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An SD (SDHC) card installed in an HP ProLiant DL380p Gen8 server running VMware ESXi just failed :(

Here Is Another Reason Google Continues To Shun SD Cards - Multiuser Support. Some say due to a possible patent. Adding the complexity of multiple users to something as portable as an SD.

I encountered some ominous looking messages on the vCenter console and in the HP ProLiant ILO event log...

Lost connectivity to the device ... backing the boot filesystem. As a result, host configuration changes will not be saved to persistent storage.

Embedded Flash/SD-CARD: Error writing media 0, physical block 848880: Stack Exception.

VMware advocates the use of USB and SD (SDHC) boot devices for ESXi. It was one of the main reasons the smaller footprint ESXi was developed (versus the older ESX). I've spent much time highlighting the differences between ESXi's installable and embedded modes to coworkers and clients. However, these failures do seem to happen. In this case, this is my third instance.

Luckily, this is a vSphere cluster with SAN storage. What steps should be taken to remediate this failure?

ewwhiteewwhite

4 Answers

Here's the process I used to resolve this:

VMware ESXi can be installed in an embedded mode or an installable mode. As outlined here, the installation mode is determined by the destination media and the size of the volume available to the ESXi installer.

• USB, SDHC or any device less than 5GB in size:Embedded
• Hard drives/volumes greater than or equal to 5GB in size:Installable

One of the unique attributes of running ESXi in embedded mode is that the OS is loaded into RAM and only touches the USB/SD device hourly during normal operation. In my situation, the system continued to operate, even with a failed SDHC device.

The error message I received in the vCenter interface indicated that configuration changes would not be saved, but the cluster was still usable. I left the system in this state for several days until I could get to the datacenter to replace the SD card.

With regard to steps to take following a failure of a USB or SD device, it is important to extract and save a copy of your host's settings!!

This is easily accomplished via PowerCLI or the vSphere CLI. I used PowerCLI running from the vCenter server:

• Following that, I evacuated all virtual machines from the affected host and placed it in maintenance mode.
• The host was then shut down, the SDHC card replaced with a new device, and I installed ESXi again.
• Once the host was up again with a fresh ESXi install, I made the bare minimum configuration changes needed to make the host visible on the network; set IP information, vlan info and password.
• I reloaded the saved configuration to the host via PowerCLI...

For this step, I used:

Restoring the configuration forces a host reboot. Once up again, I was able to issue a reconnect to rejoin the host in vCenter and exit maintenance mode.

If PowerCLI not available, the ESXi shell commands look like:

This produces a web link that you'll be able to browse to and download a tarball of the host's configuration.

You can SCP a configuration file to a host and use the following to restore the settings.

That's all!

ewwhiteewwhite

KB article: http://kb.vmware.com/selfservice/documentLinkInt.do?micrositeID=&popup=true&languageId=&externalID=2004784

Note: In the event that your original SD flash card or USB drive fails, these steps can be used in a disaster recovery capacity to get a fully functional ESXi host running as quickly as possible on a replacement USB drive or SD flash card.

Disaster Recovery Scenario

If you have a local datastore containing production information and have completed the installation on a replacement USB flash drive or SD flash card in a disaster recovery scenario, you may be required perform these additional steps:

1. Connect to the ESXi host using the vSphere Client or add the ESXi host to an existing vCenter Server implementation.
2. Click the host.
3. Click the Configuration tab.
4. Click Storage.
5. Click Rescan to ensure you can see all datastores.
6. Browse the datastore and register any virtual machines that are located on the datastores.

Michael Hampton♦TheCleanerTheCleaner

I'd say just reinstall ESXi fresh on a new card, it's not worth your time or effort to try to preserve the potentially corrupt data on the current card.

Shane Madden♦Shane Madden

One of my hosts showed the same 'Lost connectivity' error. I googled and found this post. So I tried to backup the configuration with PowerCLI and vCLI as suggested. Backup came back with 'Internal error'. Called VMWare. The answer is that when the SD failed, you won't be able to backup your configuration because the backup command can only pull the configuration from the SD card.

Not the answer you're looking for? Browse other questions tagged vmware-esxihardwarehphp-proliant or ask your own question.

Having a tiny memory card with your camera or phone is great. All your beautiful photographs are stored digitally on a card almost as small as your thumbnail.

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But now the card shows an error in your camera, or in a computer when it’s connected. Are my photos and videos gone? You wondered.

You are not alone…

When I had my first Samsung camera, I suffered a similar situation, my heart almost broke. 2GB photos in the SD card became inaccessible all of a sudden.

Fortunately, I was able to fix that card error with the help of fellow photographers active online. I appreciate enough about how helpful they were. My journey was not that smooth, though. It took me tons of effort to find fixes that actually worked out.

That’s why I decided to create this guide – breaking down all types of possible card errors (in different chapters), with relevant repair solutions from authority resources you can use right away. Don’t forget to check out the bonus tips on how to avoid card errors, contributed by experienced photographers.

This guide should apply to many types of memory cards available in the market: including Secure Digital (microSD, miniSD, SDHC), CompactFlash (CF), memory stick, etc. manufactured by SanDisk, Kingston, Transcend, Lexar, Samsung, etc.

Chapter 1: Memory Card Locked or Write Protected

Are you getting the message “SD card locked” on your digital camera? It won’t let you delete or take pictures. Or when you attempt to transfer files between the card and your computer, the computer says, “The disk is write-protected?” Then you probably forgot to turn off the write protect lock. These posts show how to unlock it, or fix it if your memory card switch is broken.

• How To Unlock A Memory Card Canon Camera [Video] | YouTube
• Fixing The “Memory Card Write Protected” Error | Steves-Digicams
• How to Fix a Broken Lock on SD Cards | WikiHow

Chapter 2: Memory Card Not Recognized

If your media card can not be detected by a PC or Mac when connected, or if it simply won’t read in your digital camera; then check out the following resources to find the possibles and fixes. Note: it’s not guaranteed that the tricks below will make your card work again because there are many possible reasons that could cause this situation. If the card is physically damaged, for instance, chances to get it fixed are low.

• A Secure Digital (SD) Card May not be Recognized on Windows 7 | Microsoft Support
• GoPro No SD Error – Quick Fix for Hero 5 4 3+ 3 2 | YouTube
• About the SD and SDXC Card Slot | Apple Support
• My SD Card does not Work or Cannot be Read | Computer Hope
• How to Get Your Digital Camera to Read Your Micro SD Card [Video] | YouTube
• How do You Recover Data from a microSD Card that Cannot be Read? | How-To Geek

Download Failed Due To Missing Sd Card To Pc

Chapter 3: Memory Card Keeps Asking to Format

When you plug the card into the port or adapter of your computer, a message similar to this “The disk is not formatted, do you want to format it now?” shows up, even worse you tried to format it another message pops up saying “operation failure” (or “the disk cannot be formatted” and won’t allow you to do so. Mostly likely your card is corrupted, other causes may include system incompatibilities, lack of device drivers. See the following forum discussions and learn how to handle it properly.

• “You Need to Format the Disk in Drive”Error Message | SanDisk
• Fix Damaged MicroSD Card That cannot be Formatted | SuperUser
• Error Message “The disk in drive is not formatted” | Microsoft Support

Chapter 4: Files Hidden or Became Shortcuts

You try to access those photos or videos stored on your camera card. Once you connect the card to a computer, only to find that all the pictures and folders are now missing, or have become shortcuts (with a few KBs in size the real size could be MBs or GBs). If you encounter this issue, your flash card has probably infected with virus or malware. Here are some posts with step-by-step fix instructions.

• Virus Hiding Folders/Files in Memory Card | CCM
• How to Recover Hidden Files and Folders from Memory Card | Microsoft Answers
• What is a Hidden File & Why Are Some Files Hidden? | Lifewire

Chapter 5: Forgot Memory Card Password

Many smartphones, particularly Android-based, allow users to create a password for the microSD card. It could be a hassle if you set a password but forgot it later on, especially when you need it badly. Fortunately, it’s not rocket science to recover or remove that password. These resources will be of help to you.

• MICRO SD card – Lost password | CCM
• Forgot Your Memory Card Password? Here is What You can Do | Microsoft Answers
• How to Recover Lost Password of Micro SD Card | Geek Dashboard

Chapter 6: Deleted Photos, or Formatted Card by Accident

We all make mistakes. With computers, most times it’s irreversible. However, it’s not necessarily the case when you lose previous pictures due to accidental deletion or formatting the card. Because the way file system of a storage card deals with data, technically, it’s often quite possible to recover those lost files with the help of a third-party data recovery software.

• 15 Free Data Recovery Software | SoftwareHow
• PhotoRec, Digital Picture and File Recovery | CGSecurity
• How to Recover Deleted Photos from a Memory Card | CNET
• Best Free Photo Recovery Software (Really, No-Kidding!) | Camera Repair Blogspot

Chapter 7: Memory Card Not Enough Space

It’s normal that the actual space available on a new card is a little bit less than what is advertised. For example, your SanDisk Extreme Pro may actually show 29.8 GB usable when it’s labeled 32 GB. But if it only shows 40 MB available and you didn’t have many writing activities, then that’s definitely abnormal. Try the following resources to restore the lost space.

• Memory Cards Have “less space” than Advertised, here is Why | DIYPhotography
• SD Card Says It’s Full Even Though It’s not: HOW TO FIX IT | YouTube
• Using SD Formatter Tool to Restore Full Capacity on SDHC/SDXC Cards | SanDisk
• How to Restore an SD Card’s Full Capacity | PC Advisor

Chapter 8: Unable to Format Memory Card

If you are experiencing problems formatting a card either on your digital camera or on a Windows/Mac computer, use the following as your go-to guide. Note: sometimes you have to use a third-party formatting tool (e.g. SD Formatter 4.0) instead of the default formatting option in your computer.

• Cannot Read SanDisk Memory Card on Canon 600D: Err 70 | StackExchange
• SD Formatter 5.0 for SD/SDHC/SDXC | SD Association
• How to Repair a Corrupted Memory Card | WikiHow
• How to Format SD Card from Your Camera [Video] | YouTube

Chapter 9: Other Camera Errors

If you are encountering other types of errors with your digital cameras (not necessarily related to memory cards), check the links below to match your problems and find fix solutions.

• Canon ERR99: What It Means and How to Fix It | Improve Photography
• Fix Blinking “Err” on New Nikon DSLR cameras | Photography Life
• How to Fix Lens Communication Error on Sony Cameras | YouTube
• Fixing a Lens Error (Stuck or Jammed Lens) on a Digital Camera | DIY Camera Repair

Chapter 10: Helpful Memory Card Resources

The best way to avoid flash card issues is to have a good using habit. In addition, make multiple copies of the data on a regular basis. All those will help you encounter fewer unexpected issues or data loss disasters. Here’re some of my favorite articles to help you Go PRO!

• Memory Card Buying Guide: What to Look for? | BestBuy
• 13 Tips for Using and Caring for Memory Cards | Digital Photography School
• How to Properly Use and Care for Memory Cards | Photography Life
• Card Readers and Memory Cards 101 | Top Ten Reviews
• 11 Tips for Avoiding Memory Card Problems | Photo Naturalist

Bonus: Useful Tips from Pro Photographers

Huge thanks to all of you who joined the discussion and contributed your thoughts on how to mitigate risk of memory card issues! Names are in no particular order.

Ernst Zimmer (Digital Media Specialist)

The lesson is always test a new SD card first before putting it to serious use.

Louisa Páez Michelin (Fine Art Photographer)

I also found stopping before the card is completely full to help.

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Jennifer Findlay (Glamour Photographer)

Make sure you format the card on your camera. Not good enough to format it on your computer.

Ed Wolkis (Photographer & Author)

Don’t make card changes on the computer then use the card in the camera without re-formatting.

Ian Andrews (Art Editor & Photographer)

Always back up images as quickly as possible on computer, then reformat card on camera.

Cedric Baker (Class Leader)

Never format your memory cards on a computer as it increases the risk of corrupting the card.

Foto-ish Studio (Owner)

Cards have a lifespan, even if they are given a lifetime warranty, do replace them after some time.

David Hammant (Partner at DJHImages)

Download Failed Due To Missing Sd Cards

Use a number of smaller capacity cards (relevant to the size of the files you are generating), and in camera format the cards you use immediately prior to a shoot.

What’s your favorite guide?

Download Failed Due To Missing Sd Card To Computer

There are countless perspectives and ideas on how to fix card issues. Did the above resources help you out? Let me know what you think. Or did you run into a problem, or found a solution, that I’m yet to cover in the above chapters?

Feel free to leave me a comment below, I’d be happy to add to this resource guide.

Pictures Missing From Sd Card

Cover image credit: SmartPhotoCourses