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  • Raspberry Pi how to format HDD

    - by Speed
    Hi I am very new to Raspberry Pi environment, so looking for a bit of help to format a usb hard disk drive. I ran lsblk and got sda 8:0 0 37.3G 0 disk sda1 8:1 0 37.3G 0 part looking on web, if tried the following "sudo mkfs.ext4 /dev/sda1 -L USB40gb" it did something but when I tried to mount the drive again, it still showed the files that were there before and I can not create new file/folder "Error creating directory: Permission denied" I am writing this from my windows 8.1 pc so can not cut and paste from the pi. trying to format its output is a bit hard. Oh, there is Nothing written after the word "part" above. There use to be /media/USB40gb so I have done something because this has disappeared. I am using PCManFM 0.9.10 It does not have a format option, which would make life a lot easier, but then its not windows. I think I am running the basic linux os for the pi. It boots to a graphic environment, but I do not know how to advise what it is. I think its OpenBox 2.0.4 Thanks in advance Speed PS: I reran the format string above but this time I changed the label to read USB37gb. I did this to confirm that I was in fact formatting the right drive. Low and behold, it actually formatted the drive, wiping everything from it. Great ... testing it by creating a new folder on the drive and get error msg Permission Denied! So I have fixed the formatting issue by trial and error but still can't use the drive... Suggestions anyone?

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  • Minimum cost strongly connected digraph

    - by Kazoom
    I have a digraph which is strongly connected (i.e. there is a path from i to j and j to i for each pair of nodes (i, j) in the graph G). I wish to find a strongly connected graph out of this graph such that the sum of all edges is the least. To put it differently, I need to get rid of edges in such a way that after removing them, the graph will still be strongly connected and of least cost for the sum of edges. I think it's an NP hard problem. I'm looking for an optimal solution, not approximation, for a small set of data like 20 nodes. Edit A more general description: Given a grap G(V,E) find a graph G'(V,E') such that if there exists a path from v1 to v2 in G than there also exists a path between v1 and v2 in G' and sum of each ei in E' is the least possible. so its similar to finding a minimum equivalent graph, only here we want to minimize the sum of edge weights rather than sum of edges. Edit: My approach so far: I thought of solving it using TSP with multiple visits, but it is not correct. My goal here is to cover each city but using a minimum cost path. So, it's more like the cover set problem, I guess, but I'm not exactly sure. I'm required to cover each and every city using paths whose total cost is minimum, so visiting already visited paths multiple times does not add to the cost.

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  • Ubuntu doesn't detect drives conected to LSI "Host Bus Adapter"

    - by dvrecmfo
    I purchased LSI SAS 9300-4i Host Bus Adapter, from card bios I can see that it detected all hard drives connected to it, but from ubuntu I can't see them. What I've tried: Installed the driver provided here http://www.lsi.com/products/host-bus-adapters/pages/lsi-sas-9300-4i.aspx#tab/tab3 (I tried both LINUX_RH_SL_OEL_CTX_MPT_GEN3_C0_Phase2.0-3.00.00.00-1 and Linux_Driver_RHEL5-6_SLES10-11_P1) lspci | grep -i lsi 07:00.0 Serial Attached SCSI controller: LSI Logic / Symbios Logic SAS3004 PCI-Express Fusion-MPT SAS-3 (rev 02)

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  • Can't activate dynamic disk

    - by SuperFurryToad
    For some reason I can't activate a dynamic disk connected to my PC via a USB hard disk enclosure. It has activated previously without any problems. When I check the event logs, I get this message every time I try to activate the disk: dmio: Harddisk2 write error at block 2930277167: status 0xc0000015

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  • Dell XPS 15z/ L511Z merging partitions

    - by Alvin M
    i have a situation here, i bought a new dell xps 15z and was successful in making drive partitions through the help of this site (http://superuser.com/questions/313082/dell-xps-15-l502x-hard-drive-partition) now i have drive C with 100.55gb and a new volume with 578.45gb im planning to use EaseUS again to undo this and resize my drive C but im scared i might cause damage to my drive, is there a proper way to undo this and transfer the remaining 78.45gb from the new volume back to my drive C again? please help

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  • why am I seeing "ghost" folder contents on Vista?

    - by user701510
    Today, after I clicked "folder X" in my external hard drive, instead of seeing the contents of "folder X", I see the contents of my flash drive...which is not connected to my computer. My flash drive's files show for a couple of seconds before I am brought to "folder X" which was the folder I wanted to go to as mentioned in the beginning of this post. Any idea why this happened? I'm using Vista 32-bit business edition.

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  • External hard drive becomes unwriteable after awhile

    - by Brandon
    I have an external USB hard drive mounted in Ubuntu 9.10 with full read/write abilities over SMB. If it stays on for awhile though, I lose the ability to write to it. I end up having to ssh in and unmount, mount, reboot in order to have write ability again. Any reason on what might be causing this and how to fix it?

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  • external hard drive is no longer recognized, gives buffer I/O errors

    - by BioGeek
    Hi all, The external hard drive which contains all my photos and where I backed-up all my important documents is no longer recognized. It is a three month old 500GB Iomage Prestige Desktop Hard Drive. When I plug it in, it is recognised as a USB device, because it shows up when I type lsusb, but dmesg gives this error message. [19712.013250] usb 2-2: new high speed USB device using ehci_hcd and address 21 [19712.145347] usb 2-2: configuration #1 chosen from 1 choice [19712.147214] scsi25 : SCSI emulation for USB Mass Storage devices [19712.147514] usb-storage: device found at 21 [19712.147519] usb-storage: waiting for device to settle before scanning [19717.148978] usb-storage: device scan complete [19717.149527] scsi 25:0:0:0: Direct-Access ST350082 0AS PQ: 0 ANSI: 2 CCS [19717.151020] sd 25:0:0:0: Attached scsi generic sg2 type 0 [19717.151685] sd 25:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [19717.160402] sd 25:0:0:0: [sdb] Write Protect is off [19717.160412] sd 25:0:0:0: [sdb] Mode Sense: 34 00 00 00 [19717.160418] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19717.165685] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19717.165691] sdb: sdb1 [19719.171808] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19719.171818] sd 25:0:0:0: [sdb] Attached SCSI disk [19737.430998] sd 25:0:0:0: [sdb] Unhandled sense code [19737.431007] sd 25:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [19737.431016] sd 25:0:0:0: [sdb] Sense Key : Medium Error [current] [19737.431027] sd 25:0:0:0: [sdb] Add. Sense: Unrecovered read error [19737.431038] end_request: I/O error, dev sdb, sector 6160463 [19737.431050] Buffer I/O error on device sdb1, logical block 6160400 [19737.431060] Buffer I/O error on device sdb1, logical block 6160401 [19737.431067] Buffer I/O error on device sdb1, logical block 6160402 [19737.431075] Buffer I/O error on device sdb1, logical block 6160403 [19737.431082] Buffer I/O error on device sdb1, logical block 6160404 [19737.431088] Buffer I/O error on device sdb1, logical block 6160405 [19737.431096] Buffer I/O error on device sdb1, logical block 6160406 [19737.431102] Buffer I/O error on device sdb1, logical block 6160407 [19737.431114] Buffer I/O error on device sdb1, logical block 6160408 [19737.431121] Buffer I/O error on device sdb1, logical block 6160409 [19737.712183] sd 6:0:0:0: [sdb] Unhandled sense code [19737.712191] sd 6:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE [19737.712200] sd 6:0:0:0: [sdb] Sense Key : Hardware Error [current] [19737.712210] sd 6:0:0:0: [sdb] Add. Sense: No additional sense information [19737.712222] end_request: I/O error, dev sdb, sector 0 [19737.712232] Buffer I/O error on device sdb, logical block 0 Neither does the external drive show when I use fdisk: jeroen@phalacrocorax:~$ sudo fdisk -l [sudo] password for jeroen: Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000341ad Device Boot Start End Blocks Id System /dev/sda1 * 1 18714 150320173+ 83 Linux /dev/sda2 18715 19457 5968147+ 5 Extended /dev/sda5 18715 19457 5968116 82 Linux swap / Solaris` I popped the disk out of the casing put it on a SATA connect internally and then tried the file recovery programs testdisk/photorec and SpinRite, but both failed because they couldn't recognize the external harddisk. Do I have any other options?

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  • Dell PowerEdge Server BitLocker Hotswap Hard disks

    - by JoshODBrown
    We have a Windows 2008 R2 Server running on a Dell PowerEdge R310 Server with Bitlocker enabled. There are two physical Hard disks configured as RAID 1. One of the disks recently started having an issue, so we have now have a warranty covered replacement for it, But we were curious if there will be any issues hot swapping the new drive in due to BitLocker being enabled? Has anyone had a similar experience with scenario?

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  • Match Hard Disk Partition Table?

    - by MA1
    What is the most efficient way to match the partition tables on two different hard disks? I have saved the partition tables using dd command in linux. The partition tables are from a Windows system.

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  • How useful is hard drive encryption?

    - by D Connors
    So, let's say you have a notebook, and you encrypt the entire hard drive. Whenever you boot it's gonna ask for a password, meaning nobody can access your data without the password. On the other hand, what if your notebook got stolen whilst it was in sleep mode? Is there any protection that the encryption can offer? Thanks

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  • i dont see the option to save the partition table

    - by Bipin Neupane
    the issue is this Undo the CLEAN command on the portable hdd : DISKPART unfortunately at step no 10, i dont see the option to save the partition table.but there are options for: deeper search quit write a partition. wat should i do?plz help(i run testdrive 6.14) here is how this happened... I ran cmd then diskpart then selected the volume used 'CLEAN' command to clear the configuration (accidentally) does reinstalling my windows solve this ? will my hard drive work on other computers?

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  • How to add unused space to another partition in gparted?

    - by user1490211
    In my hard drive windows takes up 100 gb, then backtrack takes up 100 gb. When I make backtrack's partition smaller i get 100 gb for windows, 50 gb for backtrack, and 50 gb of unused space (in that exact order). How do I reallocate that 50 gb of space to windows so that instead it is 150 gb for windows, then 50 gb for backtrack? I'm using gparted and i can't move the unused space or add it to windows' partition.

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  • Impossible to create/format install window 7 on unpartioned HD

    - by fra pet
    Hi guys i am getting nut reinstalling windows 7 on one of those Acer aspire all-in-one... The original OS(windows professional x64) was not starting, after the initial screen the bios was prompted. So step 1: i tried to access the system partition and reinstall everything but could not get at the point step 2: i set the bios to native ide and i tried to insert my original copy of windows professional and do a clean installation, but it does not allow me to format/create other partion form the installation mask step 3: my BAD, i tried to install ubuntu and i clean the whole hard drive, i was getting an error at some point during installation so i decided to get back to windows step 4: Windows 7 again, at the disk screen of the windows installation i entered into the prompt and played around with DISKPART... -i listed the disk and the HD was disk 0. -i selected disk 0. -i CLEAN disk 0 successfully. -i tried to create a CREATE PARTITION PRIMARY but gave an error cache corrupt and disk not up-to-date (after i try to create a partiton in disk 0 it disappear when i try LIST DISK and i have to restart before he can list DISK 0 again, RESCAN did not worked). -tried CLEAN ALL(2 hours) and succeeded. -try again to create primary partition and failed, same errors -try to install my old copy of windows xP pro and it seems to work, it create a partition, format(only quick worked, slow mode was at 0% after 1 hour so i stop), it start installing and around 90% installation said it could not copy a file and he stop -back on windows 7 again, it says that the hard drive has 490+gb unpartitioned but won't create a partition and format. -i tried again DISKPART as i though i messed up with the MBR when i installed ubuntu, so i did all of the instruction below http://www.sevenforums.com/tutorials/20864-mbr-restore-windows-7-master-boot-record.html http://support.microsoft.com/kb/927392 the errors were: on bootsect: the systne partiton was not found, Data error cyclic redundancy check on bootrec /FixMbr: A device attached to the system is not functioning but did not worked, and still can not partiton/format/install on a blank HD i tried some bootable clean disk tool and start infinite loop on the same errors the bios setting are: sata: native ide. if i put AHCL(or something like that does not load the HD and the DVD). quick start/quite start: disabled. Are there any other option or tools i can try before i try change the HD(That is my last option)? Thanks to everyone.

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  • primary master drive fail

    - by Kelly
    I purchased a new hard drive for my desktop and when I try to boot up the computer with a Windows disc in the drive, it will go through a bunch of screens and ask me which partition I would like to install windows into, but after it goes through the formatting step and reboots, I get a message saying Primary Master Drive Fails. How do I fix this?

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  • Appropriate USB enclosure to use with an Ultra ATA drive

    - by Topdown
    I have a friend with a broken iBook, but we wish to recover the hard disk. I haven't seen the drive itself, however the spec lists it as an "Ultra ATA drive". Could you please advise if this is 100% compatible with any standard USB IDE 2.5inch enclosure? Full spec: iBook 12" 1GHz(AP) 256MB DDR266 SDRAM built-in Keyboard/Mac OS X Bluetooth Module 40GB Ultra ATA drive Combo (DVD-ROM/CD-RW).

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  • Windows 8 Installation doesn't detect my SATA Maxtor 6V250F0 HDD

    - by dosaki
    I've been using Ubuntu on a desktop computer I have in my house and I'd like to try to install Windows 8 and replace the Ubuntu system. In the installation wizard of Windows 8 I get stuck in the point where I have to specify the HDD to install the OS to. The problem is that I cannot see any hard disk drive to select. I believe this may be related to drivers but I don't know where to get them. Can anyone help me with this?

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