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  • USB sticks optimized for OS booting and virus removal [closed]

    - by Rupert
    I'm looking to buy some usb sticks which will mainly be used in tech support for the purposes of removing viruses and booting up various OS's. Therefore, I am looking for the following features: Write protected switch (so that they may be safely plugged in to potentially infected machines) As fast as possible (so that loading, for example, a windows recovery, doesn't take forever) At least 4GB in size Any other features that might be useful for the above purpose Price is no object but, of course, the cheaper the better.

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  • 4 month old 500 GB SATA HDD making noise?

    - by metal gear solid
    My 4 month old 500 GB SATA HDD making noise sometimes and the PC hangs when it makes noise when the noise stops desktop work fine. It doesn't happen every day but it does happen. Is something wrong with HDD, Data, power cable, or my cabinet's power supply? Should I run scandisk or defragmentation on the disk.

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  • one 16K random read I/O issues 2 scsi I/O (16K and 4K) requests in linux

    - by hiroyuki
    I noticed weird issue when benchmarking random read I/O for files in linux (2.6.18). The Benchmarking program is my own program and it simply keeps reading 16KB of a file from a random offset. I traced I/O behavior at system call level and scsi level by systemtap and I noticed that one 16KB sysread issues 2 scsi I/Os as following. SYSPREAD random(8472) 3, 0x16fc5200, 16384, 128137183232 SCSI random(8472) 0 1 0 0 start-sector: 226321183 size: 4096 bufflen 4096 FROM_DEVICE 1354354008068009 SCSI random(8472) 0 1 0 0 start-sector: 226323431 size: 16384 bufflen 16384 FROM_DEVICE 1354354008075927 SYSPREAD random(8472) 3, 0x16fc5200, 16384, 21807710208 SCSI random(8472) 0 1 0 0 start-sector: 1889888935 size: 4096 bufflen 4096 FROM_DEVICE 1354354008085128 SCSI random(8472) 0 1 0 0 start-sector: 1889891823 size: 16384 bufflen 16384 FROM_DEVICE 1354354008097161 SYSPREAD random(8472) 3, 0x16fc5200, 16384, 139365318656 SCSI random(8472) 0 1 0 0 start-sector: 254092663 size: 4096 bufflen 4096 FROM_DEVICE 1354354008100633 SCSI random(8472) 0 1 0 0 start-sector: 254094879 size: 16384 bufflen 16384 FROM_DEVICE 1354354008111723 SYSPREAD random(8472) 3, 0x16fc5200, 16384, 60304424960 SCSI random(8472) 0 1 0 0 start-sector: 58119807 size: 4096 bufflen 4096 FROM_DEVICE 1354354008120469 SCSI random(8472) 0 1 0 0 start-sector: 58125415 size: 16384 bufflen 16384 FROM_DEVICE 1354354008126343 As shown above, one 16KB pread issues 2 scsi I/Os. (I traced scsi io dispatching with probe scsi.iodispatching. Please ignore values except for start-sector and size.) One scsi I/O is 16KB I/O as requested from the application and it's OK. The thing is the other 4KB I/O which I don't know why linux issues that I/O. of course, I/O performance is degraded by the weired 4KB I/O and I am having trouble. I also use fio (famous I/O benchmark tool) and noticed the same issue, so it's not from the application. Does anybody know what is going on ? Any comments or advices are appreciated. Thanks

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  • Is it possible to trick iTunes treating an external HD as an iPod?

    - by Boris Pavlovic
    I keep my music collection on my iPod, but since I got my first iPhone two and a half years ago I have quit using the iPod as a portable music device. It's just an external HD. Benefit of having it as an external HD is that when it's connected to some other computer iTunes can play its music and update iTunes database. It would be nice if I could copy data from the iPod to an external USB HD and give away the iPod to somebody who doesn't have one.

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  • Pendrive not working on USB port - USB2 Enhanced Host Controller - 27CC

    - by user1664417
    I have a situation here, is kind of weird. Situation as below: If i enable the 'Intel(R) 82801G (ICH7 Family) USB2 Enhanced Host Controller - 27CC' , then my pc will not be able to read any USB stick/pendrive, but usb port work fine with keyboard and mouse. If I disable the device driver, then all kind of pendrive can be read. Below is What i have done : 1) try the same pendrive on other pc, it work like charm. 2) try others pendrive on issue pc, same problem, but it work fine in others pc. 3) try all the port, including the port that connected to mouse n keyboard. 4) update the driver version. 5) restore default setting of usb in bios Please help to solve these issue if anyone experience it before. Many thanks.. :

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  • Would an array of SSD drives be able to succesfully substitute the system memory?

    - by Florin Mircea
    I watched a few videos trying to answer this. This video (youtube.com/watch?v=eULFf6F5Ri8) shows a bunch of guys stacking 24 SSD's reaching a peak of around 2GBps r/w. That's under the limit of the worst DDR3 in this list (memorybenchmark.net/write_ddr3_amd.html) - that shows DDR3 memory performance varying from 2.78 to 6.55 Gb per second, but that video is over 3 years old. This video (youtube.com/watch?v=27GmBzQWwP0) shows a more optimistic situation, but for PCI-E SSD drives: 5 drives peaking at around 4Gb. And this other video shows that stacking up more than 3 SSD's doesn't realistically offer a substantial added performance. This and the fact that in all benchmarks the drives act quite poorly when dealing with small files (5k file read/write averaging from 10MB to around 30-40MBps) as opposed to how native memory handles such files, seems to indicate a definite NO to this question. Also, the write life cycle is indeed limited and the drives might wear out quickly, as kindly pointed out by paddy. However, I wanted to get more opinions on this. Would it be possible to at least obtain current memory performance with SSD's in RAID 0? And if so, in what circumstances? I am assuming using this configuration with a Windows OS that has a memory pagefile resident to that stack of SSD's, thus making it very fast to work with.

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  • How to corrupt my hard disk ?

    - by amit
    Hi superuser, Please tell me how to corrupt my hard disk. I have Dell Inspiron 6400 & it's under complete cover insurance. Operating system is WindowS Vista Premium. So please tell me the method which actually work & damage/corrupt my hd.

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  • Software RAID 1 Configuration

    - by Corve
    I have created a software RAID 1 quite some while ago and it always seemed to work for me. However I am not completely sure that I have configured everything right and do not have the experience to check so I would be very grateful for some advice or just verification that all seems right so far. I am using Linux Fedora 20 (32 bit with plans to upgrade to 64bit) The RAID 1 should consist of two 1TB SATA hard drives. This is the output of mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sun Jan 29 11:25:18 2012 Raid Level : raid1 Array Size : 976761424 (931.51 GiB 1000.20 GB) Used Dev Size : 976761424 (931.51 GiB 1000.20 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Sat Jun 7 10:38:09 2014 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : argo:0 (local to host argo) UUID : 1596d0a1:5806e590:c56d0b27:765e3220 Events : 996387 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 0 1 active sync /dev/sda The RAID is mounted successfully: friedrich@argo:~ ? sudo mount -l | grep md0 /dev/md0 on /mnt/raid type ext4 (rw,relatime,data=ordered) Basically my question are: Why do I only have 1 active device? What does the State removed at bottom mean? Also I noticed some strange error messages that I see on the console on system start and shutdown and always repeating in the background when I switch with Ctrl + Alt + F2: ... ata2: irq_stat 0x00000040 connection status changed ata2: SError: { CommWake DevExch } ata2: COMRESET failed (errno=-32) ata2: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen ata2: irq_stat 0x00000040 connection status changed ata2: SError: { CommWake DevExch } ata2: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen ... Are these errors related to the RAID? Something seems wrong with the SATA devices.. All together the system works (I can read and write to the mounted raid) but I always had these strange errors on startup shutdown (probably always in the background). Thx for your help

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  • Windows 8.1 - Why are there multiple recovery partitions in the system?

    - by Abhiram
    DISKPART> list partition Partition ### Type Size Offset ------------- ---------------- ------- ------- Partition 1 System 500 MB 1024 KB Partition 2 OEM 40 MB 501 MB Partition 3 Reserved 128 MB 541 MB Partition 4 Recovery 490 MB 669 MB Partition 5 Primary 920 GB 1159 MB Partition 6 Recovery 350 MB 921 GB Partition 7 Recovery 9 GB 921 GB Above is the list of partitions on my system that I recently upgraded to Windows 8.1. Why are there multiple recovery partitions (4,6,7)? Shouldn't there be just one recovery partition? And what is the Reserved partition (#3) for?

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  • Install Windows 8 Apps to custom directory

    - by Timothy Ford
    I'm running Windows 8 Pro on a laptop. I initially installed the OS just to fiddle round with it and get to know something I'd inevitably end up having to fix for someone. The problem being I only gave the partition about 32gb and that ran out pretty quick. I'd like to install office and get used to that as well but unfortunately I'm a few gigabytes short. I'd like to know if I can change the install location of office 2013 and other apps so that I can run them from another partition because there is no space left to the right of this partition I can't extend it.

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  • Recover data from a Windows Dynamic Volume Spanned Disk

    - by iCe
    I have a dynamic volume created with two spanned partitions over two disk. Recently, one disk has started failing, and I want to copy the data inside that disk to another disk, before replacing it. However I don't know how to select only what is inside the failing disk, because the partitions spans across both disks. Maybe imaging the entire disk should do the work? Or I have to copy all the data from both disks? Thanks in advance!

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  • Need help toubleshooting PC

    - by brux
    I have had problems since my dog pee'd on my computer. Problem: loads windows fine, at random intervals from 5 minutes to 30 minutes it restarts itself. There is nothing in the event log such as errors, no BSOD, just cold restart. after restarting - sometimes- it POST's and restarts itself at the end of POST. It will do this many times and then finally load windows. The cycle then begins again, it will restart eventually. What I have done: I thought it was HDD at first, since this is the only part of the computer which actually got wet with any fluid ( the case is off the PC and the dog pee'd down the front where the HDD is located). Seatool, the seagate HDD tool, found errors when I ran it inside windows, so I ran it in DOS mode from boo-table USB and ran it. It found the same number of errors and fixed them all. I ran the scan again and it says "Good". I loaded windows and ran the scan and it also said "Good there. So the HDD appears to be fine but the problem persists, random restarts. What else could this be? I have taken the computer apart and cleaned everything and also taken the PSU apart and cleaned it thoroughly. The problem still persists, what should my next steps be?

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  • Check the disk for problems on Debian Lenny

    - by Equ
    Hi guys! I just bought a VPS hosting with Debian Lenny (I'm new to all this world). I've managed to install and setup everthing I need pretty well. My testing website works fast as expected most of the time, but sometimes it is really slow (response time is about 5-10 seconds). I checked everything and seems that there are may be some disk issues. How can I check the disk for problems/performance? What else could possible cause such a behaviour? Thank you!

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  • Dead-simple USB-based Windows partition cloner?

    - by OverTheRainbow
    Clonezilla is a fine open-source tool, but it requires going through several screens. Since I need to save/restore the same Windows partition, I was wondering if someone knew of a tool (open-source or not) that is easier to use and boots off a USB keydrive. Ideally, it'll save the two commands to save/restore a partition, so I just need to boot the host from the USB key, choose the command, and it'll take care of business. Are there solutions that look like this? Thank you. Edit: Here's one among other articles that shows how to tell CZ to run a script to avoid the multiple screens.

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  • How can I set deadline as the I/O scheduler for USB Flash devices by using udev rules?

    - by ????
    I have set CFQ as the default I/O scheduler. I often get bad performance when I write data into a Flash device. This is resolved if I use deadline as the I/O scheduler for USB Flash devices. I can't always change the scheduler manually, right? I think writing udev rules is a good idea. Can someone please write rules for me? I want: When I plug in a USB device, detect the type of the device. If it is a portable USB hard disk, do nothing (I think if a device has more than one partitions, it always a portable hard disk. If it is a USB Flash device, set deadline as it's scheduler.

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  • Can I change from BIOS IDE mode to AHCI mode at any time?

    - by Software Monkey
    Currently my Windows 7 computer is crashing during startup, after loading the AMD achix64s.sys driver, if I enable BIOS AHCI mode for the disks. It boots fine with IDE mode. Since I need my computer working, I am wondering if I can just use IDE mode for now, and later change to AHCI mode, when I figure out what is wrong. Background: I was running RAID mode, which needed additional drivers to install/boot Windows. But the MoBo RAID is flaky so I'm trying to switch to using a Windows mirrored volume instead - for that I expected to use AHCI mode.

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  • Web site kills hard disk I/O, how to prevent?

    - by Taras Voynarovsky
    The situation: I have a server, on which we have 2-3 projects. Starting not long ago, the server started hanging up (We could not connect to it by ssh, and the connected clients had to wait 20 minutes for top to give results) Early today I managed to execute gstat while it was in this state and saw, that it stays on 100% on da0, da0s1 and da0s1f. I dont quite know what those ids meen, but I understand that some processes just kill the HD by bombing it down with requests. I ask of some propositions. I dont know how to find the culpit and can't prevent this. I have freebsd on server.

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  • DVD RW: Are they still relevant for backups?

    - by Harry
    Hello, With the availability of compact USB memory sticks with much, MUCH higher storage capacities is there still any use-case for taking periodic, incremental backups on DVD/RWs? The DVD/RW has an additional annoyance that you cannot drag and drop files to it as easily as you can on a USB memory stick. So, if I have a 4.7GB DVD/RW, I must re-burn the whole image every time I backup new stuff... with possibly rearranged file/folder structure. Secondly, why in this day and age you cannot install a file-system (like ext3 or FAT32) on a DVD/RW... and likewise on CD/RW's as you can on a USB memory stick? Many thanks, /HS

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  • Tool to test USB sticks?

    - by Tony_Henrich
    Some of the files I copy to a USB stick seems to be corrupted? Maybe the stick is bad but I haven't used it much and want to know for sure. Is there a Windows utility to test the stick? Mark bad areas as bad so the file system doesn't save to them? I format before I copy but I still get corrupted files? Does chkdsk work on USB sticks reliably?

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