-processor, 4GB RAM macbook and an 8-core ubuntu box with 64GB RAM I saw dramatically WORSE read performance on the linux box with factory settings, and could hear the disk constantly spinning, indicating high I/O and presumably swapping. Yes, other things were happening on the box, but there was plenty of free RAM, disk space, etc.; furthermore, I did not see evidence that Mongo was expanding to take advantage of all that free RAM as it is touted to do. Linux box default settings were as follows: vm.swappiness =60 vm.dirty_background_ratio = 10 vm.dirty_ratio = 20 vm.dirty_expire_centisecs =3000 vm.dirty_writeback_centisecs=500 I hazarded some guesses looking at docs and blogs for other types of databases (Oracle, MYSQL, etc.), experimented, and adjusted as below. vm.swappiness=10 vm.dirty_background_ratio=5 vm.dirty_ratio=5 vm.dirty_writeback_centisecs=250 vm.dirty_expire_centisecs=500 I saw some immediate apparent improvements in read time. However, when I ran my test jobs again, read performance continued to be painfully sluggish during heavy writes. Then, I REBUILT the collection from an available data source - and suddenly I can read at 1ms or less per record WHILE doing the write job! So the question is really two-fold: 1) What are appropriate VM settings for MongoDB on Linux? 2) (bonus) Does Mongo do some checking or optimization with the OS while data is being built? In other words, if I have built a large data set with suboptimal VM or I/O settings, does Mongo make assumptions during the memory-mapping process that will fail to take advantage of optimizations down the road? Obviously I don't fully grok memory mapping under the hood (I was hoping I wouldn't have to). Any help appreciated...thanks! -j

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  • Allowing Apache in Ubuntu to access files in NTFS hard drive

    - by lyrae
    I have LAMP running in Ubuntu. However, my files are located on a separate NTFS hard drive (/media/shared/mysite/). going to http://localhost gives me a 403 how can i, securely, allow apache to read/write the NTFS disk? 'shared' is currently being mounted when system boots. here's the entry in fstab: /dev/sda1 /media/shared ntfs-3g quiet,defaults,locale=en_US.utf8,umask=000 0 0

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  • 7-Zip compression on multi-core computers

    - by Peter Mortensen
    Does 7-Zip take advantage of multiprocessor or multi-core systems when compressing? For example, would there be a close to 16 times speed-up on a 16 core system assuming no disk or memory bottlenecks? Or is it is limited to 2 threads (2 times speed-up on systems with more than one CPU or core)?

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