Question about HP C7438A (Refurbished) DAT Tape Drive

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Tape drive does not recognize or eject tape

Mt -f /dev/nst0 stat
SCSI 2 tape drive:
File number=-1, block number=-1, partition=0.
Tape block size 0 bytes. Density code 0x0 (default).
Soft error count since last status=0
General status bits on (50000):
 DR_OPEN IM_REP_EN

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Yeah the Ultrium 4 tape drives only r/w to ULT3 and ULT4 tapes.

We put a Ultrium 2 tape in our 4 drive and it seems to be locked permanently.

Posted on Jan 30, 2008

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Is it possible to access the whole C drive when using Ubuntu?


What Can Be Mounted

The most common thing to be mounted is a hard drive partition. Hard drives are kept in /dev and have different names depending on what type of drive they are. IDE/ATA drives are labelled as /dev/hda, /dev/hdb, /dev/hdc and /dev/hdd (since a PC's IDE interfaces can only handle 4 devices at a time). Note that these can be devices such as IDE/ATA CDROMS, Compact Flash to IDE converters, and some special floppy drives (although they tend to appear mainly in laptops). For SCSI devices the labels are /dev/sda, /dev/sdb, /dev/sdc, /dev/sdd, /dev/sde, /dev/sdf, /dev/sdg, /dev/sdh and /dev/sdi (since a SCSI chain can contain up to nine devices). Other types of drive, such as USB, SATA, etc. are mapped to these SCSI devices by Linux. Therefore SATA and USB drives are labelled as /dev/sdX where X is a letter, starting at "a".

Since these are literally the devices you can issue a command such as:
sudo eject /dev/hdc

If /dev/hdc is a CD drive then it will eject.

In the case of hard drives, there is another abstraction. A hard drive (and many devices such as USB "sticks" which act like hard drives) can be partitioned to allow many filesystems to be stored on them. This means that the filesystems themselves are accessible via the partition labels, such as /dev/hda1 (the first partition on /dev/hda). This means that we finally know about something we can mount, a partition, since it contains a filesystem.

Another physical filesystem which can be mounted is the ISO9660 filesystem used on CDROMs. Since there is only ever one CD in a CD drive there is no point creating /dev/hdc1 (where /dev/hdc is a CDROM drive) since there is only one filesystem on it. That means that you can mount CD drive devices explicitly, so if /dev/hdc is a CDROM drive then it is possible to mount /dev/hdc if there is a disc in it.

Floppy disks only contain one filesystem, and are labeled as /dev/fd0 for the first drive, /dev/fd1 for the second drive, etc. So now we know three things which can be mounted.

Devices like USB sticks are treated like hard drives (so /dev/sda1, for example, may contain a filesystem) and so are iPods (although I think the main data on an iPod is stored on the second partition)

Mounting is not restricted to physical devices. If you have a filesystem "image" (which IS a filesystem, whether an exact copy of an existing filesystem, or a filesystem created specifically for that file) then you can mount that through the use of a fake device called the "loopback device"


How To Mount/Unmount Filesystems


Unmounting

Firstly I will tell you how to unmount any filesystem you mount after trying these commands. Unmounting is done through the "umount" command, which can be given a device or a mount point so:
sudo umount /mnt
sudo umount /dev/hda1

Would both unmount the filesystem on /dev/hda1 if it is mounted on /mnt.

Remember that a filesystem cannot be in use when it is unmounted, otherwise umount will give an error. If you know it is safe to unmount a filesystem you can use:
sudo umount -l /mountpoint

Sep 23, 2011 | Microsoft Computers & Internet

1 Answer

I need a user/operaing manual for a Pioneer PD F19 CD Player


yes

What Can Be Mounted

The most common thing to be mounted is a hard drive partition. Hard drives are kept in /dev and have different names depending on what type of drive they are. IDE/ATA drives are labelled as /dev/hda, /dev/hdb, /dev/hdc and /dev/hdd (since a PC's IDE interfaces can only handle 4 devices at a time). Note that these can be devices such as IDE/ATA CDROMS, Compact Flash to IDE converters, and some special floppy drives (although they tend to appear mainly in laptops). For SCSI devices the labels are /dev/sda, /dev/sdb, /dev/sdc, /dev/sdd, /dev/sde, /dev/sdf, /dev/sdg, /dev/sdh and /dev/sdi (since a SCSI chain can contain up to nine devices). Other types of drive, such as USB, SATA, etc. are mapped to these SCSI devices by Linux. Therefore SATA and USB drives are labelled as /dev/sdX where X is a letter, starting at "a".

Since these are literally the devices you can issue a command such as:
sudo eject /dev/hdc

If /dev/hdc is a CD drive then it will eject.

In the case of hard drives, there is another abstraction. A hard drive (and many devices such as USB "sticks" which act like hard drives) can be partitioned to allow many filesystems to be stored on them. This means that the filesystems themselves are accessible via the partition labels, such as /dev/hda1 (the first partition on /dev/hda). This means that we finally know about something we can mount, a partition, since it contains a filesystem.

Another physical filesystem which can be mounted is the ISO9660 filesystem used on CDROMs. Since there is only ever one CD in a CD drive there is no point creating /dev/hdc1 (where /dev/hdc is a CDROM drive) since there is only one filesystem on it. That means that you can mount CD drive devices explicitly, so if /dev/hdc is a CDROM drive then it is possible to mount /dev/hdc if there is a disc in it.

Floppy disks only contain one filesystem, and are labeled as /dev/fd0 for the first drive, /dev/fd1 for the second drive, etc. So now we know three things which can be mounted.

Devices like USB sticks are treated like hard drives (so /dev/sda1, for example, may contain a filesystem) and so are iPods (although I think the main data on an iPod is stored on the second partition)

Mounting is not restricted to physical devices. If you have a filesystem "image" (which IS a filesystem, whether an exact copy of an existing filesystem, or a filesystem created specifically for that file) then you can mount that through the use of a fake device called the "loopback device"


How To Mount/Unmount Filesystems


Unmounting

Firstly I will tell you how to unmount any filesystem you mount after trying these commands. Unmounting is done through the "umount" command, which can be given a device or a mount point so:
sudo umount /mnt
sudo umount /dev/hda1

Would both unmount the filesystem on /dev/hda1 if it is mounted on /mnt.

Remember that a filesystem cannot be in use when it is unmounted, otherwise umount will give an error. If you know it is safe to unmount a filesystem you can use:
sudo umount -l /mountpoint

Sep 23, 2011 | Cameras

1 Answer

Item: DLT tape drive ( DLT8000 SCSI LVD Loader For Scalar 100 )Problem: Eject spring not fully loaded, as the result pick up tape unable to reach to pick. Please advice.


Look at this document to see if the interposer mechanism is holding the tape from ejecting. The solenoid that energizes to tape insertion or ejection sometimes relaxes and you have to move it manually out of the way to recover the tape.

http://www.filibeto.org/sun/lib/hardware/storedge/tape/l280/pin-024.pdf

Jul 28, 2011 | HP DLT8000 HVD/SCSI Loader (c7200-69978)...

2 Answers

Tape not ejecting from drive after 60 secs pressing eject button. I can hear it 'clicking' but no attempt to eject the tape is made. I would be very grateful for some advice regarding what I might do next.


can you detail the model No or compaq spares No for the drive - the clicking makes it sound to me like a DAT but unable to proceed without more info.

If it is a DAT (compaq used both Sony and HP mechs) try disconnecting the scsi cable from the scsi card, rebooting the drive and trying again.

If that doesnt work try a 00pt screwdriver in the manual eject point of the drive and unload manually (about 1000 turns!)

Failing that try www.tape-drive-repair.com as they are pretty good price wise for a repair / exchange

Aug 14, 2009 | Computers & Internet

1 Answer

Long periods of hard drive activity


Most likely, it could be the amount of ram you have in your computer. If your running low on ram and it is using the virtual memory your computer can be running all the time causing a slow down in whatever you do. Check to see how much ram you have :)

Mar 24, 2009 | Computers & Internet

1 Answer

Burn fail or cd skip


Kind of sounds that way. They are pretty inexpensive now days, and simple to install.

Good luck

Mar 17, 2009 | Gateway M680X PC Notebook

1 Answer

How do i use ubuntu fixing ntfs file system?


Use apt-get from the terminal to install the ntfsprogs package - sudo apt-get install ntfsprogs

Then you can use the tool ntfsfix from the terminal to attempt to repair a ntfs partition.

Example:
* unmount the drive if it's mounted already
sudo umount /dev/sda1 - read below for device naming info
then type: sudo ntfsfix /dev/sda1

Note:
A typical home pc or laptop has 2 or 4 IDE channels as follows:
  • ide0 = primary
  • ide1 = secondary
  • ide2 = tertiary
  • ide3 = quaternary
For example:
  • ide0 = primary master = hda
  • ide1 = primary slave = hdb
  • ide2 = secondary master = hdc
  • ide3 = secondary slave = hdd
  • sata0 = 1st sata device = sda
  • sata1 = 2nd sata device = sdb
and so on...
SCSI & SATA devices are listed as devices sda, sdb, sdc, sdd, sde, sdf, etc. in the /dev directory. Similarly, partitions on these disks can range from 1 to 16 and are also in the /dev directory.
Now each hard drive has 4 primary partitions (limit of PC x86 architecture). First partition is denoted by number 1. For example:
  • First partition : /dev/hda1
  • Second partition : /dev/hda2
  • Third partition : /dev/hda3
  • Fourth partition : /dev/hda4
  • sata0 device, 1st partition: /dev/sda1
  • sata1 device, 1st partition: /dev/sdb1
And so on.
You can run command fdisk -l (lowercase L) to display a list of partitions:

WARNING! These examples may result in data loss. Use fdisk command with caution as it can manipulate / overwrite your partition table.

Aug 05, 2008 | Canonical Ltd. Ubuntu

1 Answer

My Storegtek L80 can't recognize all of its tape drives


That thing required a SCSI terminator pack doesn't it.

If so, is it working properly.

I've had those things go out on me before leaving me to pull my hair out many times.

Jun 14, 2008 | Storagetek L80 DLT Tape Drive

1 Answer

Scsi tape drive


Hello Rivcr, 1. Check for a terminator on the back of the scsi unit. 2. Make sure you have power. 3. make sure power switch is on. 4. Select a different scsi id number, not 0 or 1 or 7. Does this help?

May 02, 2008 | Computers & Internet

1 Answer

JFS224 change drive order


You need to get into bios to change the boot order. You can usually get into bios by tapping F12, esc, or whatever depending on who wrote your bios. Once you get into bios, you should see something like change boot order somewhere. If you don't know where it is then just keep scanning each page and you will find it. It will be called something "boot order". Use the directions on screen to change it to whatever drive you desire and you should be good to go. If you can't do it then write back and let me know.

Feb 01, 2008 | Chaparral Technologies CHAPARRAL - JFS224

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