Search Results

Search found 9318 results on 373 pages for 'rescue disk'.

Page 74/373 | < Previous Page | 70 71 72 73 74 75 76 77 78 79 80 81  | Next Page >

• How to reinstall Mac OS X on OS X/Linux dual-boot system?

  - by strangeronyourtrain

  My setup: I have a MacBook Pro 5,5 with a Mac OS X Snow Leopard partition and a Linux partition. I use rEFIt to boot into Linux. I didn't use Boot Camp when I originally installed Linux; instead, I manually created the partition (with either Disk Utility in OS X or Gparted on a Linux live CD--I don't recall which one) and then installed Linux on it from a live CD. The problem: My OS X partition is corrupt, and I need to reinstall Snow Leopard. Since I installed rEFIt from within OS X, I'm concerned that wiping the OS X partition will prevent me from booting into my Linux partition. How can I do this without losing access to my Linux partition? Is it possible to install Snow Leopard on the partition I reserved for it, or will it automatically overwrite the entire drive? And if I do the fresh OS X install and then install rEFIt again, will it automatically recognize my Linux partition? Thanks for any tips! Specs: MacBook Pro 5,5 (Mid-2009); Snow Leopard 10.6.7/64-bit Sabayon Linux, 2.6.36 kernel EDIT/UPDATE: Thanks, but the situation has taken a more complicated turn: I tried to reinstall Snow Leopard from the DVD, but it refused to install onto my Mac partition, claiming: "The disk cannot be used to start up your computer." Disk Utility wouldn't let me resize the partition or create a new one, and it doesn't see my Linux partition. It only displays the two partitions "Macintosh HD" and Linux Swap. I can, however, see all the partitions from Linux. This is the partition table as shown in Gparted: And the output of "fdisk -l" is: WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 409639 204819+ ee GPT /dev/sda2 409640 349590464 174590412+ af HFS / HFS+ /dev/sda3 483122745 488392064 2634660 82 Linux swap / Solaris /dev/sda4 * 349590465 483122744 66766140 83 Linux Partition table entries are not in disk order I wonder if this is because I originally partitioned my disk with Gparted instead of OS X's Disk Utility (at this point, I don't recall whether I used Gparted or Disk Utility). In any case, it doesn't seem safe to do any reformatting with Disk Utility now, as I'm afraid it will wipe sda2 ("Macintosh HD") as well as sda4 (my Linux partition). So... I'm hoping to find a solution that doesn't involve wiping my entire hard disk. Would it be safe/possible to use Gparted to erase sda2 ("Macintosh HD") and then use the Snow Leopard DVD to install OS X onto [I]just[/I] sda2 without touching the other partitions? Thanks for any insight!

  Read the article

• How common are power supply failures in comparison to hard disk failures?

  - by Adrian Grigore

  Hi, My webhost offers two different types of high availability options for dedicated servers: Redundant hard disks (RAID1) Redundant hard disks (RAID1) plus redundant power supply How common is a power supply failure in comparison to hard disk failure? I know it's not possible to know the exact figures without knowing the exact hardware, but ballpark figures are good enough for me at the moment. Thanks, Adrian

  Read the article

• How to stop Time Machine on Mac to use removeable disk?

  - by ablmf

  One of my friend recently bought a Mac and somehow when she connect her removeable disk to the computer, Time Machine took control of this device use it as backup device automatically. So she could not use the disc for other purpose any more. When we connect it to windows, it could not be recognize any more. How can we get it back under control?

  Read the article

• Quantifying the effects of partition mis-alignment

  - by Matt

  I'm experiencing some significant performance issues on an NFS server. I've been reading up a bit on partition alignment, and I think I have my partitions mis-aligned. I can't find anything that tells me how to actually quantify the effects of mis-aligned partitions. Some of the general information I found suggests the performance penalty can be quite high (upwards of 60%) and others say it's negligible. What I want to do is determine if partition alignment is a factor in this server's performance problems or not; and if so, to what degree? So I'll put my info out here, and hopefully the community can confirm if my partitions are indeed mis-aligned, and if so, help me put a number to what the performance cost is. Server is a Dell R510 with dual E5620 CPUs and 8 GB RAM. There are eight 15k 2.5” 600 GB drives (Seagate ST3600057SS) configured in hardware RAID-6 with a single hot spare. RAID controller is a Dell PERC H700 w/512MB cache (Linux sees this as a LSI MegaSAS 9260). OS is CentOS 5.6, home directory partition is ext3, with options “rw,data=journal,usrquota”. I have the HW RAID configured to present two virtual disks to the OS: /dev/sda for the OS (boot, root and swap partitions), and /dev/sdb for a big NFS share: [root@lnxutil1 ~]# parted -s /dev/sda unit s print Model: DELL PERC H700 (scsi) Disk /dev/sda: 134217599s Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 63s 465884s 465822s primary ext2 boot 2 465885s 134207009s 133741125s primary lvm [root@lnxutil1 ~]# parted -s /dev/sdb unit s print Model: DELL PERC H700 (scsi) Disk /dev/sdb: 5720768639s Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 34s 5720768606s 5720768573s lvm Edit 1 Using the cfq IO scheduler (default for CentOS 5.6): # cat /sys/block/sd{a,b}/queue/scheduler noop anticipatory deadline [cfq] noop anticipatory deadline [cfq] Chunk size is the same as strip size, right? If so, then 64kB: # /opt/MegaCli -LDInfo -Lall -aALL -NoLog Adapter #0 Number of Virtual Disks: 2 Virtual Disk: 0 (target id: 0) Name:os RAID Level: Primary-6, Secondary-0, RAID Level Qualifier-3 Size:65535MB State: Optimal Stripe Size: 64kB Number Of Drives:7 Span Depth:1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default Number of Spans: 1 Span: 0 - Number of PDs: 7 ... physical disk info removed for brevity ... Virtual Disk: 1 (target id: 1) Name:share RAID Level: Primary-6, Secondary-0, RAID Level Qualifier-3 Size:2793344MB State: Optimal Stripe Size: 64kB Number Of Drives:7 Span Depth:1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default Number of Spans: 1 Span: 0 - Number of PDs: 7 If it's not obvious, virtual disk 0 corresponds to /dev/sda, for the OS; virtual disk 1 is /dev/sdb (the exported home directory tree).

  Read the article

• How can I determine if a VHD is a differencing disk?

  - by Ralph Shillington

  I have a VHD that I suspect is a differencing disk. How can I know for certain, and if it is, then what parent VHD is it tied to?

  Read the article

• Iomega Home Media Network Hard Drive: Filesystem on the disk?

  - by JJarava

  Hi all! I've got to deal with a malfunctioning "Iomega Home Media Network Hard Drive", and I was wondering if anybody knew what file system format does Iomega use on the disk? I've been trying to find the answer online, but i've got nowhere, and checking an obviously malfucntioning unit is not going to give me any assurance. Thanks a lot

  Read the article

• How to increase disk space in Wubi (Ubuntu via windows)?

  - by Maleesh

  Hi all! I installed Ubuntu via Windows (7). I allocated only 8 GB space to it, but unfortunately now I want more space without reinstalling or creating another partition. Is there any way to increase the disk space in the Ubuntu ? Please help me to figure it out ? THanks... Regards Maleesh

  Read the article

• On Windows Server 2008, how to troubleshoot IIS hang when CPU, Disk IO are normal?

  - by frankadelic

  Can someone recommend a good strategy for troubleshooting IIS that is hanging on Windows 2008? Normally, I check the following in Process Explorer: CPU Disk I/O Context Switch Delta However, in certain situations all of these values are low and yet IIS is hung up. Is there anything in Process Monitor (sysinternals) that should raise a red flag?

  Read the article

• Can I create a bootable recovery partition on my hard disk having XP/Windows 7using freeware?

  - by Bill

  I have windows XP and windows 7. I want to create a recovery partition with a custom back up image on my hard disk. I know that Acronis can be used to create one but I want to do it using freeware. Any idea?

  Read the article

• Are there any windows applications that serve video from a local disk to h264 flash viewable through the browser on your local network?

  - by Matt

  Are there any windows applications that serve video from a server's local disk to h264 flash viewable through the browser on your local network? I'm thinking that on machine1, I'd have a folder with a ton of videos. This program would serve the videos on a website visible at http://machine1/myvids and that it would serve them in h264 and do the h264 conversion on the fly using the GPU. I know it's a lofty set of reqs but I'm wondering if anything like this is out there.

  Read the article

• Way to ecrypt files on hard disk so that no one could use them . with strong ecryption

  - by EugeneP

  Is there a ay to ecrypt files on hard disk under windows so that no one could use them . with strong ecryption say, before I leave my pc, I run this procedure and all needed files get ecrypted then I get back and decrypt those files

  Read the article

• Which is the Best hard disk imaging software? [closed]

  - by Shail

  Possible Duplicate: Windows backup by Imaging Which is the Best hard disk imaging software? Please Provide its pros and cons also.

  Read the article

• How to add a mirror-disk to my OpenSolaris?

  - by Sanoj

  I have a machine with two harddrives. I have installed OpenSolaris on one of them and now I want to add the other one as a mirror-drive in my zpool rpool. I guess I have to format the second disk first and then add it to the pool. How can I do this?

  Read the article

• Cannot install grub to RAID1 (md0)

  - by Andrew Answer

  I have a RAID1 array on my Ubuntu 12.04 LTS and my /sda HDD has been replaced several days ago. I use this commands to replace: # go to superuser sudo bash # see RAID state mdadm -Q -D /dev/md0 # State should be "clean, degraded" # remove broken disk from RAID mdadm /dev/md0 --fail /dev/sda1 mdadm /dev/md0 --remove /dev/sda1 # see partitions fdisk -l # shutdown computer shutdown now # physically replace old disk by new # start system again # see partitions fdisk -l # copy partitions from sdb to sda sfdisk -d /dev/sdb | sfdisk /dev/sda # recreate id for sda sfdisk --change-id /dev/sda 1 fd # add sda1 to RAID mdadm /dev/md0 --add /dev/sda1 # see RAID state mdadm -Q -D /dev/md0 # State should be "clean, degraded, recovering" # to see status you can use cat /proc/mdstat This is the my mdadm output after sync: /dev/md0: Version : 0.90 Creation Time : Wed Feb 17 16:18:25 2010 Raid Level : raid1 Array Size : 470455360 (448.66 GiB 481.75 GB) Used Dev Size : 470455360 (448.66 GiB 481.75 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Nov 1 15:19:31 2012 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 92e6ff4e:ed3ab4bf:fee5eb6c:d9b9cb11 Events : 0.11049560 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 17 1 active sync /dev/sdb1 After bebuilding completion "fdisk -l" says what I have not valid partition table /dev/md0. This is my fdisk -l output: Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0x00057d19 Device Boot Start End Blocks Id System /dev/sda1 * 63 940910984 470455461 fd Linux raid autodetect /dev/sda2 940910985 976768064 17928540 5 Extended /dev/sda5 940911048 976768064 17928508+ 82 Linux swap / Solaris Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0x000667ca Device Boot Start End Blocks Id System /dev/sdb1 * 63 940910984 470455461 fd Linux raid autodetect /dev/sdb2 940910985 976768064 17928540 5 Extended /dev/sdb5 940911048 976768064 17928508+ 82 Linux swap / Solaris Disk /dev/md0: 481.7 GB, 481746288640 bytes 2 heads, 4 sectors/track, 117613840 cylinders, total 940910720 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: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table This is my grub install output: root@answe:~# grub-install /dev/sda /usr/sbin/grub-setup: warn: Attempting to install GRUB to a disk with multiple partition labels or both partition label and filesystem. This is not supported yet.. /usr/sbin/grub-setup: error: embedding is not possible, but this is required for cross-disk install. root@answe:~# grub-install /dev/sdb Installation finished. No error reported. So 1) "update-grub" find only /sda and /sdb Linux, not /md0 2) "dpkg-reconfigure grub-pc" says "GRUB failed to install the following devices /dev/md0" I cannot load my system except from /sdb1 and /sda1, but in DEGRADED mode... Anybody can resolve this issue? I have big headache with this.

  Read the article

• how to make a partition which is in ext-2 , a writable disk?

  - by kasperasky

  i have debian system in which i have mounted the OS on a ext-3 system . I have got a partition of 60 gb , which is formatted to ext-2 partition . Even if I mount , i cant write anything into it . How can i change that ? How can I make the disk writable?

  Read the article

• Dedicated hard disk for Informix SE dbname.dbs files & dedicated ramdisk for /tmp files.

  - by Frank Computer

  INFORMIX-SE 7.2: I would like to dedicate a hard disk, exclusively for my dbname.dbs directory which holds all the .dat and .idx files, and create a ramdisk for my /tmp temporary files in order to improve performance. I would also like to strip down the OS from any unecessary files and processes to minimize overhead for my dedicated application. Is this a good idea and are there any roadmaps for accomplishing this?

  Read the article

• how to low-level format a hard disk using AIX?

  - by jhon

  Hi guys, I have a server with AIX 6.1 , I formated some hdisks using diag tool, but in some way some of its VGDA survived. how may I low-level format a hard disk using AIX? or how may I clear the VGDA of a specific hdisk? thanks

  Read the article

• how to low-level format a hard disk using AIX?

  - by jhon

  Hi guys, I have a server with AIX 6.1 , I formated some hdisks using diag tool, but in some way some of its VGDA survived. how may I low-level format a hard disk using AIX? or how may I clear the VGDA of a specific hdisk? thanks

  Read the article

• How do I stop Ubuntu from hanging due to processes going into 'disk sleep'?

  - by joeforker

  I'm using Ubuntu 9.04 64 bit on an AMD. It regularly hangs for a few minutes at a time when some of the processes's CPU usage % goes into 'disk sleep'. During that time I can't start new programs and most of the programs on the desktop become unresponsive. I would rather it didn't hang and my applications remained reliably responsive. Why does this happen and how can I stop it?

  Read the article

• How can i set up email alerts for disk failures on a windows server 2012 box?

  - by Leo

  I have a windows 2012 server with 3 storage spaces set up, each containing a mirrored pair of 2TB drives. What is the best way to set up alerting so that i receive an alert when a physical disk fails? Ideally i would like these alerts to be sent via email to a pre-defined address. The current server set up is as follows: Intel Core i7 2600k 3.4GHz Socket 1155 8MB Cache Asrock H77 PRO4/MVP Socket 1155 VGA DVI HDMI 7.1 Channel Audio ATX Motherboard 16GB RAM 1 x 60GB SSD (OS) 6 x 2TB SATA III 7200 HDD (DATA)

  Read the article

• "No bootable device -- insert boot disk and press any key" when trying to install Windows on my late

  - by thatotherguy

  OS X is 10.6.3. I create the partition with Boot Camp, insert the Windows 7 DVD, reboot, and that's what I get. I'm at loss. When I press alt/option to bring up the boot disk selection screen, the Boot Camp partition isn't an option. I don't know if this is normal or an indication something's not quite right.

  Read the article

• Changing hard disk with ssd, can I migrate contents so that I can switch drives without a hassle?

  - by Makach

  Changing hard disk with ssd, can I migrate contents so that I can switch drives without a hassle? For instance, keep my Windows configuration and installed programs and documents

  Read the article

• tell me how to corrupt my hard disk ???? please..

  - 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 Window Vista Premium. So please tell me the method which actually work & damage/corrupt my hd.

  Read the article

• Software Raid 10 corrupted superblock after dual disk failure, how do I recover it?

  - by Shoshomiga

  I have a software raid 10 with 6 x 2tb hard drives (raid 1 for /boot), ubuntu 10.04 is the os. I had a raid controller failure that put 2 drives out of sync, crashed the system and initially the os didnt boot up and went into initramfs instead, saying that drives were busy but I eventually managed to bring the raid up by stopping and assembling the drives. The os booted up and said that there were filesystem errors, I chose to ignore because it would remount the fs in read-only mode if there was a problem. Everything seemed to be working fine and the 2 drives started to rebuild, I was sure that it was a sata controller failure because I had dma errors in my log files. The os crashed soon after that with ext errors. Now its not bringing up the raid, it says that there is no superblock on /dev/sda2, even if I assemble manually with all the device names. I also did a memtest and changed the motherboard in addition to everything else. EDIT: This is my partition layout Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x0009c34a Device Boot Start End Blocks Id System /dev/sdb1 * 2048 511999 254976 83 Linux /dev/sdb2 512000 3904980991 1952234496 83 Linux /dev/sdb3 3904980992 3907028991 1024000 82 Linux swap / Solaris All 6 disks have the same layout, partition #1 is for raid 1 /boot, partition #2 is for raid 10 far plan, partition #3 is swap, but sda did not have swap enabled EDIT2: This is the output of mdadm --detail /dev/md1 Layout : near=1, far=2 Chunk Size : 64k UUID : a0feff55:2018f8ff:e368bf24:bd0fce41 Events : 0.3112126 Number Major Minor RaidDevice State 0 8 34 0 spare rebuilding /dev/sdc2 1 0 0 1 removed 2 8 18 2 active sync /dev/sdb2 3 8 50 3 active sync /dev/sdd2 4 0 0 4 removed 5 8 82 5 active sync /dev/sdf2 6 8 66 - spare /dev/sde2 EDIT3: I ran ddrescue and it has copied everything from sda except a single 4096 byte sector that I suspect is the raid superblock EDIT4: Here is some more info too long to fit here lshw: http://pastebin.com/2eKrh7nF mdadm --detail /dev/sd[abcdef]1 (raid1): http://pastebin.com/cgMQWerS mdadm --detail /dev/sd[abcdef]2 (raid10): http://pastebin.com/V5dtcGPF dumpe2fs of /dev/sda2 (from the ddrescue cloned drive): http://pastebin.com/sp0GYcJG I tried to recreate md1 based on this info with the command mdadm --create /dev/md1 -v --assume-clean --level=10 --raid-devices=6 --chunk=64K --layout=f2 /dev/sda2 missing /dev/sdc2 /dev/sdd2 missing /dev/sdf2 But I can't mount it, I also tried to recreate it based on my initial mdadm --detail /dev/md1 but it still doesn't mount It also warns me that /dev/sda2 is an ext2fs file system but I guess its because of ddrescue

  Read the article

• how to low-level format a hard disk with AIX?

  - by jhon

  Hi guys, I have a server with AIX 6.1 , I formated some hdisks using diag tool, but in some way some of its VGDA survived. how may I low-level format a hard disk using AIX? or how may I clear the VGDA of a specific hdisk? thanks

  Read the article

< Previous Page | 70 71 72 73 74 75 76 77 78 79 80 81  | Next Page >