Replacement storage path for iPod 4G Monochrome. Use it for failed hard-drive behavior, restore trouble, or storage upgrades after the battery is stable and the drive cable or adapter seating has been checked.
Product Overview
This hard drive listing covers Replacement Hard Drive (40GB) and its own connector path on the iPod 4th Generation (Monochrome).
Use Part Details for the confirmed part-number reference. Use the Compatible Variants table below to confirm capacity, color, case, or order-number fitment.
Choose this part when your iPod shows Sad iPod Icon, Folder Icon, Clicking Noise, or Red X Icon; the checks below help confirm the right part before you order.
Storage failure symptoms such as a sad iPod, folder icon, restore loop, or the audible click of death should still be checked against the drive cable and connector seating before replacing the drive.
Choose Your Option
This part comes in multiple variants. Confirm your iPod's capacity, case depth, and order number before ordering.
Use this linked storage option only for 20GB thin-case iPods and the order numbers shown here.
View this option →For thick 40GB A1059 4G Monochrome builds only. Match 8mm 50-pin ATA/PATA drive height and order number before ordering.
You're viewing this optionWhat Is Included
Condition: Used factory-original part. Quantity and exclusions: The listed part, set, pair, or configuration above is supplied with exactly one plastic pry tool. No other parts, tools, adhesives, or materials are included unless they are explicitly listed above.
Quick Buying Check
Buy this when
- Hard Drive Failure: Use the drive check when disk mode, restore behavior, clicking, sad-iPod, red-X, or folder symptoms remain after cable seating and battery stability checks.
Diagnose first when
- Confirm thin or thick case thickness before ordering battery, hard drive, cable, or rear case parts.
- Confirm the capacity match before ordering: 40GB.
Other Symptoms That May Involve This Part
| Symptom | What it means & what to check |
|---|---|
| boot loop, not recognized | Treat this as a restore or storage-path symptom, not proof of a bad drive; the drive becomes more likely when cable, USB, formatting, and restore checks still lead back to storage warnings. |
| frozen, skipping | Playback skips, freezes, or corrupted data become drive clues when they happen during storage access or sync. |
| grinding | Mechanical clicking or grinding points toward the drive after the hard-drive cable has been reseated and checked. |
Specifications & Fitment
Part Details
| Detail | Value |
|---|---|
| Model Number | A1059 |
| EMC | EMC 1995 |
| Condition | Used — factory original Apple part. Normal cosmetic wear expected. |
| Drive Model | MK4004GAH |
| Capacity | 40GB |
| Form Factor | 1.8" 50-pin ATA/PATA Toshiba/iPod form factor |
| RPM | 4200 |
| Manufacturer | Toshiba |
| Interface | 50-pin Toshiba/iPod ATA/PATA |
| Drive Height | 8mm |
| Platters | 2 |
| Height | 8mm |
Compatible Variants
| Order Number | Capacity | Color | Case | Compatible | Notes |
|---|---|---|---|---|---|
| M9268LL/A | 40GB | White | thick | Yes | — |
| PE436A | 40GB | White (HP) | thick | Yes— compatible | Stock match |
| M9787LL/A | 20GB | Black/Red (U2) | thin | No— wrong case depth | Owner-verified: 20GB thin A1059 builds Use Replacement Hard Drive (20GB) instead. |
| M9282LL/A | 20GB | White | thin | No— wrong case depth | Owner-verified: 20GB thin A1059 builds Use Replacement Hard Drive (20GB) instead. |
| PE435A | 20GB | White (HP) | thin | No— wrong case depth | Owner-verified: 20GB thin A1059 builds Use Replacement Hard Drive (20GB) instead. |
is not compatible with
- 20GB thin A1059 builds
- A1099 Photo/Color models
- iPod Mini and later connector storage
Diagnostic Failure Cards
Use these model-specific failure cards to decide whether this drive is the right part, a nearby part needs checking first, or escalation makes more sense after simpler checks.
| Symptom | What it means & what to check |
|---|---|
| Symptom remains after basic checks |
What you may see: The iPod still points back to Replacement Hard Drive (40GB) after cable seating, battery stability, and nearby connector checks. Check first: Retest with known-good cables or adjacent parts where practical before ordering. Check next: A nearby cable, connector, battery, storage device, display path, audio path, or board path can mimic a bad drive. |
| Symptom changes when touched or reseated |
What you may see: The symptom changes after moving the part, reseating a cable, or applying light pressure near the connector path. Check first: Inspect the connector, latch, flex, solder joints, and nearby board area for damage or corrosion. Check next: This can still be a connection issue rather than a failed drive alone. |
| Problem began after another repair |
What you may see: The issue started immediately after opening the iPod, replacing another part, or disturbing an internal cable. Check first: Reopen only as far as needed and inspect the exact area touched during the previous repair. Check next: Post-repair symptoms often trace to seating, latch, screw, or cable issues before Replacement Hard Drive (40GB) itself is confirmed bad. |
| Sad iPod, clicking, restore, or storage trouble |
What you may notice
Diagnose first when
Similar issues to separate
When this drive fits
Check another part first
Repair or replacement paths
|
| Ribbon, connector, or ground-path checks |
What you may notice
Diagnose first when
Similar issues to separate
Check another part first
|
| Symptoms changed after repair or reassembly |
What you may notice
Diagnose first when
Similar issues to separate
When this drive fits
Check another part first
Repair or replacement paths
|
| Fitment and inspection notes |
|
Repair considerations
Run these checks before replacing the drive — they confirm the drive is the right fix and not a nearby fault:
- Restore/format steps can erase data or indicate storage failure
- Treat ribbons, tabs, and connectors as fragile
- Use reset, Disk Mode, restore, or iTunes/Finder behavior as a software/storage check
- Inspect connector latch, socket, or clamp condition
- Reseat or inspect ribbon cable and connector seating
- Check drive noise, SMART/data signs, or storage recognition
Do Not Buy / Problems This Drive Does Not Fix
| Situation | Start here instead |
|---|---|
| Variant or capacity does not match this listing | Use the Replacement Hard Drive (20GB) listing instead. |
| A symptom points to a different part | Start with the neighboring part or diagnostic that matches your symptom (storage, cable, battery, screen, audio, or board) before buying this part. |
| You see a folder icon, clicking noise, or restore failure | Check the drive or flash media, storage cable, adapter seating, formatting, and restore path before replacing any part. |
| Charging, swelling, runtime, or power is the primary problem | Start with battery health, charger behavior, and spin-up load before buying storage. |
| Recent service or connector disturbance is the main clue | Inspect and reseat the storage cable and board connector before replacing storage. |
Compatible & Upgrade Drives
These additional 1.8-inch drives are documented as compatible replacements or higher-capacity upgrades for this iPod and accept a standard restore:
- MK2006GAL — 20 GB
- MK4006GAH — 40 GB — 8mm drive — fits the thick (40GB) shell only; is not compatible with the 5mm thin 20GB shell.
- MK2431GAH — 240 GB — Mechanical HDD (Toshiba 240GB, 8mm dual-platter, ZIF interface) — NOT an SSD. Requires a ZIF-to-50-pin adapter and the thick 40GB shell; not a standard-restore drive for this model.
- HS161JQ — 160 GB — Mechanical HDD (Samsung 160GB) — NOT an SSD. CE-ATA-era drive; no verified adapter path to this model’s 50-pin PATA connector — do not offer as a drop-in.
Install Overview
Before You Start
Turn Hold off, use the reset sequence for this generation, and confirm the model and variant before opening the iPod.
Treat case opening as the highest handling risk. Work around the seams gently and stop if the shell, clips, or internal stack resist.
Do not pull the halves apart or side-load board sockets. Reseat nearby ribbons and connectors before blaming a replacement drive.
Verify the exact generation, capacity/thickness variant, connector, and part listing before ordering; similar-looking iPod parts are not always interchangeable.
Disassembly Guide
Disassembly guide summary: iPod 4th Generation or Photo Hard Drive Replacement.
Show all 5 installation steps
Before you open the iPod, confirm that the hold switch is in the locked setting. The orange bar should be showing, indicating hold is active.
Move an opening pick as far as possible into the gap between the plastic front and the metal back panel, on the right edge of the iPod. You may have to rock the pick back and forth to move it in farther. With the opening pick, lever up against the plastic front panel and release 5 retaining tabs. Slide the pick along the iPod edge and keep levering gently until the remaining retaining tabs release. In this step, after all five tabs along the right edge are free, the case should easily open.
The iPod case is now open, but do not separate the two halves yet. An orange ribbon cable still connects the headphone jack to the logic board. With the dock connector edge at the top, open the case like a book and set the rear panel beside the iPod front half.
With a plastic tool or your fingernails, carefully detach the orange headphone jack cable. Make sure to draw straight up on the connector, not the cable itself. This fragile ribbon cable can stay connected for a battery replacement. Prop and tape the rear case against a box so the headphone jack remains connected to the motherboard without straining its cable while you work.
Grasp the hard drive with one hand and carefully detach the orange ribbon cable from the hard drive with your other hand. In this step, if the cable doesn't come free easily, it may be useful to gently wiggle the cable from side to side.
Product-specific placement, reassembly, and check
- Prepare and access. Confirm the exact model and listing fit first. Use the existing steps as a disassembly guide, gather the specified tools, disconnect power where applicable, and keep screws and cable positions organized.
- Place Replacement Hard Drive (40GB). Seat the exact storage part, cable, or adapter in the original storage path and match its orientation, case depth, and supported configuration.
- Reassemble without force. Reverse only the access steps needed for this repair, keep cables clear of case edges and screw posts, and close clips in stages.
- Validate before final closure. Before final closure, verify detection, Disk Mode or restore behavior as applicable, and stable startup without repeat clicking or a loose connection.
Stop condition: Stop if a connector, latch, screw, clip, housing edge, or the replacement part resists normal alignment. Recheck model fit, orientation, cable routing, and trapped hardware instead of forcing it.
After This Repair
| Check | What to do |
|---|---|
| Restore and sync | Confirm the iPod restores cleanly and mounts with the computer and cable you plan to use. |
| Check under load | Listen for repeated spin-up, adapter resets, or restore loops that can point back to cable seating, formatting, or battery stability. |
| Still not working? | Reseat the storage cable and verify formatting or adapter setup before blaming the logic board. |
Consider Flash Storage
Instead of replacing the mechanical hard drive, this model can also use a flash-storage upgrade path for better shock resistance and lower power draw.
Format note: SDXC cards (64GB+) must be pre-formatted to FAT32 — default exFAT not supported by original firmware
Upgrade option: flash mod kit for this iPod
Worth Knowing
- Uses PATA interface — 50-pin Toshiba/iPod ATA/PATA connector
- 8mm height — fits thick case only
- Upgrade options reported by the repair community to fit the 8mm bay (thick 40GB shell only): MK6006GAH (60GB), MK8007GAH (80GB) — not owner-verified fitment.
- Consider flash adapter IDE-to-SD adapter as a modern alternative to mechanical HDD replacement.
Folder Icon: What Owners Describe
On the iPod 4th Generation (monochrome), Folder Icon can describe more than one observable problem. These paraphrased owner reports are anecdotal starting points for diagnosis, not proof that any single part failed.
Anecdotal owner reports (not a guarantee or authoritative proof): - One owner reported that the folder-error icon remained after a drive adapter and logic-board replacement, and the computer still did not detect the iPod.
Owners searching for this describe it as: iPod 4th Generation (monochrome) Folder Icon, iPod folder error icon, iPod folder warning.
Stuck On Apple Logo: What Owners Describe
On the iPod 4th Generation (monochrome), Stuck On Apple Logo can describe more than one observable problem. These paraphrased owner reports are anecdotal starting points for diagnosis, not proof that any single part failed.
- Another owner reported that the iPod remained at the Apple logo after a battery replacement and would not enter disk mode.
Owners searching for this describe it as: iPod 4th Generation (monochrome) Stuck On Apple Logo, iPod stuck on Apple logo, iPod Apple logo freeze.
What Owners Report
These are anecdotal owner reports, not guarantees or authoritative proof that a particular part will fix a symptom. Use them as a troubleshooting starting point: confirm the symptom, run the quick checks, then match the fix.
Drive replacement and upgrades — interface and thickness first
Symptoms. Failed drive and the question of what actually fits: will a smaller drive substitute in an upgraded unit; can a drive move between this model and its color-screen sibling; the board-side ribbon socket cracked and needs a name; will a ZIF-drive-to-pins adapter stack fit inside.
Quick diagnosis.
- Confirm the interface before ordering anything: the drive side on this model is a 50-pin ATA pin interface, friction-fit — NOT a ZIF drive socket. ZIF-interface drives and adapter stacks routinely fail to fit in length as well as thickness. ZIF language on this model belongs only to the board-side ribbon latch, where the 632-0259-A cable lands.
- Match the drive to the case class: the thin 20GB build takes 5mm-height drives; the thick 40GB build takes 8mm. Measure and compare exact drive dimensions against the one you removed before purchase.
Fixes.
- Same-connector drive swap — drives with the shared 50-pin connector swap directly; the community record has the third-generation model, this model, and its color-screen sibling sharing that drive-connector family. Check or replace the 632-0259-A ribbon while the unit is open.
- 5mm 50-pin solid-state replacement — one owner documented a 64GB 50-pin SSD dropping in exactly like the original 5mm drive: thin case unaffected, no thick-case parts needed. (That build was on a sibling-family unit; the shared part of the claim is the drive bay and connector geometry.)
- Larger spinning drive — an 80GB drive of the right 50-pin 8mm class is a community recommendation with no first-hand confirmation on this model; treat it as a report, not a guarantee.
Cautions.
- Dual-platter 8mm drives draw noticeably more spin-up current: on a tired battery that sags the rail and loops the boot. Pair any big-drive swap with a healthy pack.
- 60GB was never a factory configuration here — the factory options were 20GB and 40GB; 60GB units in these threads are upgraded devices or the color-screen sibling.
Community signal. Reported by 6 owners.
Sad face, red X, or clicking — diagnose before buying parts
Symptoms. File-with-exclamation boot loop after a drive swap; sad face at power-on; noise as if trying to work, but no response; stuck on the Apple logo and won't enter disk mode; visibly damaged board parts near the connector after a mishap.
Quick diagnosis.
- Built-in diagnostics first: check whether the drive is accessible or erroring before buying any part.
- Bench-test the suspect drive externally on a USB adapter to split drive vs cable vs board.
- Inspect the 632-0259-A cable for tears and bent pins whenever the drive "fails" — cable faults impersonate drive death, and garbled drive-information output in diagnostics points at the cable rather than the drive.
- In the service diagnostics drive-health screen, the pending-sector count — not the reallocated count — is the critical health signal for these drives.
Fixes.
- Drive replacement, flash preferred — when diagnostics implicate the drive, owners steer straight to solid-state at this point; reinstall the software afterward and the sad face is normally gone.
- Whole-board replacement over board-level repair — no public schematics exist for this board, so component-level troubleshooting is guesswork; for genuine board damage a complete replacement board is the economical path, and the model is widely considered worth fixing.
Cautions.
- The sad face usually means the drive, not the board — clear the cheap suspects (cable seating, then drive) before writing off the logic board.
- The community's tap workaround is a symptom of drive-head stiction, a real failure mechanism on these drives after long storage; it is temporary evidence of a dying drive, never advice. Don't strike the device.
- A restore on this model finishes on FireWire power (the wall-outlet handshake) — have the adapter available before drive surgery, or the reinstall will stall.
Community signal. Reported by 5 owners.
Frequently Asked Questions
Use these questions to narrow the part path before ordering. They keep each answer focused on a different diagnostic or fitment decision.
How do I choose the right hard drive capacity?
Match capacity 40GB and color White, drive height, connector/interface, and order number before ordering. Thin and thick storage options can use different physical drives.
Can I use flash storage instead of this hard drive?
Usually yes on models with a supported flash-mod route, but adapter, formatting, and case-clearance checks still matter. Use the flash-mod page when you want solid-state storage instead of another mechanical drive.
When is this drive the right fix for sad iPod, clicking, or restore trouble?
Listen for repeated drive clicking and note whether the iPod reaches disk mode. Reseat the hard-drive ribbon and inspect the storage connector or retaining latch before buying another storage part. Try restore only after cable seating and power behavior are stable enough to complete the process. Compare with a known-good drive, cable, or flash adapter when available. Confirm thin or thick case thickness before ordering battery, hard drive, cable, or rear case parts. Listen for repeat clicking or repeated spin-up attempts before replacing storage parts. Check whether the iPod enters disk mode, restores cleanly, and is recognized by the computer. If a drive or flash adapter was just installed, recheck cable seating, adapter orientation, and formatting before buying another part. Choose this drive only when clicking, sad iPod, restore, or disk-mode symptoms follow the storage path. Choose this storage drive only when clicking, restore failure, or disk errors follow this part or its connection path. Check battery stability, connector seating, and the hard-drive cable before treating the storage device alone as confirmed. Check the storage cable, adapter setup, battery power stability, and board connector when the symptom changes after reseating or swapping storage.
Is this an iPod Classic?
Apple's 'Classic' branding started with the 6th Generation (2007). This is the iPod 4th Generation (Click Wheel), the monochrome-screen model from 2004. Apple's official name for this model is iPod (Click Wheel).
Some buyers search for "frozen iPod"; confirm the checks above point to this same part before ordering.
Why people land on this part
Also searched as: ipod 4th generation monochrome hard drive replacement, ipod 4th generation stuck on apple logo, ipod 4th generation hard drive upgrade, Sad iPod Icon, Folder Icon, Clicking Noise, Red X Icon, iTunes Error, Won't Restore, Corrupted Data, Reboot Loop, Flash Mod Problems, Hard Drive Failure, hard drive dead, clicking sound, showing a folder, 20gb hdd, restore process, gig drive, removed toshiba.
You May Also Want
Users replacing the hard drive often upgrade the battery at the same time.
Related: 128GB Flash Mod Kit (IDE flash adapter + 128GB SD Card Included)Flash storage mod eliminates mechanical failure risk entirely.
Related: Hard Drive IDE Ribbon CableIDE ribbon cable should be inspected during hard drive replacement.
